./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf 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/sqrt1-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 572360d878facce0c5d840a57f70fa0d65d827a5 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 15:00:23,441 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 15:00:23,442 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 15:00:23,468 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 15:00:23,468 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 15:00:23,469 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 15:00:23,469 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 15:00:23,471 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 15:00:23,472 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 15:00:23,472 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 15:00:23,473 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 15:00:23,473 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 15:00:23,474 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 15:00:23,474 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 15:00:23,475 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 15:00:23,476 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 15:00:23,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 15:00:23,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 15:00:23,478 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 15:00:23,479 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 15:00:23,480 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 15:00:23,481 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 15:00:23,481 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 15:00:23,482 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 15:00:23,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 15:00:23,484 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 15:00:23,484 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 15:00:23,484 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 15:00:23,485 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 15:00:23,497 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 15:00:23,497 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 15:00:23,498 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 15:00:23,498 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 15:00:23,498 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 15:00:23,499 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 15:00:23,499 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 15:00:23,499 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 15:00:23,500 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 15:00:23,500 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 15:00:23,500 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 15:00:23,501 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 15:00:23,501 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 15:00:23,516 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 15:00:23,516 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 15:00:23,516 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 15:00:23,516 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 15:00:23,517 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 15:00:23,517 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 15:00:23,517 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 15:00:23,517 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 15:00:23,517 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 15:00:23,517 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 15:00:23,517 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 15:00:23,518 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 15:00:23,518 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 15:00:23,518 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 15:00:23,518 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 15:00:23,518 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 15:00:23,518 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 15:00:23,518 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 15:00:23,518 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 15:00:23,518 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 15:00:23,518 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 15:00:23,518 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 15:00:23,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 15:00:23,519 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 15:00:23,519 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 15:00:23,519 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 15:00:23,519 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 15:00:23,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 15:00:23,519 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 15:00:23,519 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 15:00:23,519 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 572360d878facce0c5d840a57f70fa0d65d827a5 [2021-08-29 15:00:23,731 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 15:00:23,744 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 15:00:23,746 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 15:00:23,746 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 15:00:23,747 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 15:00:23,748 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound5.c [2021-08-29 15:00:23,792 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7f0775f0/04642acd1e274d649281323ec21f4a35/FLAG8051f47d2 [2021-08-29 15:00:24,130 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 15:00:24,130 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound5.c [2021-08-29 15:00:24,134 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7f0775f0/04642acd1e274d649281323ec21f4a35/FLAG8051f47d2 [2021-08-29 15:00:24,591 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7f0775f0/04642acd1e274d649281323ec21f4a35 [2021-08-29 15:00:24,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 15:00:24,595 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 15:00:24,604 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 15:00:24,605 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 15:00:24,607 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 15:00:24,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 03:00:24" (1/1) ... [2021-08-29 15:00:24,610 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61e55f83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:00:24, skipping insertion in model container [2021-08-29 15:00:24,610 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 03:00:24" (1/1) ... [2021-08-29 15:00:24,618 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 15:00:24,630 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 15:00:24,757 WARN L228 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/sqrt1-ll_valuebound5.c[520,533] [2021-08-29 15:00:24,765 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 