./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound1.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 45ff7b74faf4250f77b788e07275d725ea3dbcc73af0b2b0d64dcf5aa7f7b78a --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 12:53:54,180 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 12:53:54,182 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 12:53:54,230 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 12:53:54,231 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 12:53:54,248 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 12:53:54,249 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 12:53:54,251 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 12:53:54,252 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 12:53:54,253 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 12:53:54,254 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 12:53:54,254 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 12:53:54,255 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 12:53:54,255 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 12:53:54,256 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 12:53:54,257 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 12:53:54,258 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 12:53:54,259 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 12:53:54,260 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 12:53:54,262 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 12:53:54,267 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 12:53:54,268 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 12:53:54,269 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 12:53:54,269 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 12:53:54,274 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 12:53:54,276 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 12:53:54,276 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 12:53:54,277 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 12:53:54,278 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 12:53:54,278 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 12:53:54,279 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 12:53:54,280 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 12:53:54,281 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 12:53:54,282 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 12:53:54,283 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 12:53:54,284 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 12:53:54,285 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 12:53:54,285 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 12:53:54,286 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 12:53:54,286 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 12:53:54,287 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 12:53:54,288 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 12:53:54,316 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 12:53:54,322 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 12:53:54,323 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 12:53:54,323 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 12:53:54,324 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 12:53:54,324 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 12:53:54,324 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 12:53:54,325 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 12:53:54,325 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 12:53:54,325 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 12:53:54,326 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 12:53:54,326 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 12:53:54,326 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 12:53:54,326 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 12:53:54,326 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 12:53:54,327 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 12:53:54,327 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 12:53:54,327 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 12:53:54,327 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 12:53:54,327 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 12:53:54,327 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 12:53:54,328 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 12:53:54,328 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 12:53:54,328 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 12:53:54,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 12:53:54,328 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 12:53:54,329 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 12:53:54,330 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 12:53:54,330 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 12:53:54,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 12:53:54,330 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 12:53:54,330 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 12:53:54,331 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 12:53:54,331 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 12:53:54,331 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45ff7b74faf4250f77b788e07275d725ea3dbcc73af0b2b0d64dcf5aa7f7b78a [2021-12-17 12:53:54,552 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 12:53:54,582 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 12:53:54,584 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 12:53:54,585 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 12:53:54,585 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 12:53:54,586 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound1.c [2021-12-17 12:53:54,637 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6687c2a99/198c4ddc06f14571a73084ac6b892f01/FLAG41565d4dc [2021-12-17 12:53:55,065 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 12:53:55,065 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound1.c [2021-12-17 12:53:55,070 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6687c2a99/198c4ddc06f14571a73084ac6b892f01/FLAG41565d4dc [2021-12-17 12:53:55,478 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6687c2a99/198c4ddc06f14571a73084ac6b892f01 [2021-12-17 12:53:55,480 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 12:53:55,481 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 12:53:55,483 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 12:53:55,484 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 12:53:55,486 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 12:53:55,487 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 12:53:55" (1/1) ... [2021-12-17 12:53:55,488 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77f81f55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:53:55, skipping insertion in model container [2021-12-17 12:53:55,488 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 12:53:55" (1/1) ... [2021-12-17 12:53:55,494 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 12:53:55,507 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 12:53:55,636 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound1.c[526,539] [2021-12-17 12:53:55,649 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 12:53:55,656 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 12:53:55,670 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound1.c[526,539] [2021-12-17 12:53:55,685 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 12:53:55,696 INFO L208 MainTranslator]: Completed translation [2021-12-17 12:53:55,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:53:55 WrapperNode [2021-12-17 12:53:55,697 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 12:53:55,699 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 12:53:55,700 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 12:53:55,700 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 12:53:55,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:53:55" (1/1) ... [2021-12-17 12:53:55,710 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:53:55" (1/1) ... [2021-12-17 12:53:55,726 INFO L137 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 56 [2021-12-17 12:53:55,726 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 12:53:55,727 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 12:53:55,727 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 12:53:55,727 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 12:53:55,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:53:55" (1/1) ... [2021-12-17 12:53:55,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:53:55" (1/1) ... [2021-12-17 12:53:55,733 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:53:55" (1/1) ... [2021-12-17 12:53:55,734 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:53:55" (1/1) ... [2021-12-17 12:53:55,736 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:53:55" (1/1) ... [2021-12-17 