./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec 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/ps6-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 a7229e8a44b2e722f2959b3a75b7a0e7b1e4a207 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 08:15:37,348 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 08:15:37,351 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 08:15:37,384 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 08:15:37,384 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 08:15:37,387 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 08:15:37,388 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 08:15:37,393 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 08:15:37,394 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 08:15:37,398 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 08:15:37,399 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 08:15:37,406 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 08:15:37,407 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 08:15:37,409 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 08:15:37,410 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 08:15:37,413 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 08:15:37,413 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 08:15:37,414 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 08:15:37,416 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 08:15:37,420 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 08:15:37,422 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 08:15:37,425 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 08:15:37,427 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 08:15:37,428 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 08:15:37,433 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 08:15:37,434 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 08:15:37,434 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 08:15:37,435 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 08:15:37,436 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 08:15:37,436 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 08:15:37,437 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 08:15:37,437 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 08:15:37,438 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 08:15:37,439 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 08:15:37,440 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 08:15:37,440 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 08:15:37,441 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 08:15:37,441 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 08:15:37,441 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 08:15:37,442 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 08:15:37,443 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 08:15:37,444 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 08:15:37,473 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 08:15:37,473 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 08:15:37,473 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 08:15:37,473 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 08:15:37,474 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 08:15:37,475 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 08:15:37,475 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 08:15:37,475 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 08:15:37,475 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 08:15:37,475 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 08:15:37,476 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 08:15:37,476 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 08:15:37,476 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 08:15:37,477 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 08:15:37,477 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 08:15:37,477 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 08:15:37,477 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 08:15:37,477 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 08:15:37,477 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 08:15:37,477 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 08:15:37,478 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 08:15:37,478 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 08:15:37,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 08:15:37,478 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 08:15:37,478 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 08:15:37,478 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 08:15:37,479 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 08:15:37,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 08:15:37,479 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 08:15:37,479 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 08:15:37,479 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a7229e8a44b2e722f2959b3a75b7a0e7b1e4a207 [2021-08-26 08:15:37,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 08:15:37,771 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 08:15:37,773 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 08:15:37,774 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 08:15:37,775 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 08:15:37,775 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound5.c [2021-08-26 08:15:37,832 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7628e3222/181749d2e17a449f9f685047ce9f711b/FLAG786c91cbe [2021-08-26 08:15:38,201 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 08:15:38,201 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound5.c [2021-08-26 08:15:38,219 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7628e3222/181749d2e17a449f9f685047ce9f711b/FLAG786c91cbe [2021-08-26 08:15:38,233 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7628e3222/181749d2e17a449f9f685047ce9f711b [2021-08-26 08:15:38,235 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 08:15:38,238 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 08:15:38,242 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 08:15:38,242 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 08:15:38,245 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 08:15:38,246 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 08:15:38" (1/1) ... [2021-08-26 08:15:38,247 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@781ef95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:15:38, skipping insertion in model container [2021-08-26 08:15:38,247 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 08:15:38" (1/1) ... [2021-08-26 08:15:38,253 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 08:15:38,267 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 08:15:38,406 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/ps6-ll_valuebound5.c[458,471] [2021-08-26 08:15:38,430 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 08:15:38,436 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 08:15:38,455 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/ps6-ll_valuebound5.c[458,471] [2021-08-26 08:15:38,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 08:15:38,498 INFO L208 MainTranslator]: Completed translation [2021-08-26 08:15:38,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:15:38 WrapperNode [2021-08-26 08:15:38,499 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 08:15:38,500 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 08:15:38,500 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 08:15:38,500 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 08:15:38,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:15:38" (1/1) ... [2021-08-26 08:15:38,514 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:15:38" (1/1) ... [2021-08-26 08:15:38,531 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 08:15:38,532 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 08:15:38,532 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 08:15:38,533 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 08:15:38,538 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:15:38" (1/1) ... [2021-08-26 08:15:38,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:15:38" (1/1) ... [2021-08-26 08:15:38,550 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:15:38" (1/1) ... [2021-08-26 08:15:38,551 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:15:38" (1/1) ... [2021-08-26 08:15:38,557 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:15:38" (1/1) ... [2021-08-26 08:15:38,563 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:15:38" (1/1) ... [2021-08-26 08:15:38,567 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:15:38" (1/1) ... [2021-08-26 08:15:38,571 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 08:15:38,572 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 08:15:38,573 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 08:15:38,573 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 08:15:38,574 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:15:38" (1/1) ... [2021-08-26 08:15:38,579 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 