15:00:24,774 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 15:00:24,784 WARN L228 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/sqrt1-ll_valuebound5.c[520,533] [2021-08-29 15:00:24,799 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 15:00:24,838 INFO L208 MainTranslator]: Completed translation [2021-08-29 15:00:24,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:00:24 WrapperNode [2021-08-29 15:00:24,843 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 15:00:24,848 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 15:00:24,848 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 15:00:24,849 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 15:00:24,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:00:24" (1/1) ... [2021-08-29 15:00:24,859 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:00:24" (1/1) ... [2021-08-29 15:00:24,875 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 15:00:24,876 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 15:00:24,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 15:00:24,876 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 15:00:24,881 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:00:24" (1/1) ... [2021-08-29 15:00:24,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:00:24" (1/1) ... [2021-08-29 15:00:24,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:00:24" (1/1) ... [2021-08-29 15:00:24,888 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:00:24" (1/1) ... [2021-08-29 15:00:24,896 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:00:24" (1/1) ... [2021-08-29 15:00:24,899 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:00:24" (1/1) ... [2021-08-29 15:00:24,899 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:00:24" (1/1) ... [2021-08-29 15:00:24,900 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 15:00:24,901 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 15:00:24,901 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 15:00:24,901 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 15:00:24,902 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:00:24" (1/1) ... [2021-08-29 15:00:24,907 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 15:00:24,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 15:00:24,923 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) [2021-08-29 15:00:24,942 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 [2021-08-29 15:00:24,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 15:00:24,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 15:00:24,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 15:00:24,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 15:00:25,138 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 15:00:25,138 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-08-29 15:00:25,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 03:00:25 BoogieIcfgContainer [2021-08-29 15:00:25,139 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 15:00:25,140 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 15:00:25,140 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 15:00:25,142 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 15:00:25,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 03:00:24" (1/3) ... [2021-08-29 15:00:25,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18777d0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 03:00:25, skipping insertion in model container [2021-08-29 15:00:25,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:00:24" (2/3) ... [2021-08-29 15:00:25,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18777d0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 03:00:25, skipping insertion in model container [2021-08-29 15:00:25,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 03:00:25" (3/3) ... [2021-08-29 15:00:25,161 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_valuebound5.c [2021-08-29 15:00:25,164 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 15:00:25,164 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-08-29 15:00:25,210 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 15:00:25,217 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, mConcurrency=FINITE_AUTOMATA, 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 [2021-08-29 15:00:25,217 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-08-29 15:00:25,234 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 32 states have internal predecessors, (42), 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) [2021-08-29 15:00:25,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-29 15:00:25,239 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 15:00:25,239 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-29 15:00:25,240 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-29 15:00:25,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 15:00:25,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2021-08-29 15:00:25,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 15:00:25,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961245156] [2021-08-29 15:00:25,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 15:00:25,256 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 15:00:25,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 15:00:25,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 15:00:25,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 15:00:25,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961245156] [2021-08-29 15:00:25,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961245156] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 15:00:25,386 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 15:00:25,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 15:00:25,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344997760] [2021-08-29 15:00:25,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 15:00:25,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 15:00:25,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 15:00:25,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 15:00:25,412 INFO L87 Difference]: Start difference. First operand has 33 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 32 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-08-29 15:00:25,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 15:00:25,503 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2021-08-29 15:00:25,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 15:00:25,505 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-08-29 15:00:25,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 15:00:25,525 INFO L225 Difference]: With dead ends: 63 [2021-08-29 15:00:25,526 INFO L226 Difference]: Without dead ends: 29 [2021-08-29 15:00:25,527 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 15:00:25,530 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.29ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 77.14ms IncrementalHoareTripleChecker+Time [2021-08-29 15:00:25,530 