12:53:55,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:53:55" (1/1) ... [2021-12-17 12:53:55,739 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:53:55" (1/1) ... [2021-12-17 12:53:55,741 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 12:53:55,741 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 12:53:55,741 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 12:53:55,742 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 12:53:55,742 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:53:55" (1/1) ... [2021-12-17 12:53:55,755 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 12:53:55,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 12:53:55,778 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) [2021-12-17 12:53:55,780 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 [2021-12-17 12:53:55,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 12:53:55,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 12:53:55,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 12:53:55,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 12:53:55,808 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-17 12:53:55,808 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-17 12:53:55,857 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 12:53:55,859 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 12:53:56,000 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 12:53:56,005 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 12:53:56,007 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-17 12:53:56,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 12:53:56 BoogieIcfgContainer [2021-12-17 12:53:56,009 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 12:53:56,010 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 12:53:56,011 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 12:53:56,014 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 12:53:56,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 12:53:55" (1/3) ... [2021-12-17 12:53:56,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e91b19f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 12:53:56, skipping insertion in model container [2021-12-17 12:53:56,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:53:55" (2/3) ... [2021-12-17 12:53:56,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e91b19f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 12:53:56, skipping insertion in model container [2021-12-17 12:53:56,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 12:53:56" (3/3) ... [2021-12-17 12:53:56,018 INFO L111 eAbstractionObserver]: Analyzing ICFG hard2_valuebound1.c [2021-12-17 12:53:56,022 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 12:53:56,023 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 12:53:56,069 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 12:53:56,076 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 [2021-12-17 12:53:56,076 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 12:53:56,090 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-17 12:53:56,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-17 12:53:56,094 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 12:53:56,094 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 12:53:56,096 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 12:53:56,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 12:53:56,100 INFO L85 PathProgramCache]: Analyzing trace with hash -586848446, now seen corresponding path program 1 times [2021-12-17 12:53:56,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 12:53:56,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075794373] [2021-12-17 12:53:56,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 12:53:56,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 12:53:56,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 12:53:56,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 12:53:56,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 12:53:56,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075794373] [2021-12-17 12:53:56,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075794373] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 12:53:56,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 12:53:56,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 12:53:56,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350149384] [2021-12-17 12:53:56,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 12:53:56,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-17 12:53:56,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 12:53:56,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-17 12:53:56,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 12:53:56,308 INFO L87 Difference]: Start difference. First operand has 26 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 12:53:56,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 12:53:56,332 INFO L93 Difference]: Finished difference Result 49 states and 83 transitions. [2021-12-17 12:53:56,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-17 12:53:56,335 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-17 12:53:56,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 12:53:56,344 INFO L225 Difference]: With dead ends: 49 [2021-12-17 12:53:56,344 INFO L226 Difference]: Without dead ends: 22 [2021-12-17 12:53:56,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 12:53:56,352 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 12:53:56,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 12:53:56,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-12-17 12:53:56,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-12-17 12:53:56,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-17 12:53:56,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2021-12-17 12:53:56,391 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 9 [2021-12-17 12:53:56,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 12:53:56,392 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2021-12-17 12:53:56,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 12:53:56,393 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2021-12-17 12:53:56,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-17 12:53:56,394 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 12:53:56,394 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 12:53:56,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 12:53:56,395 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 12:53:56,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 12:53:56,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1188158916, now seen corresponding path program 1 times [2021-12-17 12:53:56,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 12:53:56,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987765787] [2021-12-17 12:53:56,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 12:53:56,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 12:53:56,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 12:53:56,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 12:53:56,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 12:53:56,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987765787] [2021-12-17 12:53:56,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987765787] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 12:53:56,523 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 12:53:56,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 12:53:56,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522803680] [2021-12-17 12:53:56,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 12:53:56,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 12:53:56,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 12:53:56,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 12:53:56,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 12:53:56,527 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 12:53:56,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 12:53:56,570 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2021-12-17 12:53:56,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 12:53:56,571 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-17 12:53:56,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 12:53:56,573 INFO L225 Difference]: With dead ends: 35 [2021-12-17 12:53:56,573 INFO L226 Difference]: Without dead ends: 33 [2021-12-17 12:53:56,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-17 12:53:56,579 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 12 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 12:53:56,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 98 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 12:53:56,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-12-17 12:53:56,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 26. [2021-12-17 12:53:56,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-17 12:53:56,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2021-12-17 