./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound5.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/cohendiv-ll_valuebound5.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 fc77cb5fe4af5100e01bafbf150d5df54332b351a9f9d4040d6b54bbf20f5710 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 00:15:36,406 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 00:15:36,415 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 00:15:36,463 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 00:15:36,464 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 00:15:36,466 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 00:15:36,467 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 00:15:36,469 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 00:15:36,470 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 00:15:36,473 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 00:15:36,474 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 00:15:36,475 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 00:15:36,475 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 00:15:36,477 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 00:15:36,478 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 00:15:36,480 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 00:15:36,481 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 00:15:36,481 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 00:15:36,483 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 00:15:36,487 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 00:15:36,488 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 00:15:36,488 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 00:15:36,490 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 00:15:36,490 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 00:15:36,494 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 00:15:36,495 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 00:15:36,495 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 00:15:36,496 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 00:15:36,496 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 00:15:36,497 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 00:15:36,497 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 00:15:36,497 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 00:15:36,498 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 00:15:36,499 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 00:15:36,500 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 00:15:36,500 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 00:15:36,500 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 00:15:36,501 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 00:15:36,501 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 00:15:36,502 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 00:15:36,502 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 00:15:36,504 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 00:15:36,525 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 00:15:36,526 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 00:15:36,526 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 00:15:36,526 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 00:15:36,527 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 00:15:36,527 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 00:15:36,527 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 00:15:36,527 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 00:15:36,528 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 00:15:36,528 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 00:15:36,528 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 00:15:36,529 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 00:15:36,529 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 00:15:36,529 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 00:15:36,529 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 00:15:36,529 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 00:15:36,529 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 00:15:36,529 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 00:15:36,529 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 00:15:36,530 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 00:15:36,530 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 00:15:36,530 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 00:15:36,530 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 00:15:36,530 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 00:15:36,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 00:15:36,530 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 00:15:36,531 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 00:15:36,531 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 00:15:36,532 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 00:15:36,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 00:15:36,532 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 00:15:36,532 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 00:15:36,532 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 00:15:36,532 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 00:15:36,532 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fc77cb5fe4af5100e01bafbf150d5df54332b351a9f9d4040d6b54bbf20f5710 [2021-12-16 00:15:36,714 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 00:15:36,734 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 00:15:36,736 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 00:15:36,737 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 00:15:36,738 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 00:15:36,739 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound5.c [2021-12-16 00:15:36,787 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0be95395a/24e2f8cc3d5044d28abb683a12d8d0d4/FLAGdc55c2875 [2021-12-16 00:15:37,152 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 00:15:37,152 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound5.c [2021-12-16 00:15:37,156 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0be95395a/24e2f8cc3d5044d28abb683a12d8d0d4/FLAGdc55c2875 [2021-12-16 00:15:37,164 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0be95395a/24e2f8cc3d5044d28abb683a12d8d0d4 [2021-12-16 00:15:37,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 00:15:37,167 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 00:15:37,169 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 00:15:37,169 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 00:15:37,171 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 00:15:37,171 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:15:37" (1/1) ... [2021-12-16 00:15:37,172 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@332f0dea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:15:37, skipping insertion in model container [2021-12-16 00:15:37,172 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:15:37" (1/1) ... [2021-12-16 00:15:37,176 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 00:15:37,184 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 00:15:37,288 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/cohendiv-ll_valuebound5.c[576,589] [2021-12-16 00:15:37,299 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 00:15:37,304 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 00:15:37,317 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/cohendiv-ll_valuebound5.c[576,589] [2021-12-16 00:15:37,334 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 00:15:37,347 INFO L208 MainTranslator]: Completed translation [2021-12-16 00:15:37,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:15:37 WrapperNode [2021-12-16 00:15:37,348 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 