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 33 Unknown, 0 Unchecked, 0.29ms Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 77.14ms Time] [2021-08-29 15:00:25,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-08-29 15:00:25,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-08-29 15:00:25,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 28 states have internal predecessors, (29), 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) [2021-08-29 15:00:25,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2021-08-29 15:00:25,570 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 7 [2021-08-29 15:00:25,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 15:00:25,571 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2021-08-29 15:00:25,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-08-29 15:00:25,571 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2021-08-29 15:00:25,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-29 15:00:25,571 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 15:00:25,571 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-29 15:00:25,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 15:00:25,572 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-29 15:00:25,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 15:00:25,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2021-08-29 15:00:25,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 15:00:25,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316943678] [2021-08-29 15:00:25,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 15:00:25,573 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 15:00:25,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 15:00:25,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 15:00:25,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 15:00:25,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316943678] [2021-08-29 15:00:25,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316943678] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 15:00:25,691 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 15:00:25,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 15:00:25,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846457086] [2021-08-29 15:00:25,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 15:00:25,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 15:00:25,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 15:00:25,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 15:00:25,693 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-08-29 15:00:25,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 15:00:25,771 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2021-08-29 15:00:25,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 15:00:25,772 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-08-29 15:00:25,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 15:00:25,772 INFO L225 Difference]: With dead ends: 54 [2021-08-29 15:00:25,772 INFO L226 Difference]: Without dead ends: 50 [2021-08-29 15:00:25,773 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.44ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 15:00:25,774 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 20 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.21ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60.08ms IncrementalHoareTripleChecker+Time [2021-08-29 15:00:25,774 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 0 Invalid, 96 Unknown, 0 Unchecked, 1.21ms Time], IncrementalHoareTripleChecker [16 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 60.08ms Time] [2021-08-29 15:00:25,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-08-29 15:00:25,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 38. [2021-08-29 15:00:25,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 32 states have (on average 1.28125) internal successors, (41), 37 states have internal predecessors, (41), 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) [2021-08-29 15:00:25,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2021-08-29 15:00:25,780 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 7 [2021-08-29 15:00:25,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 15:00:25,781 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2021-08-29 15:00:25,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-08-29 15:00:25,781 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2021-08-29 15:00:25,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-29 15:00:25,781 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 15:00:25,782 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 15:00:25,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-29 15:00:25,782 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-29 15:00:25,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 15:00:25,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1186787538, now seen corresponding path program 1 times [2021-08-29 15:00:25,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 15:00:25,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993826162] [2021-08-29 15:00:25,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 15:00:25,783 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 15:00:25,792 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 15:00:25,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1152985449] [2021-08-29 15:00:25,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 15:00:25,793 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 15:00:25,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 15:00:25,794 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) [2021-08-29 15:00:25,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-29 15:00:25,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 15:00:25,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-29 15:00:25,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 15:00:25,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 15:00:25,898 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 15:00:25,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 15:00:25,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993826162] [2021-08-29 15:00:25,899 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 15:00:25,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152985449] [2021-08-29 15:00:25,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152985449] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 15:00:25,899 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 15:00:25,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 15:00:25,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106802611] [2021-08-29 15:00:25,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 15:00:25,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 15:00:25,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 15:00:25,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 15:00:25,901 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2021-08-29 15:00:25,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 