12:53:56,592 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 9 [2021-12-17 12:53:56,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 12:53:56,592 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2021-12-17 12:53:56,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 12:53:56,593 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2021-12-17 12:53:56,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-17 12:53:56,593 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 12:53:56,593 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 12:53:56,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 12:53:56,593 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 12:53:56,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 12:53:56,594 INFO L85 PathProgramCache]: Analyzing trace with hash -697944935, now seen corresponding path program 1 times [2021-12-17 12:53:56,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 12:53:56,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173658705] [2021-12-17 12:53:56,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 12:53:56,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 12:53:56,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 12:53:56,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-17 12:53:56,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 12:53:56,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 12:53:56,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 12:53:56,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173658705] [2021-12-17 12:53:56,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173658705] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 12:53:56,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 12:53:56,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 12:53:56,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179686823] [2021-12-17 12:53:56,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 12:53:56,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 12:53:56,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 12:53:56,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 12:53:56,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 12:53:56,671 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 12:53:56,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 12:53:56,735 INFO L93 Difference]: Finished difference Result 39 states and 50 transitions. [2021-12-17 12:53:56,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 12:53:56,735 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-12-17 12:53:56,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 12:53:56,736 INFO L225 Difference]: With dead ends: 39 [2021-12-17 12:53:56,737 INFO L226 Difference]: Without dead ends: 37 [2021-12-17 12:53:56,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-17 12:53:56,738 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 10 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 12:53:56,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 94 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 12:53:56,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-12-17 12:53:56,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2021-12-17 12:53:56,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-17 12:53:56,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2021-12-17 12:53:56,749 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 14 [2021-12-17 12:53:56,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 12:53:56,749 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2021-12-17 12:53:56,749 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), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 12:53:56,749 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2021-12-17 12:53:56,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-17 12:53:56,750 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 12:53:56,750 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 12:53:56,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 12:53:56,751 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 12:53:56,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 12:53:56,751 INFO L85 PathProgramCache]: Analyzing trace with hash 262992548, now seen corresponding path program 1 times [2021-12-17 12:53:56,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 12:53:56,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918703563] [2021-12-17 12:53:56,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 12:53:56,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 12:53:56,763 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 12:53:56,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [340337055] [2021-12-17 12:53:56,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 12:53:56,765 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 12:53:56,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 12:53:56,775 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) [2021-12-17 12:53:56,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-17 12:53:56,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 12:53:56,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-17 12:53:56,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 12:53:56,977 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-17 12:53:56,977 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 12:53:56,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 12:53:56,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918703563] [2021-12-17 12:53:56,978 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 12:53:56,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340337055] [2021-12-17 12:53:56,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340337055] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 12:53:56,979 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 12:53:56,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 12:53:56,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113262415] [2021-12-17 12:53:56,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 12:53:56,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 12:53:56,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 12:53:56,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 12:53:56,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 12:53:56,981 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-17 12:53:57,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 12:53:57,034 INFO L93 Difference]: Finished difference Result 58 states and 76 transitions. [2021-12-17 12:53:57,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 12:53:57,035 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2021-12-17 12:53:57,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 12:53:57,036 INFO L225 Difference]: With dead ends: 58 [2021-12-17 12:53:57,036 INFO L226 Difference]: Without dead ends: 44 [2021-12-17 12:53:57,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-17 12:53:57,037 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 8 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 12:53:57,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 106 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 12:53:57,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-12-17 12:53:57,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-12-17 12:53:57,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 28 states have internal predecessors, (31), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-17 12:53:57,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 55 transitions. [2021-12-17 12:53:57,046 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 55 transitions. Word has length 19 [2021-12-17 12:53:57,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 12:53:57,046 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 55 transitions. [2021-12-17 12:53:57,047 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), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-17 12:53:57,047 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 55 transitions. [2021-12-17 12:53:57,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-17 12:53:57,047 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 12:53:57,048 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 12:53:57,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-17 12:53:57,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 12:53:57,271 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 12:53:57,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 12:53:57,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1807142342, now seen corresponding path program 1 times [2021-12-17 12:53:57,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 12:53:57,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705474920] [2021-12-17 12:53:57,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 12:53:57,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 12:53:57,281 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 