00:15:37,348 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 00:15:37,348 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 00:15:37,349 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 00:15:37,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:15:37" (1/1) ... [2021-12-16 00:15:37,359 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:15:37" (1/1) ... [2021-12-16 00:15:37,371 INFO L137 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2021-12-16 00:15:37,371 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 00:15:37,372 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 00:15:37,372 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 00:15:37,372 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 00:15:37,377 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:15:37" (1/1) ... [2021-12-16 00:15:37,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:15:37" (1/1) ... [2021-12-16 00:15:37,385 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:15:37" (1/1) ... [2021-12-16 00:15:37,386 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:15:37" (1/1) ... [2021-12-16 00:15:37,387 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:15:37" (1/1) ... [2021-12-16 00:15:37,390 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:15:37" (1/1) ... [2021-12-16 00:15:37,390 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:15:37" (1/1) ... [2021-12-16 00:15:37,391 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 00:15:37,392 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 00:15:37,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 00:15:37,392 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 00:15:37,395 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:15:37" (1/1) ... [2021-12-16 00:15:37,400 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 00:15:37,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:15:37,417 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) [2021-12-16 00:15:37,423 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 [2021-12-16 00:15:37,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 00:15:37,442 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-16 00:15:37,442 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-16 00:15:37,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 00:15:37,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 00:15:37,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 00:15:37,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-16 00:15:37,443 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-16 00:15:37,483 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 00:15:37,484 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 00:15:37,563 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 00:15:37,567 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 00:15:37,572 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-16 00:15:37,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:15:37 BoogieIcfgContainer [2021-12-16 00:15:37,573 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 00:15:37,574 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 00:15:37,574 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 00:15:37,576 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 00:15:37,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 12:15:37" (1/3) ... [2021-12-16 00:15:37,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2987fdf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:15:37, skipping insertion in model container [2021-12-16 00:15:37,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:15:37" (2/3) ... [2021-12-16 00:15:37,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2987fdf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:15:37, skipping insertion in model container [2021-12-16 00:15:37,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:15:37" (3/3) ... [2021-12-16 00:15:37,578 INFO L111 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_valuebound5.c [2021-12-16 00:15:37,581 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 00:15:37,581 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 00:15:37,613 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 00:15:37,621 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 [2021-12-16 00:15:37,623 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 00:15:37,633 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 20 states have (on average 1.45) internal successors, (29), 21 states have internal predecessors, (29), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-16 00:15:37,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-16 00:15:37,641 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:15:37,642 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:15:37,642 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:15:37,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:15:37,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1418986431, now seen corresponding path program 1 times [2021-12-16 00:15:37,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:15:37,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806814787] [2021-12-16 00:15:37,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:15:37,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:15:37,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:15:37,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 00:15:37,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:15:37,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 00:15:37,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:15:37,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 00:15:37,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:15:37,777 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-16 00:15:37,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:15:37,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806814787] [2021-12-16 00:15:37,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806814787] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:15:37,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:15:37,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 00:15:37,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050881575] [2021-12-16 00:15:37,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:15:37,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-16 00:15:37,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:15:37,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-16 00:15:37,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-16 00:15:37,810 INFO L87 Difference]: Start difference. First operand has 34 states, 20 states have (on average 1.45) internal successors, (29), 21 states have internal predecessors, (29), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-16 00:15:37,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:15:37,823 INFO L93 Difference]: Finished difference Result 65 states and 104 transitions. [2021-12-16 00:15:37,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-16 00:15:37,825 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2021-12-16 00:15:37,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:15:37,834 INFO L225 Difference]: With dead ends: 65 [2021-12-16 00:15:37,847 INFO L226 Difference]: Without dead ends: 30 [2021-12-16 00:15:37,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-16 00:15:37,852 INFO L933 BasicCegarLoop]: 43 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, 43 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 [2021-12-16 00:15:37,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 00:15:37,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-12-16 00:15:37,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-12-16 00:15:37,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-12-16 00:15:37,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2021-12-16 