15:00:25,970 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2021-08-29 15:00:25,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 15:00:25,970 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-08-29 15:00:25,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 15:00:25,971 INFO L225 Difference]: With dead ends: 50 [2021-08-29 15:00:25,971 INFO L226 Difference]: Without dead ends: 46 [2021-08-29 15:00:25,971 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.82ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 15:00:25,972 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 14 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.73ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.55ms IncrementalHoareTripleChecker+Time [2021-08-29 15:00:25,972 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 0 Invalid, 90 Unknown, 0 Unchecked, 0.73ms Time], IncrementalHoareTripleChecker [4 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 56.55ms Time] [2021-08-29 15:00:25,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-08-29 15:00:25,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2021-08-29 15:00:25,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 39 states have internal predecessors, (42), 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) [2021-08-29 15:00:25,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2021-08-29 15:00:25,978 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 9 [2021-08-29 15:00:25,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 15:00:25,978 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2021-08-29 15:00:25,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2021-08-29 15:00:25,978 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2021-08-29 15:00:25,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-29 15:00:25,979 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 15:00:25,979 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 15:00:26,014 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-08-29 15:00:26,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 15:00:26,193 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-29 15:00:26,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 15:00:26,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1958320619, now seen corresponding path program 1 times [2021-08-29 15:00:26,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 15:00:26,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792157577] [2021-08-29 15:00:26,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 15:00:26,195 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 15:00:26,202 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 15:00:26,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1831710880] [2021-08-29 15:00:26,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 15:00:26,202 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 15:00:26,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 15:00:26,204 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) [2021-08-29 15:00:26,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-29 15:00:26,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 15:00:26,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-29 15:00:26,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 15:00:26,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 15:00:26,311 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 15:00:26,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 15:00:26,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792157577] [2021-08-29 15:00:26,312 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 15:00:26,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831710880] [2021-08-29 15:00:26,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831710880] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 15:00:26,312 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 15:00:26,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 15:00:26,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967789766] [2021-08-29 15:00:26,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 15:00:26,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 15:00:26,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 15:00:26,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 15:00:26,314 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-08-29 15:00:26,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 15:00:26,373 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2021-08-29 15:00:26,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 15:00:26,373 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-08-29 15:00:26,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 15:00:26,374 INFO L225 Difference]: With dead ends: 47 [2021-08-29 15:00:26,374 INFO L226 Difference]: Without dead ends: 37 [2021-08-29 15:00:26,374 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.58ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 15:00:26,375 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.63ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.77ms IncrementalHoareTripleChecker+Time [2021-08-29 15:00:26,376 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 92 Unknown, 0 Unchecked, 0.63ms Time], IncrementalHoareTripleChecker [4 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 47.77ms Time] [2021-08-29 15:00:26,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-08-29 15:00:26,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2021-08-29 15:00:26,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 30 states have (on average 1.2) internal successors, (36), 35 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 15:00:26,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2021-08-29 15:00:26,380 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 11 [2021-08-29 15:00:26,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 15:00:26,380 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2021-08-29 15:00:26,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-08-29 15:00:26,380 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2021-08-29 15:00:26,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-29 15:00:26,381 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 15:00:26,381 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 15:00:26,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-29 15:00:26,600 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,SelfDestructingSolverStorable3 [2021-08-29 15:00:26,600 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-29 15:00:26,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 15:00:26,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1783845574, now seen corresponding path program 1 times [2021-08-29 15:00:26,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 15:00:26,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828282765] [2021-08-29 15:00:26,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 15:00:26,601 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 