12:53:57,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [174270943] [2021-12-17 12:53:57,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 12:53:57,282 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 12:53:57,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 12:53:57,284 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) [2021-12-17 12:53:57,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-17 12:53:57,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 12:53:57,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-17 12:53:57,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 12:53:57,432 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-17 12:53:57,432 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 12:53:57,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 12:53:57,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705474920] [2021-12-17 12:53:57,433 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 12:53:57,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174270943] [2021-12-17 12:53:57,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174270943] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 12:53:57,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 12:53:57,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 12:53:57,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309321501] [2021-12-17 12:53:57,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 12:53:57,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 12:53:57,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 12:53:57,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 12:53:57,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 12:53:57,435 INFO L87 Difference]: Start difference. First operand 44 states and 55 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-17 12:53:57,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 12:53:57,489 INFO L93 Difference]: Finished difference Result 57 states and 72 transitions. [2021-12-17 12:53:57,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 12:53:57,490 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 26 [2021-12-17 12:53:57,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 12:53:57,491 INFO L225 Difference]: With dead ends: 57 [2021-12-17 12:53:57,491 INFO L226 Difference]: Without dead ends: 50 [2021-12-17 12:53:57,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-17 12:53:57,492 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 9 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 12:53:57,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 80 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 12:53:57,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-12-17 12:53:57,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2021-12-17 12:53:57,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 30 states have (on average 1.2) internal successors, (36), 32 states have internal predecessors, (36), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2021-12-17 12:53:57,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 61 transitions. [2021-12-17 12:53:57,513 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 61 transitions. Word has length 26 [2021-12-17 12:53:57,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 12:53:57,514 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 61 transitions. [2021-12-17 12:53:57,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-17 12:53:57,514 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 61 transitions. [2021-12-17 12:53:57,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-17 12:53:57,515 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 12:53:57,515 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 12:53:57,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-17 12:53:57,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 12:53:57,736 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 12:53:57,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 12:53:57,736 INFO L85 PathProgramCache]: Analyzing trace with hash -979933353, now seen corresponding path program 1 times [2021-12-17 12:53:57,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 12:53:57,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565434082] [2021-12-17 12:53:57,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 12:53:57,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 12:53:57,751 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 12:53:57,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [359881575] [2021-12-17 12:53:57,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 12:53:57,752 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 12:53:57,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 12:53:57,753 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) [2021-12-17 12:53:57,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-17 12:53:57,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 12:53:57,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-17 12:53:57,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 12:53:57,948 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-17 12:53:57,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 12:53:58,046 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-12-17 12:53:58,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 12:53:58,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565434082] [2021-12-17 12:53:58,047 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 12:53:58,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359881575] [2021-12-17 12:53:58,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359881575] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-17 12:53:58,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 12:53:58,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2021-12-17 12:53:58,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165727405] [2021-12-17 12:53:58,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 12:53:58,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 12:53:58,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 12:53:58,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 12:53:58,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-17 12:53:58,050 INFO L87 Difference]: Start difference. First operand 49 states and 61 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-17 12:53:58,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 12:53:58,094 INFO L93 Difference]: Finished difference Result 61 states and 76 transitions. [2021-12-17 12:53:58,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 12:53:58,095 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2021-12-17 12:53:58,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 12:53:58,097 INFO L225 Difference]: With dead ends: 61 [2021-12-17 12:53:58,097 INFO L226 Difference]: Without dead ends: 59 [2021-12-17 12:53:58,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-17 12:53:58,099 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 8 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 12:53:58,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 90 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 12:53:58,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-12-17 12:53:58,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2021-12-17 12:53:58,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 37 states have internal predecessors, (40), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2021-12-17 12:53:58,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2021-12-17 12:53:58,108 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 36 [2021-12-17 12:53:58,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 12:53:58,109 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2021-12-17 12:53:58,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-17 12:53:58,109 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2021-12-17 12:53:58,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-17 12:53:58,110 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 12:53:58,111 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 12:53:58,134 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-17 12:53:58,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 12:53:58,326 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 12:53:58,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 12:53:58,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1034157389, now seen corresponding path program 1 times [2021-12-17 12:53:58,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 12:53:58,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952057026] [2021-12-17 12:53:58,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 12:53:58,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 12:53:58,335 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 12:53:58,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1377015573] [2021-12-17 12:53:58,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 