00:15:37,889 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 39 transitions. Word has length 24 [2021-12-16 00:15:37,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:15:37,890 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 39 transitions. [2021-12-16 00:15:37,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-16 00:15:37,890 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2021-12-16 00:15:37,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-16 00:15:37,891 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:15:37,891 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:15:37,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 00:15:37,892 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:15:37,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:15:37,892 INFO L85 PathProgramCache]: Analyzing trace with hash 240368937, now seen corresponding path program 1 times [2021-12-16 00:15:37,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:15:37,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919368261] [2021-12-16 00:15:37,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:15:37,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:15:37,912 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 00:15:37,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [914918324] [2021-12-16 00:15:37,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:15:37,913 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:15:37,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:15:37,918 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) [2021-12-16 00:15:37,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-16 00:15:37,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:15:37,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-16 00:15:37,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 00:15:38,131 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-16 00:15:38,132 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 00:15:38,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:15:38,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919368261] [2021-12-16 00:15:38,132 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 00:15:38,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914918324] [2021-12-16 00:15:38,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914918324] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:15:38,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:15:38,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 00:15:38,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852206801] [2021-12-16 00:15:38,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:15:38,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 00:15:38,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:15:38,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 00:15:38,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-16 00:15:38,135 INFO L87 Difference]: Start difference. First operand 30 states and 39 transitions. Second operand has 9 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-16 00:15:38,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:15:38,264 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2021-12-16 00:15:38,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:15:38,264 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2021-12-16 00:15:38,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:15:38,265 INFO L225 Difference]: With dead ends: 41 [2021-12-16 00:15:38,265 INFO L226 Difference]: Without dead ends: 39 [2021-12-16 00:15:38,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-12-16 00:15:38,267 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 19 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 00:15:38,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 177 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 00:15:38,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-12-16 00:15:38,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2021-12-16 00:15:38,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 23 states have internal predecessors, (24), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-16 00:15:38,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2021-12-16 00:15:38,280 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 24 [2021-12-16 00:15:38,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:15:38,284 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions. [2021-12-16 00:15:38,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-16 00:15:38,285 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2021-12-16 00:15:38,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-16 00:15:38,285 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:15:38,285 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:15:38,302 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-16 00:15:38,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:15:38,486 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:15:38,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:15:38,487 INFO L85 PathProgramCache]: Analyzing trace with hash -854318377, now seen corresponding path program 1 times [2021-12-16 00:15:38,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:15:38,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724219505] [2021-12-16 00:15:38,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:15:38,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:15:38,496 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 00:15:38,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [589300789] [2021-12-16 00:15:38,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:15:38,496 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:15:38,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:15:38,497 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) [2021-12-16 00:15:38,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-16 00:15:38,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:15:38,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-16 00:15:38,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 00:15:38,673 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-16 00:15:38,673 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 00:15:38,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:15:38,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724219505] [2021-12-16 00:15:38,674 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 00:15:38,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589300789] [2021-12-16 00:15:38,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589300789] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:15:38,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:15:38,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 00:15:38,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776524934] [2021-12-16 00:15:38,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:15:38,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 00:15:38,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:15:38,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 00:15:38,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-16 00:15:38,678 INFO L87 Difference]: Start difference. First operand 36 states and 45 transitions. Second operand has 9 states, 8 states have (on average 2.125) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-16 00:15:38,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:15:38,776 INFO L93 Difference]: Finished difference Result 53 states and 68 transitions. [2021-12-16 00:15:38,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 00:15:38,777 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 29 [2021-12-16 00:15:38,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:15:38,780 INFO L225 Difference]: With dead ends: 53 [2021-12-16 00:15:38,780 INFO L226 Difference]: Without dead ends: 50 [2021-12-16 00:15:38,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-12-16 00:15:38,784 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 39 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 00:15:38,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 174 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 00:15:38,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-12-16 00:15:38,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2021-12-16 00:15:38,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 29 states have internal predecessors, (32), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-12-16 00:15:38,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 63 transitions. [2021-12-16 00:15:38,805 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 63 transitions. Word has length 29 [2021-12-16 00:15:38,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:15:38,806 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 63 transitions. [2021-12-16 00:15:38,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-16 00:15:38,806 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 63 transitions. [2021-12-16 00:15:38,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-16 00:15:38,807 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:15:38,807 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:15:38,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-16 00:15:39,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-16 00:15:39,019 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:15:39,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:15:39,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1997084946, now seen corresponding path program 1 times [2021-12-16 00:15:39,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:15:39,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951803099] [2021-12-16 00:15:39,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:15:39,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:15:39,030 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 00:15:39,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [340642209] [2021-12-16 00:15:39,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:15:39,032 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:15:39,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:15:39,034 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) [2021-12-16 00:15:39,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-16 00:15:39,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:15:39,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-16 00:15:39,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 00:15:39,143 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-16 00:15:39,144 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 00:15:39,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:15:39,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951803099] [2021-12-16 00:15:39,145 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 00:15:39,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340642209] [2021-12-16 00:15:39,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340642209] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:15:39,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:15:39,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 00:15:39,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491757884] [2021-12-16 00:15:39,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:15:39,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 00:15:39,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:15:39,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 00:15:39,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 00:15:39,148 INFO L87 Difference]: Start difference. First operand 49 states and 63 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-12-16 00:15:39,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:15:39,194 INFO L93 Difference]: Finished difference Result 75 states and 101 transitions. [2021-12-16 00:15:39,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 00:15:39,194 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 36 [2021-12-16 00:15:39,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:15:39,195 INFO L225 Difference]: With dead ends: 75 [2021-12-16 00:15:39,195 INFO L226 Difference]: Without dead ends: 73 [2021-12-16 00:15:39,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 00:15:39,196 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 10 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 00:15:39,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 144 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 00:15:39,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-12-16 00:15:39,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 66. [2021-12-16 00:15:39,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 37 states have (on average 1.162162162162162) internal successors, (43), 39 states have internal predecessors, (43), 23 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-16 00:15:39,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 88 transitions. [2021-12-16 00:15:39,208 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 88 transitions. Word has length 36 [2021-12-16 00:15:39,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:15:39,208 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 88 transitions. [2021-12-16 00:15:39,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-12-16 00:15:39,208 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 88 transitions. [2021-12-16 00:15:39,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-16 00:15:39,209 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:15:39,209 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:15:39,228 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-16 00:15:39,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:15:39,419 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:15:39,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:15:39,420 INFO L85 PathProgramCache]: Analyzing trace with hash -2056573358, now seen corresponding path program 1 times [2021-12-16 00:15:39,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:15:39,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736751704] [2021-12-16 00:15:39,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:15:39,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:15:39,432 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 00:15:39,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2038269701] [2021-12-16 00:15:39,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:15:39,432 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:15:39,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:15:39,433 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) [2021-12-16 00:15:39,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-16 00:15:39,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:15:39,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-16 00:15:39,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 00:15:39,583 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-16 00:15:39,583 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 00:15:39,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:15:39,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736751704] [2021-12-16 00:15:39,584 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 00:15:39,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038269701] [2021-12-16 00:15:39,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038269701] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 00:15:39,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 00:15:39,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 00:15:39,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474228058] [2021-12-16 