08:15:38,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 08:15:38,600 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) [2021-08-26 08:15:38,627 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 [2021-08-26 08:15:38,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 08:15:38,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 08:15:38,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 08:15:38,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 08:15:38,925 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 08:15:38,926 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-08-26 08:15:38,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 08:15:38 BoogieIcfgContainer [2021-08-26 08:15:38,927 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 08:15:38,928 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 08:15:38,928 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 08:15:38,930 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 08:15:38,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 08:15:38" (1/3) ... [2021-08-26 08:15:38,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fea0ce9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 08:15:38, skipping insertion in model container [2021-08-26 08:15:38,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:15:38" (2/3) ... [2021-08-26 08:15:38,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fea0ce9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 08:15:38, skipping insertion in model container [2021-08-26 08:15:38,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 08:15:38" (3/3) ... [2021-08-26 08:15:38,945 INFO L111 eAbstractionObserver]: Analyzing ICFG ps6-ll_valuebound5.c [2021-08-26 08:15:38,949 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 08:15:38,951 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-08-26 08:15:38,990 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 08:15:38,997 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 [2021-08-26 08:15:38,998 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-08-26 08:15:39,011 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 22 states have internal predecessors, (30), 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) [2021-08-26 08:15:39,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-26 08:15:39,015 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 08:15:39,016 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 08:15:39,016 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 08:15:39,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 08:15:39,021 INFO L82 PathProgramCache]: Analyzing trace with hash -594062832, now seen corresponding path program 1 times [2021-08-26 08:15:39,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 08:15:39,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416231501] [2021-08-26 08:15:39,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:15:39,029 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 08:15:39,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 08:15:39,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 08:15:39,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 08:15:39,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416231501] [2021-08-26 08:15:39,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416231501] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 08:15:39,154 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 08:15:39,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 08:15:39,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174121848] [2021-08-26 08:15:39,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 08:15:39,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 08:15:39,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 08:15:39,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 08:15:39,172 INFO L87 Difference]: Start difference. First operand has 23 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 22 states have internal predecessors, (30), 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 4.5) internal successors, (9), 2 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) [2021-08-26 08:15:39,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 08:15:39,185 INFO L93 Difference]: Finished difference Result 43 states and 56 transitions. [2021-08-26 08:15:39,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 08:15:39,186 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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 [2021-08-26 08:15:39,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 08:15:39,192 INFO L225 Difference]: With dead ends: 43 [2021-08-26 08:15:39,192 INFO L226 Difference]: Without dead ends: 19 [2021-08-26 08:15:39,195 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 08:15:39,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-08-26 08:15:39,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-08-26 08:15:39,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 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) [2021-08-26 08:15:39,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2021-08-26 08:15:39,231 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 9 [2021-08-26 08:15:39,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 08:15:39,232 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2021-08-26 08:15:39,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2021-08-26 08:15:39,233 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2021-08-26 08:15:39,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-26 08:15:39,233 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 08:15:39,233 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 08:15:39,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 08:15:39,235 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 08:15:39,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 08:15:39,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1182791572, now seen corresponding path program 1 times [2021-08-26 08:15:39,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 08:15:39,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021710030] [2021-08-26 08:15:39,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:15:39,238 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 08:15:39,270 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 08:15:39,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1861911396] [2021-08-26 08:15:39,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:15:39,271 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 08:15:39,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 08:15:39,273 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) [2021-08-26 08:15:39,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-26 08:15:39,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 08:15:39,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-26 08:15:39,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 08:15:39,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 08:15:39,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 08:15:39,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021710030] [2021-08-26 08:15:39,487 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 08:15:39,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861911396] [2021-08-26 08:15:39,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861911396] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 08:15:39,487 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 08:15:39,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 08:15:39,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178729163] [2021-08-26 08:15:39,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 08:15:39,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 08:15:39,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 08:15:39,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 08:15:39,497 INFO L87 Difference]: Start difference. First operand 19 states and 19 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) [2021-08-26 08:15:39,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 08:15:39,567 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2021-08-26 08:15:39,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 08:15:39,568 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 [2021-08-26 08:15:39,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 08:15:39,570 INFO L225 Difference]: With dead ends: 33 [2021-08-26 08:15:39,570 INFO L226 Difference]: Without dead ends: 23 [2021-08-26 08:15:39,571 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 08:15:39,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-08-26 08:15:39,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2021-08-26 08:15:39,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 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) [2021-08-26 08:15:39,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2021-08-26 08:15:39,578 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 9 [2021-08-26 08:15:39,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 08:15:39,578 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2021-08-26 08:15:39,579 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) [2021-08-26 