12:53:58,335 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 12:53:58,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 12:53:58,336 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) [2021-12-17 12:53:58,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-17 12:53:58,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 12:53:58,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-17 12:53:58,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 12:53:58,725 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-17 12:53:58,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 12:53:59,589 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-17 12:53:59,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 12:53:59,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952057026] [2021-12-17 12:53:59,590 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 12:53:59,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377015573] [2021-12-17 12:53:59,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377015573] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 12:53:59,590 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 12:53:59,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-12-17 12:53:59,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507688060] [2021-12-17 12:53:59,591 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 12:53:59,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 12:53:59,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 12:53:59,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 12:53:59,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-12-17 12:53:59,594 INFO L87 Difference]: Start difference. First operand 56 states and 69 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 6 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2021-12-17 12:54:05,143 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-12-17 12:54:06,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 12:54:06,145 INFO L93 Difference]: Finished difference Result 146 states and 202 transitions. [2021-12-17 12:54:06,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 12:54:06,146 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 6 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 56 [2021-12-17 12:54:06,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 12:54:06,148 INFO L225 Difference]: With dead ends: 146 [2021-12-17 12:54:06,148 INFO L226 Difference]: Without dead ends: 117 [2021-12-17 12:54:06,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 100 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-12-17 12:54:06,149 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 34 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-12-17 12:54:06,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 234 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-12-17 12:54:06,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-12-17 12:54:06,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 105. [2021-12-17 12:54:06,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 64 states have (on average 1.234375) internal successors, (79), 68 states have internal predecessors, (79), 30 states have call successors, (30), 10 states have call predecessors, (30), 10 states have return successors, (29), 26 states have call predecessors, (29), 29 states have call successors, (29) [2021-12-17 12:54:06,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 138 transitions. [2021-12-17 12:54:06,184 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 138 transitions. Word has length 56 [2021-12-17 12:54:06,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 12:54:06,185 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 138 transitions. [2021-12-17 12:54:06,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 6 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2021-12-17 12:54:06,185 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 138 transitions. [2021-12-17 12:54:06,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-17 12:54:06,191 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 12:54:06,192 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 12:54:06,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-17 12:54:06,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 12:54:06,415 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 12:54:06,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 12:54:06,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1199454569, now seen corresponding path program 1 times [2021-12-17 12:54:06,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 12:54:06,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348275248] [2021-12-17 12:54:06,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 12:54:06,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 12:54:06,427 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 12:54:06,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1887913111] [2021-12-17 12:54:06,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 12:54:06,427 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 12:54:06,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 12:54:06,429 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) [2021-12-17 12:54:06,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-17 12:54:06,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 12:54:06,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 37 conjunts are in the unsatisfiable core [2021-12-17 12:54:06,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 12:54:06,843 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 66 proven. 11 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2021-12-17 12:54:06,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 12:54:07,081 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 68 proven. 2 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2021-12-17 12:54:07,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 12:54:07,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348275248] [2021-12-17 12:54:07,082 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 12:54:07,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887913111] [2021-12-17 12:54:07,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887913111] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 12:54:07,082 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 12:54:07,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 15 [2021-12-17 12:54:07,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666464890] [2021-12-17 12:54:07,083 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 12:54:07,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-17 12:54:07,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 12:54:07,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-17 12:54:07,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-12-17 12:54:07,086 INFO L87 Difference]: Start difference. First operand 105 states and 138 transitions. Second operand has 15 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 7 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 7 states have call predecessors, (17), 5 states have call successors, (17) [2021-12-17 12:54:07,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 12:54:07,413 INFO L93 Difference]: Finished difference Result 161 states and 211 transitions. [2021-12-17 12:54:07,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-17 12:54:07,413 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 7 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 7 states have call predecessors, (17), 5 states have call successors, (17) Word has length 67 [2021-12-17 12:54:07,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 12:54:07,415 INFO L225 Difference]: With dead ends: 161 [2021-12-17 12:54:07,415 INFO L226 Difference]: Without dead ends: 107 [2021-12-17 12:54:07,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 114 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2021-12-17 12:54:07,416 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 30 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 12:54:07,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 141 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 12:54:07,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-12-17 12:54:07,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 93. [2021-12-17 12:54:07,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 58 states have (on average 1.1724137931034482) internal successors, (68), 61 states have internal predecessors, (68), 23 states have call successors, (23), 11 states have call predecessors, (23), 11 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-17 12:54:07,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 113 transitions. [2021-12-17 12:54:07,429 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 113 transitions. Word has length 67 [2021-12-17 12:54:07,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 12:54:07,429 