00:15:39,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 00:15:39,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 00:15:39,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:15:39,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 00:15:39,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-16 00:15:39,585 INFO L87 Difference]: Start difference. First operand 66 states and 88 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-16 00:15:39,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:15:39,666 INFO L93 Difference]: Finished difference Result 72 states and 93 transitions. [2021-12-16 00:15:39,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 00:15:39,667 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 46 [2021-12-16 00:15:39,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:15:39,668 INFO L225 Difference]: With dead ends: 72 [2021-12-16 00:15:39,669 INFO L226 Difference]: Without dead ends: 70 [2021-12-16 00:15:39,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-16 00:15:39,670 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 16 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 00:15:39,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 169 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 00:15:39,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-12-16 00:15:39,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-12-16 00:15:39,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 40 states have (on average 1.15) internal successors, (46), 42 states have internal predecessors, (46), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-16 00:15:39,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 91 transitions. [2021-12-16 00:15:39,677 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 91 transitions. Word has length 46 [2021-12-16 00:15:39,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:15:39,677 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 91 transitions. [2021-12-16 00:15:39,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-16 00:15:39,677 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 91 transitions. [2021-12-16 00:15:39,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-16 00:15:39,678 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:15:39,678 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:15:39,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-16 00:15:39,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:15:39,898 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:15:39,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:15:39,898 INFO L85 PathProgramCache]: Analyzing trace with hash -2085516536, now seen corresponding path program 1 times [2021-12-16 00:15:39,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:15:39,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693146240] [2021-12-16 00:15:39,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:15:39,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:15:39,906 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 00:15:39,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1553971020] [2021-12-16 00:15:39,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:15:39,907 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:15:39,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:15:39,910 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) [2021-12-16 00:15:39,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-16 00:15:39,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:15:39,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-16 00:15:39,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 00:15:40,068 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-16 00:15:40,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 00:15:40,214 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-16 00:15:40,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:15:40,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693146240] [2021-12-16 00:15:40,214 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 00:15:40,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553971020] [2021-12-16 00:15:40,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553971020] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 00:15:40,215 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 00:15:40,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-12-16 00:15:40,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321275931] [2021-12-16 00:15:40,215 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 00:15:40,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 00:15:40,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:15:40,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 00:15:40,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-12-16 00:15:40,216 INFO L87 Difference]: Start difference. First operand 70 states and 91 transitions. Second operand has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 7 states have internal predecessors, (23), 4 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) [2021-12-16 00:15:40,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:15:40,326 INFO L93 Difference]: Finished difference Result 76 states and 96 transitions. [2021-12-16 00:15:40,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 00:15:40,327 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 7 states have internal predecessors, (23), 4 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 52 [2021-12-16 00:15:40,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:15:40,330 INFO L225 Difference]: With dead ends: 76 [2021-12-16 00:15:40,330 INFO L226 Difference]: Without dead ends: 74 [2021-12-16 00:15:40,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 92 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-12-16 00:15:40,332 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 24 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 00:15:40,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 135 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 00:15:40,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-12-16 00:15:40,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-12-16 00:15:40,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 45 states have internal predecessors, (49), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-16 00:15:40,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 94 transitions. [2021-12-16 00:15:40,355 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 94 transitions. Word has length 52 [2021-12-16 00:15:40,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:15:40,356 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 94 transitions. [2021-12-16 00:15:40,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 7 states have internal predecessors, (23), 4 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) [2021-12-16 00:15:40,357 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 94 transitions. [2021-12-16 00:15:40,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-16 00:15:40,361 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 00:15:40,362 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:15:40,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-16 00:15:40,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:15:40,562 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 00:15:40,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 00:15:40,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1724367982, now seen corresponding path program 1 times [2021-12-16 00:15:40,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 00:15:40,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232707183] [2021-12-16 00:15:40,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:15:40,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 00:15:40,571 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 