08:15:39,579 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2021-08-26 08:15:39,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-26 08:15:39,579 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 08:15:39,580 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 08:15:39,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-26 08:15:39,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 08:15:39,793 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 08:15:39,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 08:15:39,794 INFO L82 PathProgramCache]: Analyzing trace with hash 636965506, now seen corresponding path program 1 times [2021-08-26 08:15:39,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 08:15:39,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842793022] [2021-08-26 08:15:39,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:15:39,794 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 08:15:39,807 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 08:15:39,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [594534060] [2021-08-26 08:15:39,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:15:39,810 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 08:15:39,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 08:15:39,811 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) [2021-08-26 08:15:39,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-26 08:15:39,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 08:15:39,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-26 08:15:39,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 08:15:39,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 08:15:39,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 08:15:39,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842793022] [2021-08-26 08:15:39,977 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 08:15:39,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594534060] [2021-08-26 08:15:39,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594534060] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 08:15:39,979 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 08:15:39,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-08-26 08:15:39,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815472312] [2021-08-26 08:15:39,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 08:15:39,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 08:15:39,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 08:15:39,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-26 08:15:39,981 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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) [2021-08-26 08:15:40,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 08:15:40,044 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2021-08-26 08:15:40,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-26 08:15:40,044 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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 12 [2021-08-26 08:15:40,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 08:15:40,046 INFO L225 Difference]: With dead ends: 36 [2021-08-26 08:15:40,046 INFO L226 Difference]: Without dead ends: 32 [2021-08-26 08:15:40,047 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 26.0ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-26 08:15:40,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-08-26 08:15:40,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 27. [2021-08-26 08:15:40,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 26 states have internal predecessors, (28), 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) [2021-08-26 08:15:40,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2021-08-26 08:15:40,055 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 12 [2021-08-26 08:15:40,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 08:15:40,055 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-08-26 08:15:40,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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) [2021-08-26 08:15:40,056 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2021-08-26 08:15:40,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-26 08:15:40,057 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 08:15:40,057 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 08:15:40,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-26 08:15:40,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-08-26 08:15:40,269 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 08:15:40,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 08:15:40,269 INFO L82 PathProgramCache]: Analyzing trace with hash 678815956, now seen corresponding path program 2 times [2021-08-26 08:15:40,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 08:15:40,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490313174] [2021-08-26 08:15:40,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:15:40,270 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 08:15:40,280 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 08:15:40,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1257116255] [2021-08-26 08:15:40,280 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 08:15:40,281 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 08:15:40,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 08:15:40,281 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) [2021-08-26 08:15:40,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-26 08:15:40,364 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 08:15:40,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 08:15:40,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 15 conjunts are in the unsatisfiable core [2021-08-26 08:15:40,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 08:15:40,546 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 08:15:40,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 08:15:40,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490313174] [2021-08-26 08:15:40,548 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 08:15:40,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257116255] [2021-08-26 08:15:40,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257116255] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 08:15:40,549 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 08:15:40,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-08-26 08:15:40,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990902819] [2021-08-26 08:15:40,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 08:15:40,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 08:15:40,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 08:15:40,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-26 08:15:40,553 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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) [2021-08-26 08:15:40,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 08:15:40,632 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2021-08-26 08:15:40,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-26 08:15:40,633 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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 15 [2021-08-26 08:15:40,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 08:15:40,633 INFO L225 Difference]: With dead ends: 45 [2021-08-26 08:15:40,633 INFO L226 Difference]: Without dead ends: 41 [2021-08-26 08:15:40,634 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 39.4ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-08-26 08:15:40,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-08-26 08:15:40,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 30. [2021-08-26 08:15:40,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 29 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) [2021-08-26 08:15:40,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2021-08-26 08:15:40,637 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 15 [2021-08-26 08:15:40,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 08:15:40,637 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2021-08-26 08:15:40,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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) [2021-08-26 08:15:40,638 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2021-08-26 08:15:40,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-26 08:15:40,638 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 08:15:40,638 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 08:15:40,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-26 08:15:40,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 08:15:40,845 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 08:15:40,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 08:15:40,846 INFO L82 PathProgramCache]: Analyzing trace with hash -531865812, now seen corresponding path program 1 times [2021-08-26 08:15:40,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 08:15:40,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326613838] [2021-08-26 08:15:40,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:15:40,846 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 08:15:40,853 