15:00:26,608 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 15:00:26,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1303074198] [2021-08-29 15:00:26,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 15:00:26,609 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 15:00:26,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 15:00:26,626 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) [2021-08-29 15:00:26,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-29 15:00:26,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 15:00:26,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-29 15:00:26,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 15:00:26,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 15:00:26,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 15:00:26,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-29 15:00:26,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 15:00:26,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828282765] [2021-08-29 15:00:26,787 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 15:00:26,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303074198] [2021-08-29 15:00:26,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303074198] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 15:00:26,787 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 15:00:26,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2021-08-29 15:00:26,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945421430] [2021-08-29 15:00:26,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-29 15:00:26,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 15:00:26,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-29 15:00:26,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-29 15:00:26,789 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 15:00:26,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 15:00:26,851 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2021-08-29 15:00:26,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-29 15:00:26,851 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-08-29 15:00:26,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 15:00:26,851 INFO L225 Difference]: With dead ends: 57 [2021-08-29 15:00:26,851 INFO L226 Difference]: Without dead ends: 53 [2021-08-29 15:00:26,852 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 27.70ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-08-29 15:00:26,852 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 49 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.91ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.44ms IncrementalHoareTripleChecker+Time [2021-08-29 15:00:26,853 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 0 Invalid, 113 Unknown, 0 Unchecked, 0.91ms Time], IncrementalHoareTripleChecker [8 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 44.44ms Time] [2021-08-29 15:00:26,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-08-29 15:00:26,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 32. [2021-08-29 15:00:26,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 31 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 15:00:26,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2021-08-29 15:00:26,856 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 14 [2021-08-29 15:00:26,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 15:00:26,857 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2021-08-29 15:00:26,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 15:00:26,857 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2021-08-29 15:00:26,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-29 15:00:26,857 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 15:00:26,857 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 15:00:26,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-29 15:00:27,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 15:00:27,058 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-29 15:00:27,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 15:00:27,058 INFO L82 PathProgramCache]: Analyzing trace with hash -583489763, now seen corresponding path program 1 times [2021-08-29 15:00:27,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 15:00:27,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89576860] [2021-08-29 15:00:27,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 15:00:27,059 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 15:00:27,071 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 15:00:27,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [459508659] [2021-08-29 15:00:27,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 15:00:27,073 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 15:00:27,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 15:00:27,084 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) [2021-08-29 15:00:27,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-29 15:00:27,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 15:00:27,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 15 conjunts are in the unsatisfiable core [2021-08-29 15:00:27,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 15:00:27,245 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 15:00:27,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 15:00:27,321 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 15:00:27,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 15:00:27,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89576860] [2021-08-29 15:00:27,321 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 15:00:27,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459508659] [2021-08-29 15:00:27,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459508659] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 15:00:27,322 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 15:00:27,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-08-29 15:00:27,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969612736] [2021-08-29 15:00:27,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-29 15:00:27,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 15:00:27,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-29 15:00:27,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-08-29 15:00:27,326 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 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) [2021-08-29 15:00:27,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 15:00:27,586 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2021-08-29 15:00:27,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 15:00:27,586 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-08-29 15:00:27,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 15:00:27,586 INFO L225 Difference]: With dead ends: 45 [2021-08-29 15:00:27,586 INFO L226 Difference]: Without dead ends: 0 [2021-08-29 15:00:27,587 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 31.77ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-08-29 15:00:27,587 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 33 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 217.