00:15:40,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1689978573] [2021-12-16 00:15:40,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 00:15:40,571 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:15:40,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 00:15:40,581 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) [2021-12-16 00:15:40,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-16 00:15:40,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 00:15:40,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-16 00:15:40,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 00:15:40,777 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-12-16 00:15:40,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 00:15:40,883 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-12-16 00:15:40,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 00:15:40,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232707183] [2021-12-16 00:15:40,883 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 00:15:40,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689978573] [2021-12-16 00:15:40,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689978573] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 00:15:40,883 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 00:15:40,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-12-16 00:15:40,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560115233] [2021-12-16 00:15:40,884 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 00:15:40,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 00:15:40,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 00:15:40,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 00:15:40,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-12-16 00:15:40,884 INFO L87 Difference]: Start difference. First operand 74 states and 94 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 6 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2021-12-16 00:15:41,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 00:15:41,128 INFO L93 Difference]: Finished difference Result 101 states and 133 transitions. [2021-12-16 00:15:41,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 00:15:41,129 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 6 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 59 [2021-12-16 00:15:41,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 00:15:41,129 INFO L225 Difference]: With dead ends: 101 [2021-12-16 00:15:41,129 INFO L226 Difference]: Without dead ends: 0 [2021-12-16 00:15:41,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 107 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-12-16 00:15:41,130 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 33 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 00:15:41,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 185 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 00:15:41,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-16 00:15:41,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-16 00:15:41,131 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) [2021-12-16 00:15:41,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-16 00:15:41,131 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 59 [2021-12-16 00:15:41,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 00:15:41,131 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-16 00:15:41,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 6 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2021-12-16 00:15:41,131 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-16 00:15:41,131 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-16 00:15:41,133 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-16 00:15:41,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-16 00:15:41,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 00:15:41,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-16 00:15:42,345 INFO L858 garLoopResultBuilder]: For program point L64(line 64) no Hoare annotation was computed. [2021-12-16 00:15:42,345 INFO L858 garLoopResultBuilder]: For program point L31(line 31) no Hoare annotation was computed. [2021-12-16 00:15:42,345 INFO L861 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: true [2021-12-16 00:15:42,346 INFO L858 garLoopResultBuilder]: For program point L27-1(line 27) no Hoare annotation was computed. [2021-12-16 00:15:42,346 INFO L854 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~y~0#1| 5) (<= 1 |ULTIMATE.start_main_~r~0#1|) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~q~0#1|))) (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|)) (<= 1 |ULTIMATE.start_main_~y~0#1|)) [2021-12-16 00:15:42,346 INFO L854 garLoopResultBuilder]: At program point L48-1(line 48) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~y~0#1| 5) (<= 1 |ULTIMATE.start_main_~r~0#1|) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~q~0#1|))) (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|)) (<= 1 |ULTIMATE.start_main_~y~0#1|)) [2021-12-16 00:15:42,346 INFO L858 garLoopResultBuilder]: For program point L40(lines 38 62) no Hoare annotation was computed. [2021-12-16 00:15:42,346 INFO L861 garLoopResultBuilder]: At program point L65(lines 22 66) the Hoare annotation is: true [2021-12-16 00:15:42,346 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-16 00:15:42,346 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-16 00:15:42,346 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-16 00:15:42,346 INFO L854 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~y~0#1| 5) (<= 1 |ULTIMATE.start_main_~r~0#1|) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~q~0#1|))) (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|)) (<= 1 |ULTIMATE.start_main_~y~0#1|)) [2021-12-16 00:15:42,346 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-16 00:15:42,346 INFO L861 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: true [2021-12-16 00:15:42,346 INFO L854 garLoopResultBuilder]: At program point L29-1(line 29) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~y~0#1| 5) (<= 0 |ULTIMATE.start_main_~y~0#1|)) [2021-12-16 00:15:42,346 INFO L858 garLoopResultBuilder]: For program point L50(lines 47 59) no Hoare annotation was computed. [2021-12-16 00:15:42,346 INFO L854 garLoopResultBuilder]: At program point L38-2(lines 38 62) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~y~0#1| 5) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~q~0#1|))) (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|)) (<= 1 |ULTIMATE.start_main_~y~0#1|)) [2021-12-16 00:15:42,346 INFO L854 garLoopResultBuilder]: At program point L38-3(lines 38 62) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~y~0#1| 5)) (.cse1 (<= 1 |ULTIMATE.start_main_~y~0#1|))) (or (and .cse0 (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~q~0#1|))) (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|)) .cse1) (and .cse0 (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|) .cse1))) [2021-12-16 00:15:42,347 INFO L854 garLoopResultBuilder]: At program point L55(line 55) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|))) (and (<= |ULTIMATE.start_main_~y~0#1| 5) (<= 1 |ULTIMATE.start_main_~r~0#1|) (<= (* 2 .cse0) |ULTIMATE.start_main_~r~0#1|) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~q~0#1|))) (= |ULTIMATE.start_main_~b~0#1| .cse0) (<= 1 |ULTIMATE.start_main_~y~0#1|))) [2021-12-16 00:15:42,347 INFO L858 garLoopResultBuilder]: For program point L55-1(line 55) no Hoare annotation was computed. [2021-12-16 00:15:42,347 INFO L854 garLoopResultBuilder]: At program point L47-2(lines 47 59) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~y~0#1| 5) (<= 1 |ULTIMATE.start_main_~r~0#1|) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~q~0#1|))) (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|)) (<= 1 |ULTIMATE.start_main_~y~0#1|)) [2021-12-16 