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 113 transitions. [2021-12-17 12:54:07,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 7 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 7 states have call predecessors, (17), 5 states have call successors, (17) [2021-12-17 12:54:07,430 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 113 transitions. [2021-12-17 12:54:07,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-17 12:54:07,430 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 12:54:07,430 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 12:54:07,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-17 12:54:07,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 12:54:07,656 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 12:54:07,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 12:54:07,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1842513023, now seen corresponding path program 1 times [2021-12-17 12:54:07,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 12:54:07,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309554956] [2021-12-17 12:54:07,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 12:54:07,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 12:54:07,665 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 12:54:07,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1279141523] [2021-12-17 12:54:07,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 12:54:07,666 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 12:54:07,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 12:54:07,667 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) [2021-12-17 12:54:07,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-17 12:54:07,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 12:54:07,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-17 12:54:07,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 12:54:07,907 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-12-17 12:54:07,907 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 12:54:07,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 12:54:07,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309554956] [2021-12-17 12:54:07,908 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 12:54:07,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279141523] [2021-12-17 12:54:07,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279141523] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 12:54:07,908 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 12:54:07,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 12:54:07,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385844330] [2021-12-17 12:54:07,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 12:54:07,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 12:54:07,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 12:54:07,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 12:54:07,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-17 12:54:07,910 INFO L87 Difference]: Start difference. First operand 93 states and 113 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2021-12-17 12:54:07,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 12:54:07,957 INFO L93 Difference]: Finished difference Result 107 states and 128 transitions. [2021-12-17 12:54:07,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 12:54:07,958 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 76 [2021-12-17 12:54:07,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 12:54:07,959 INFO L225 Difference]: With dead ends: 107 [2021-12-17 12:54:07,959 INFO L226 Difference]: Without dead ends: 95 [2021-12-17 12:54:07,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-17 12:54:07,960 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 14 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 12:54:07,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 70 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 12:54:07,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-12-17 12:54:07,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2021-12-17 12:54:07,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 60 states have (on average 1.15) internal successors, (69), 61 states have internal predecessors, (69), 23 states have call successors, (23), 11 states have call predecessors, (23), 11 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-17 12:54:07,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 114 transitions. [2021-12-17 12:54:07,971 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 114 transitions. Word has length 76 [2021-12-17 12:54:07,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 12:54:07,971 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 114 transitions. [2021-12-17 12:54:07,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2021-12-17 12:54:07,971 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 114 transitions. [2021-12-17 12:54:07,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-12-17 12:54:07,972 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 12:54:07,973 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 12:54:07,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-17 12:54:08,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 12:54:08,184 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 12:54:08,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 12:54:08,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1412721000, now seen corresponding path program 1 times [2021-12-17 12:54:08,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 12:54:08,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773591281] [2021-12-17 12:54:08,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 12:54:08,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 12:54:08,198 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 12:54:08,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1241634866] [2021-12-17 12:54:08,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 12:54:08,199 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 12:54:08,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 12:54:08,200 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) [2021-12-17 12:54:08,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-17 12:54:08,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 12:54:08,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-17 12:54:08,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 12:54:08,493 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2021-12-17 12:54:08,493 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 12:54:08,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 12:54:08,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773591281] [2021-12-17 12:54:08,494 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 12:54:08,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241634866] [2021-12-17 12:54:08,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241634866] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 12:54:08,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 12:54:08,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 12:54:08,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089251557] [2021-12-17 12:54:08,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 12:54:08,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 12:54:08,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 12:54:08,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 12:54:08,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-17 12:54:08,496 INFO L87 Difference]: Start difference. First operand 95 states and 114 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-17 12:54:08,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 12:54:08,561 INFO L93 Difference]: Finished difference Result 131 states and 159 transitions. [2021-12-17 12:54:08,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 12:54:08,561 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 86 [2021-12-17 12:54:08,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 12:54:08,563 INFO L225 Difference]: With dead ends: 131 [2021-12-17 12:54:08,563 INFO L226 Difference]: Without dead ends: 97 [2021-12-17 12:54:08,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-17 12:54:08,564 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 7 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 12:54:08,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 127 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 12:54:08,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-12-17 12:54:08,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 86. [2021-12-17 12:54:08,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 55 states have (on average 1.1090909090909091) internal successors, (61), 56 states have internal predecessors, (61), 19 states have call successors, (19), 11 states have call predecessors, (19), 11 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-12-17 