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.61ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 233.08ms IncrementalHoareTripleChecker+Time [2021-08-29 15:00:27,588 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 0 Invalid, 112 Unknown, 0 Unchecked, 1.61ms Time], IncrementalHoareTripleChecker [43 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 233.08ms Time] [2021-08-29 15:00:27,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-29 15:00:27,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-29 15:00:27,588 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) [2021-08-29 15:00:27,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-29 15:00:27,588 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-08-29 15:00:27,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 15:00:27,588 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-29 15:00:27,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 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) [2021-08-29 15:00:27,589 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-29 15:00:27,589 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-29 15:00:27,590 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2021-08-29 15:00:27,591 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2021-08-29 15:00:27,591 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2021-08-29 15:00:27,591 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2021-08-29 15:00:27,591 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2021-08-29 15:00:27,591 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2021-08-29 15:00:27,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-29 15:00:27,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 15:00:27,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-29 15:00:27,805 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 15:00:27,838 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 15:00:27,856 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 15:00:27,872 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 15:00:27,892 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 15:00:27,917 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 15:00:27,918 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 15:00:27,927 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 15:00:28,125 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-08-29 15:00:28,125 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-08-29 15:00:28,125 INFO L861 garLoopResultBuilder]: At program point L48(lines 20 49) the Hoare annotation is: true [2021-08-29 15:00:28,125 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-29 15:00:28,126 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-08-29 15:00:28,126 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-29 15:00:28,126 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-29 15:00:28,126 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-08-29 15:00:28,126 INFO L858 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-08-29 15:00:28,126 INFO L854 garLoopResultBuilder]: At program point L12-2(lines 11 17) the Hoare annotation is: (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~s~0) (+ 2 (* 4 ULTIMATE.start_main_~a~0) (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0))) (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1))) [2021-08-29 15:00:28,126 INFO L858 garLoopResultBuilder]: For program point L12-3(lines 12 15) no Hoare annotation was computed. [2021-08-29 15:00:28,126 INFO L858 garLoopResultBuilder]: For program point L8(lines 8 10) no Hoare annotation was computed. [2021-08-29 15:00:28,126 INFO L854 garLoopResultBuilder]: At program point L12-5(lines 11 17) the Hoare annotation is: (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~s~0) (+ 2 (* 4 ULTIMATE.start_main_~a~0) (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0))) (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1))) [2021-08-29 15:00:28,126 INFO L858 garLoopResultBuilder]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2021-08-29 15:00:28,126 INFO L854 garLoopResultBuilder]: At program point L12-8(lines 36 37) the Hoare annotation is: (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~s~0) (+ 2 (* 4 ULTIMATE.start_main_~a~0) (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0))) (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1))) [2021-08-29 15:00:28,126 INFO L858 garLoopResultBuilder]: For program point L12-9(lines 12 15) no Hoare annotation was computed. [2021-08-29 15:00:28,126 INFO L854 garLoopResultBuilder]: At program point L12-11(lines 11 17) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1) (= ULTIMATE.start_main_~s~0 1) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))) (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~s~0) (+ 2 (* 4 ULTIMATE.start_main_~a~0) (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0))) (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1)))) [2021-08-29 15:00:28,126 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-29 15:00:28,127 INFO L858 garLoopResultBuilder]: For program point L12-12(lines 12 15) no Hoare annotation was computed. [2021-08-29 15:00:28,127 INFO L854 garLoopResultBuilder]: At program point L12-14(lines 11 17) the Hoare annotation is: (or (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~s~0) (+ 2 (* 4 ULTIMATE.start_main_~a~0) (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0))) (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1))) (and (= ULTIMATE.start_main_~t~0 1) (= ULTIMATE.start_main_~s~0 1) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)))) [2021-08-29 15:00:28,127 INFO L858 garLoopResultBuilder]: For program point L12-15(lines 12 15) no Hoare annotation was computed. [2021-08-29 15:00:28,127 INFO L861 garLoopResultBuilder]: At program point L12-17(lines 11 17) the Hoare annotation is: true [2021-08-29 15:00:28,127 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-08-29 15:00:28,127 INFO L858 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-08-29 15:00:28,127 INFO L858 garLoopResultBuilder]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2021-08-29 15:00:28,127 INFO L858 garLoopResultBuilder]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2021-08-29 15:00:28,127 INFO L858 garLoopResultBuilder]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2021-08-29 15:00:28,127 INFO L858 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2021-08-29 15:00:28,127 INFO L858 garLoopResultBuilder]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2021-08-29 15:00:28,127 INFO L858 garLoopResultBuilder]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2021-08-29 15:00:28,128 INFO L854 garLoopResultBuilder]: At program point L30-2(lines 30 42) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1)))) (or (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~s~0) (+ 2 (* 4 ULTIMATE.start_main_~a~0) (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0))) .cse0) (and (= ULTIMATE.start_main_~t~0 1) .cse0 (= ULTIMATE.start_main_~s~0 1)))) [2021-08-29 15:00:28,128 INFO L858 garLoopResultBuilder]: For program point L30-3(lines 30 42) no Hoare annotation was computed. [2021-08-29 15:00:28,128 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-08-29 15:00:28,130 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 15:00:28,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 03:00:28 BoogieIcfgContainer [2021-08-29 15:00:28,163 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 15:00:28,163 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 15:00:28,164 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 15:00:28,164 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 15:00:28,164 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 03:00:25" (3/4) ... [2021-08-29 15:00:28,166 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-29 15:00:28,171 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-08-29 15:00:28,182 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-29 15:00:28,183 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 15:00:28,183 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 15:00:28,223 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 15:00:28,229 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 15:00:28,229 INFO L158 Benchmark]: Toolchain (without parser) took 3634.08ms. Allocated memory was 52.4MB in the beginning and 75.5MB in the end (delta: 23.1MB). Free memory was 29.6MB in the beginning and 37.4MB in the end (delta: -7.9MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. [2021-08-29 15:00:28,229 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 52.4MB. Free memory is still 34.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 15:00:28,230 INFO L158 Benchmark]: CACSL2BoogieTranslator took 238.98ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 29.3MB in the beginning and 47.2MB in the end (delta: -17.9MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2021-08-29 15:00:28,230 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.31ms. Allocated memory is still 62.9MB. Free memory was 47.2MB in the beginning and 45.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 15:00:28,230 INFO L158 Benchmark]: Boogie Preprocessor took 24.74ms. Allocated memory is still 62.9MB. Free memory was 45.5MB in the beginning and 44.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 15:00:28,230 INFO L158 Benchmark]: RCFGBuilder took 238.36ms. Allocated memory is still 62.9MB. Free memory was 44.4MB in the beginning and 35.7MB in the end (delta: 8.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-08-29 15:00:28,231 INFO L158 Benchmark]: TraceAbstraction took 3022.69ms. Allocated memory was 62.9MB in the beginning and 75.5MB in the end (delta: 12.6MB). Free memory was 35.1MB in the beginning and 40.7MB in the end (delta: -5.7MB). Peak memory consumption was 21.5MB. Max. memory is 16.1GB. [2021-08-29 15:00:28,231 INFO L158 Benchmark]: Witness Printer took 65.29ms. Allocated memory is still 75.5MB. Free memory was 40.7MB in the beginning and 37.4MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 15:00:28,232 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 52.4MB. Free memory is still 34.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 238.98ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 29.3MB in the beginning and 47.2MB in the end (delta: -17.9MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.31ms. Allocated memory is still 62.9MB. Free memory was 47.2MB in the beginning and 45.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 24.74ms. Allocated memory is still 62.9MB. Free memory was 45.5MB in the beginning and 44.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 238.36ms. Allocated memory is still 62.9MB. Free memory was 44.4MB in the beginning and 35.7MB in the end (delta: 8.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 3022.69ms. Allocated memory was 62.9MB in the beginning and 75.5MB in the end (delta: 12.6MB). Free memory was 35.1MB in the beginning and 40.7MB in the end (delta: -5.7MB). Peak memory consumption was 21.5MB. Max. memory is 16.1GB. * Witness Printer took 65.29ms. Allocated memory is still 75.5MB. Free memory was 40.7MB in the beginning and 37.4MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: 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 1 procedures, 33 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 2922.93ms, OverallIterations: 6, TraceHistogramMax: 2, EmptinessCheckTime: 16.14ms, AutomataDifference: 689.12ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 323.72ms, InitialAbstractionConstructionTime: 7.77ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 125 SdHoareTripleChecker+Valid, 519.06ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 125 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 438.13ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 137 mSDsCounter, 75 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 461 IncrementalHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 75 mSolverCounterUnsat, 0 mSDtfsCounter, 461 mSolverCounterSat, 5.38ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 93.33ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=3, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 37.63ms AutomataMinimizationTime, 6 MinimizatonAttempts, 40 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.00ms HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 28 NumberOfFragments, 182 HoareAnnotationTreeSize, 8 FomulaSimplifications, 364 FormulaSimplificationTreeSizeReduction, 130.68ms HoareSimplificationTime, 8 FomulaSimplificationsInter, 522 FormulaSimplificationTreeSizeReductionInter, 187.44ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 26.96ms SsaConstructionTime, 78.10ms SatisfiabilityAnalysisTime, 602.60ms InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 86 ConstructedInterpolants, 0 QuantifiedInterpolants, 440 SizeOfPredicates, 13 NumberOfNonLiveVariables, 276 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 1/12 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 6 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (1 <= cond && t + s == 2 + 4 * a + a * a) && t == 2 * a + 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: ((1 <= cond && t + s == 2 + 4 * a + a * a) && t == 2 * a + 1) || ((t == 1 && t == 2 * a + 1) && s == 1) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (1 <= cond && t + s == 2 + 4 * a + a * a) && t == 2 * a + 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((a == 0 && t == 1) && s == 1) && !(0 == cond)) || ((1 <= cond && t + s == 2 + 4 * a + a * a) && t == 2 * a + 1) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((1 <= cond && t + s == 2 + 4 * a + a * a) && t == 2 * a + 1) || ((t == 1 && s == 1) && !(0 == cond)) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (1 <= cond && t + s == 2 + 4 * a + a * a) && t == 2 * a + 1 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-08-29 15:00:28,267 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...