00:15:42,347 INFO L858 garLoopResultBuilder]: For program point L47-3(lines 47 59) no Hoare annotation was computed. [2021-12-16 00:15:42,347 INFO L854 garLoopResultBuilder]: At program point L39(line 39) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~y~0#1| 5) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~q~0#1|))) (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|)) (<= 1 |ULTIMATE.start_main_~y~0#1|)) [2021-12-16 00:15:42,347 INFO L854 garLoopResultBuilder]: At program point L39-1(line 39) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~y~0#1| 5) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~q~0#1|))) (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|)) (<= 1 |ULTIMATE.start_main_~y~0#1|)) [2021-12-16 00:15:42,347 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 11 13) the Hoare annotation is: true [2021-12-16 00:15:42,347 INFO L858 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2021-12-16 00:15:42,347 INFO L858 garLoopResultBuilder]: For program point L12-2(lines 11 13) no Hoare annotation was computed. [2021-12-16 00:15:42,347 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 11 13) no Hoare annotation was computed. [2021-12-16 00:15:42,347 INFO L858 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-12-16 00:15:42,347 INFO L858 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-12-16 00:15:42,347 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true [2021-12-16 00:15:42,347 INFO L858 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2021-12-16 00:15:42,347 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2021-12-16 00:15:42,348 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-12-16 00:15:42,350 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2021-12-16 00:15:42,350 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-16 00:15:42,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 12:15:42 BoogieIcfgContainer [2021-12-16 00:15:42,359 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-16 00:15:42,360 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-16 00:15:42,360 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-16 00:15:42,360 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-16 00:15:42,360 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:15:37" (3/4) ... [2021-12-16 00:15:42,362 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-16 00:15:42,366 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2021-12-16 00:15:42,366 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-12-16 00:15:42,368 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-12-16 00:15:42,368 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-16 00:15:42,369 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-16 00:15:42,369 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-16 00:15:42,394 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-16 00:15:42,394 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-16 00:15:42,394 INFO L158 Benchmark]: Toolchain (without parser) took 5227.35ms. Allocated memory was 90.2MB in the beginning and 138.4MB in the end (delta: 48.2MB). Free memory was 60.3MB in the beginning and 86.0MB in the end (delta: -25.8MB). Peak memory consumption was 22.7MB. Max. memory is 16.1GB. [2021-12-16 00:15:42,394 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 90.2MB. Free memory was 47.6MB in the beginning and 47.5MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 00:15:42,394 INFO L158 Benchmark]: CACSL2BoogieTranslator took 179.21ms. Allocated memory was 90.2MB in the beginning and 115.3MB in the end (delta: 25.2MB). Free memory was 60.3MB in the beginning and 92.4MB in the end (delta: -32.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-16 00:15:42,395 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.85ms. Allocated memory is still 115.3MB. Free memory was 92.4MB in the beginning and 91.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-16 00:15:42,395 INFO L158 Benchmark]: Boogie Preprocessor took 19.82ms. Allocated memory is still 115.3MB. Free memory was 90.7MB in the beginning and 89.9MB in the end (delta: 765.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 00:15:42,395 INFO L158 Benchmark]: RCFGBuilder took 181.18ms. Allocated memory is still 115.3MB. Free memory was 89.9MB in the beginning and 80.0MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-16 00:15:42,396 INFO L158 Benchmark]: TraceAbstraction took 4785.19ms. Allocated memory was 115.3MB in the beginning and 138.4MB in the end (delta: 23.1MB). Free memory was 79.6MB in the beginning and 89.2MB in the end (delta: -9.6MB). Peak memory consumption was 51.4MB. Max. memory is 16.1GB. [2021-12-16 00:15:42,396 INFO L158 Benchmark]: Witness Printer took 34.01ms. Allocated memory is still 138.4MB. Free memory was 89.2MB in the beginning and 86.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-16 00:15:42,397 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 90.2MB. Free memory was 47.6MB in the beginning and 47.5MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 179.21ms. Allocated memory was 90.2MB in the beginning and 115.3MB in the end (delta: 25.2MB). Free memory was 60.3MB in the beginning and 92.4MB in the end (delta: -32.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.85ms. Allocated memory is still 115.3MB. Free memory was 92.4MB in the beginning and 91.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.82ms. Allocated memory is still 115.3MB. Free memory was 90.7MB in the beginning and 89.9MB in the end (delta: 765.8kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 181.18ms. Allocated memory is still 115.3MB. Free memory was 89.9MB in the beginning and 80.0MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 4785.19ms. Allocated memory was 115.3MB in the beginning and 138.4MB in the end (delta: 23.1MB). Free memory was 79.6MB in the beginning and 89.2MB in the end (delta: -9.6MB). Peak memory consumption was 51.4MB. Max. memory is 16.1GB. * Witness Printer took 34.01ms. Allocated memory is still 138.4MB. Free memory was 89.2MB in the beginning and 86.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. 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 3 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.7s, OverallIterations: 7, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 171 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 141 mSDsluCounter, 1027 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 782 mSDsCounter, 114 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 589 IncrementalHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 114 mSolverCounterUnsat, 245 mSDtfsCounter, 589 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 375 GetRequests, 318 SyntacticMatches, 4 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=6, InterpolantAutomatonStates: 49, 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, 7 MinimizatonAttempts, 11 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 57 PreInvPairs, 102 NumberOfFragments, 219 HoareAnnotationTreeSize, 57 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 15 FomulaSimplificationsInter, 1630 FormulaSimplificationTreeSizeReductionInter, 1.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 270 NumberOfCodeBlocks, 270 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 372 ConstructedInterpolants, 0 QuantifiedInterpolants, 855 SizeOfPredicates, 21 NumberOfNonLiveVariables, 649 ConjunctsInSsa, 74 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 380/400 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: 47]: Loop Invariant Derived loop invariant: (((y <= 5 && 1 <= r) && x == r + y * q) && b == y * a) && 1 <= y - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: ((y <= 5 && x == r + y * q) && b == y * a) && 1 <= y - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-12-16 00:15:42,423 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