12:54:08,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 98 transitions. [2021-12-17 12:54:08,580 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 98 transitions. Word has length 86 [2021-12-17 12:54:08,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 12:54:08,581 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 98 transitions. [2021-12-17 12:54:08,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-17 12:54:08,581 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 98 transitions. [2021-12-17 12:54:08,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-12-17 12:54:08,582 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 12:54:08,582 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 12:54:08,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-17 12:54:08,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 12:54:08,800 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 12:54:08,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 12:54:08,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1193302554, now seen corresponding path program 2 times [2021-12-17 12:54:08,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 12:54:08,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825115797] [2021-12-17 12:54:08,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 12:54:08,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 12:54:08,808 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 12:54:08,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [609456128] [2021-12-17 12:54:08,808 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-17 12:54:08,808 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 12:54:08,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 12:54:08,809 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) [2021-12-17 12:54:08,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-17 12:54:08,855 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-17 12:54:08,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 12:54:08,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-17 12:54:08,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 12:54:09,036 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2021-12-17 12:54:09,037 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 12:54:09,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 12:54:09,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825115797] [2021-12-17 12:54:09,037 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 12:54:09,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609456128] [2021-12-17 12:54:09,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609456128] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 12:54:09,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 12:54:09,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 12:54:09,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597395510] [2021-12-17 12:54:09,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 12:54:09,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 12:54:09,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 12:54:09,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 12:54:09,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-17 12:54:09,040 INFO L87 Difference]: Start difference. First operand 86 states and 98 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-17 12:54:09,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 12:54:09,112 INFO L93 Difference]: Finished difference Result 86 states and 98 transitions. [2021-12-17 12:54:09,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 12:54:09,113 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 86 [2021-12-17 12:54:09,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 12:54:09,113 INFO L225 Difference]: With dead ends: 86 [2021-12-17 12:54:09,113 INFO L226 Difference]: Without dead ends: 0 [2021-12-17 12:54:09,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-17 12:54:09,114 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 5 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 12:54:09,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 60 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 12:54:09,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-17 12:54:09,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-17 12:54:09,115 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) [2021-12-17 12:54:09,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-17 12:54:09,115 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 86 [2021-12-17 12:54:09,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 12:54:09,115 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-17 12:54:09,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-17 12:54:09,116 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-17 12:54:09,116 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-17 12:54:09,117 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-17 12:54:09,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-17 12:54:09,319 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,SelfDestructingSolverStorable10 [2021-12-17 12:54:09,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-17 12:54:09,759 INFO L861 garLoopResultBuilder]: At program point L60(lines 22 61) the Hoare annotation is: true [2021-12-17 12:54:09,759 INFO L858 garLoopResultBuilder]: For program point L52(lines 52 55) no Hoare annotation was computed. [2021-12-17 12:54:09,759 INFO L858 garLoopResultBuilder]: For program point L52-2(lines 22 61) no Hoare annotation was computed. [2021-12-17 12:54:09,759 INFO L858 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2021-12-17 12:54:09,759 INFO L854 garLoopResultBuilder]: At program point L44-1(lines 44 56) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse1 (= |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~B~0#1|)) (.cse2 (= |ULTIMATE.start_main_~B~0#1| 1))) (or (and .cse0 (= |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~p~0#1|) .cse1 .cse2 (= (+ |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~d~0#1|) |ULTIMATE.start_main_~A~0#1|)) (and .cse0 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~A~0#1|) .cse1 (= |ULTIMATE.start_main_~q~0#1| 0) .cse2))) [2021-12-17 12:54:09,759 INFO L854 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~A~0#1|)) (.cse1 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse2 (= |ULTIMATE.start_main_~B~0#1| 1)) (.cse3 (<= 0 |ULTIMATE.start_main_~A~0#1|)) (.cse4 (<= |ULTIMATE.start_main_~A~0#1| 1)) (.cse5 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1))) (or (and .cse0 (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~B~0#1|) .cse1 .cse2 .cse3 .cse4 .cse5) (and (= |ULTIMATE.start_main_~p~0#1| 2) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (= |ULTIMATE.start_main_~d~0#1| (* 2 |ULTIMATE.start_main_~B~0#1|))))) [2021-12-17 12:54:09,759 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-17 12:54:09,759 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-17 12:54:09,759 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-17 12:54:09,760 INFO L854 garLoopResultBuilder]: At program point L45(line 45) the Hoare annotation is: (let ((.cse1 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~A~0#1|)) (.cse2 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse0 (= |ULTIMATE.start_main_~B~0#1| 1))) (or (and (= |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~p~0#1|) (= (+ |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~d~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~B~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~B~0#1|))) .cse0 (= (+ |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~B~0#1|) |ULTIMATE.start_main_~A~0#1|) (= (+ |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~d~0#1|) |ULTIMATE.start_main_~A~0#1|)) (and (= |ULTIMATE.start_main_~p~0#1| 2) .cse1 .cse2 .cse0 (= |ULTIMATE.start_main_~d~0#1| (* 2 |ULTIMATE.start_main_~B~0#1|))) (and .cse1 (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~B~0#1|) .cse2 .cse0))) [2021-12-17 12:54:09,760 INFO L858 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2021-12-17 12:54:09,760 INFO L854 garLoopResultBuilder]: At program point L45-1(line 45) the Hoare annotation is: (let ((.cse1 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~A~0#1|)) (.cse2 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse0 (= |ULTIMATE.start_main_~B~0#1| 1))) (or (and (= |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~p~0#1|) (= (+ |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~d~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~B~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~B~0#1|))) .cse0 (= (+ |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~B~0#1|) |ULTIMATE.start_main_~A~0#1|) (= (+ |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~d~0#1|) |ULTIMATE.start_main_~A~0#1|)) (and (= |ULTIMATE.start_main_~p~0#1| 2) .cse1 .cse2 .cse0 (= |ULTIMATE.start_main_~d~0#1| (* 2 |ULTIMATE.start_main_~B~0#1|))) (and .cse1 (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~B~0#1|) .cse2 .cse0))) [2021-12-17 12:54:09,760 INFO L858 garLoopResultBuilder]: For program point L37(lines 34 42) no Hoare annotation was computed. [2021-12-17 12:54:09,760 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-17 12:54:09,760 INFO L854 garLoopResultBuilder]: At program point L58(line 58) the Hoare annotation is: (and (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~B~0#1|) (= |ULTIMATE.start_main_~B~0#1| 1)) [2021-12-17 12:54:09,760 INFO L858 garLoopResultBuilder]: For program point L46(lines 44 56) no Hoare annotation was computed. [2021-12-17 12:54:09,760 INFO L854 garLoopResultBuilder]: At program point L34-2(lines 34 42) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~A~0#1|)) (.cse1 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse2 (= |ULTIMATE.start_main_~B~0#1| 1)) (.cse3 (<= 0 |ULTIMATE.start_main_~A~0#1|)) (.cse4 (<= |ULTIMATE.start_main_~A~0#1| 1)) (.cse5 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1))) (or (and .cse0 (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~B~0#1|) .cse1 .cse2 .cse3 .cse4 .cse5) (and (= |ULTIMATE.start_main_~p~0#1| 2) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (= |ULTIMATE.start_main_~d~0#1| (* 2 |ULTIMATE.start_main_~B~0#1|))))) [2021-12-17 12:54:09,760 INFO L858 garLoopResultBuilder]: For program point L59(line 59) no Hoare annotation was computed. [2021-12-17 12:54:09,760 INFO L854 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~A~0#1|)) (.cse1 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse2 (= |ULTIMATE.start_main_~B~0#1| 1)) (.cse3 (<= 0 |ULTIMATE.start_main_~A~0#1|)) (.cse4 (<= |ULTIMATE.start_main_~A~0#1| 1)) (.cse5 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1))) (or (and .cse0 (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~B~0#1|) .cse1 .cse2 .cse3 .cse4 .cse5) (and (= |ULTIMATE.start_main_~p~0#1| 2) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (= |ULTIMATE.start_main_~d~0#1| (* 2 |ULTIMATE.start_main_~B~0#1|))))) [2021-12-17 12:54:09,761 INFO L854 garLoopResultBuilder]: At program point L35-1(line 35) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~A~0#1|)) (.cse1 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse2 (= |ULTIMATE.start_main_~B~0#1| 1)) (.cse3 (<= 0 |ULTIMATE.start_main_~A~0#1|)) (.cse4 (<= |ULTIMATE.start_main_~A~0#1| 1)) (.cse5 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1))) (or (and .cse0 (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~B~0#1|) .cse1 .cse2 .cse3 .cse4 .cse5) (and (= |ULTIMATE.start_main_~p~0#1| 2) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (= |ULTIMATE.start_main_~d~0#1| (* 2 |ULTIMATE.start_main_~B~0#1|))))) [2021-12-17 12:54:09,761 INFO L858 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-12-17 12:54:09,761 INFO L858 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-12-17 12:54:09,761 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true [2021-12-17 12:54:09,761 INFO L858 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2021-12-17 12:54:09,761 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2021-12-17 12:54:09,761 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-12-17 12:54:09,764 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 12:54:09,764 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-17 12:54:09,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 12:54:09 BoogieIcfgContainer [2021-12-17 12:54:09,775 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-17 12:54:09,776 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-17 12:54:09,776 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-17 12:54:09,776 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-17 12:54:09,776 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 12:53:56" (3/4) ... [2021-12-17 12:54:09,778 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-17 12:54:09,783 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-12-17 12:54:09,786 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-12-17 12:54:09,786 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-17 12:54:09,786 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-17 12:54:09,786 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-17 12:54:09,815 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-17 12:54:09,815 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-17 12:54:09,816 INFO L158 Benchmark]: Toolchain (without parser) took 14334.65ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 80.9MB in the beginning and 36.1MB in the end (delta: 44.9MB). Peak memory consumption was 67.7MB. Max. memory is 16.1GB. [2021-12-17 12:54:09,816 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 81.8MB. Free memory was 38.8MB in the beginning and 38.8MB in the end (delta: 46.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 12:54:09,817 INFO L158 Benchmark]: CACSL2BoogieTranslator took 213.46ms. Allocated memory is still 109.1MB. Free memory was 80.9MB in the beginning and 85.6MB in the end (delta: -4.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-17 12:54:09,817 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.08ms. Allocated memory is still 109.1MB. Free memory was 85.6MB in the beginning and 84.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 12:54:09,817 INFO L158 Benchmark]: Boogie Preprocessor took 13.59ms. Allocated memory is still 109.1MB. Free memory was 84.4MB in the beginning and 83.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 12:54:09,818 INFO L158 Benchmark]: RCFGBuilder took 267.40ms. Allocated memory is still 109.1MB. Free memory was 83.0MB in the beginning and 73.5MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-17 12:54:09,818 INFO L158 Benchmark]: TraceAbstraction took 13765.31ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 73.0MB in the beginning and 39.2MB in the end (delta: 33.8MB). Peak memory consumption was 60.0MB. Max. memory is 16.1GB. [2021-12-17 12:54:09,818 INFO L158 Benchmark]: Witness Printer took 39.90ms. Allocated memory is still 132.1MB. Free memory was 39.2MB in the beginning and 36.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 12:54:09,820 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 81.8MB. Free memory was 38.8MB in the beginning and 38.8MB in the end (delta: 46.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 213.46ms. Allocated memory is still 109.1MB. Free memory was 80.9MB in the beginning and 85.6MB in the end (delta: -4.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.08ms. Allocated memory is still 109.1MB. Free memory was 85.6MB in the beginning and 84.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 13.59ms. Allocated memory is still 109.1MB. Free memory was 84.4MB in the beginning and 83.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 267.40ms. Allocated memory is still 109.1MB. Free memory was 83.0MB in the beginning and 73.5MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 13765.31ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 73.0MB in the beginning and 39.2MB in the end (delta: 33.8MB). Peak memory consumption was 60.0MB. Max. memory is 16.1GB. * Witness Printer took 39.90ms. Allocated memory is still 132.1MB. Free memory was 39.2MB in the beginning and 36.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 13.7s, OverallIterations: 11, TraceHistogramMax: 14, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 7.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 187 SdHoareTripleChecker+Valid, 3.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 137 mSDsluCounter, 1134 SdHoareTripleChecker+Invalid, 3.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 786 mSDsCounter, 150 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 792 IncrementalHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 150 mSolverCounterUnsat, 348 mSDtfsCounter, 792 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 629 GetRequests, 556 SyntacticMatches, 9 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=105occurred in iteration=7, InterpolantAutomatonStates: 68, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 55 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 82 PreInvPairs, 105 NumberOfFragments, 387 HoareAnnotationTreeSize, 82 FomulaSimplifications, 56 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 253 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 484 NumberOfCodeBlocks, 484 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 629 ConstructedInterpolants, 0 QuantifiedInterpolants, 3225 SizeOfPredicates, 18 NumberOfNonLiveVariables, 1142 ConjunctsInSsa, 115 ConjunctsInUnsatCore, 14 InterpolantComputations, 9 PerfectInterpolantSequences, 1820/1851 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (((((((r == A && p == 1) && d == B) && q == 0) && B == 1) && 0 <= A) && A <= 1) && cond == 1) || (((((((p == 2 && r == A) && q == 0) && B == 1) && 0 <= A) && A <= 1) && cond == 1) && d == 2 * B) RESULT: Ultimate proved your program to be correct! [2021-12-17 12:54:09,851 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