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 08:15:40,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [633833225] [2021-08-26 08:15:40,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:15:40,853 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 08:15:40,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 08:15:40,863 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) [2021-08-26 08:15:40,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-26 08:15:40,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 08:15:40,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-26 08:15:40,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 08:15:41,110 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 08:15:41,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 08:15:41,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326613838] [2021-08-26 08:15:41,110 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 08:15:41,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633833225] [2021-08-26 08:15:41,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633833225] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 08:15:41,110 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 08:15:41,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-08-26 08:15:41,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592660510] [2021-08-26 08:15:41,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 08:15:41,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 08:15:41,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 08:15:41,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-26 08:15:41,112 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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) [2021-08-26 08:15:41,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 08:15:41,178 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2021-08-26 08:15:41,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 08:15:41,179 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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 17 [2021-08-26 08:15:41,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 08:15:41,182 INFO L225 Difference]: With dead ends: 36 [2021-08-26 08:15:41,182 INFO L226 Difference]: Without dead ends: 30 [2021-08-26 08:15:41,182 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.3ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-08-26 08:15:41,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-08-26 08:15:41,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-08-26 08:15:41,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 29 states have internal predecessors, (31), 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) [2021-08-26 08:15:41,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2021-08-26 08:15:41,193 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 17 [2021-08-26 08:15:41,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 08:15:41,193 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2021-08-26 08:15:41,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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) [2021-08-26 08:15:41,193 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2021-08-26 08:15:41,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-26 08:15:41,194 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 08:15:41,194 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 08:15:41,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-26 08:15:41,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 08:15:41,409 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 08:15:41,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 08:15:41,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1905056066, now seen corresponding path program 3 times [2021-08-26 08:15:41,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 08:15:41,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147612529] [2021-08-26 08:15:41,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:15:41,410 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 08:15:41,416 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 08:15:41,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [262576850] [2021-08-26 08:15:41,417 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 08:15:41,417 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 08:15:41,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 08:15:41,418 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 08:15:41,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-26 08:15:42,360 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-08-26 08:15:42,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 08:15:42,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-26 08:15:42,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 08:15:42,578 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-08-26 08:15:42,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 08:15:42,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147612529] [2021-08-26 08:15:42,579 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 08:15:42,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262576850] [2021-08-26 08:15:42,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262576850] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 08:15:42,579 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 08:15:42,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-08-26 08:15:42,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385043958] [2021-08-26 08:15:42,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 08:15:42,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 08:15:42,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 08:15:42,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-26 08:15:42,581 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2021-08-26 08:15:42,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 08:15:42,727 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2021-08-26 08:15:42,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 08:15:42,728 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 18 [2021-08-26 08:15:42,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 08:15:42,728 INFO L225 Difference]: With dead ends: 30 [2021-08-26 08:15:42,728 INFO L226 Difference]: Without dead ends: 26 [2021-08-26 08:15:42,729 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 62.3ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-26 08:15:42,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-08-26 08:15:42,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 21. [2021-08-26 08:15:42,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 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) [2021-08-26 08:15:42,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2021-08-26 08:15:42,732 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2021-08-26 08:15:42,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 08:15:42,732 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2021-08-26 08:15:42,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2021-08-26 08:15:42,732 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2021-08-26 08:15:42,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-26 08:15:42,733 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 08:15:42,733 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 08:15:42,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-26 08:15:42,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 08:15:42,939 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 08:15:42,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 08:15:42,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1063840794, now seen corresponding path program 2 times [2021-08-26 08:15:42,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 08:15:42,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044615328] [2021-08-26 08:15:42,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:15:42,940 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 08:15:42,947 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 08:15:42,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1166626440] [2021-08-26 08:15:42,949 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 08:15:42,949 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 08:15:42,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 08:15:42,950 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 08:15:42,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-08-26 08:15:43,095 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 08:15:43,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 08:15:43,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 16 conjunts are in the unsatisfiable core [2021-08-26 08:15:43,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 08:15:43,327 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 08:15:43,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 08:15:43,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044615328] [2021-08-26 08:15:43,327 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 08:15:43,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166626440] [2021-08-26 08:15:43,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166626440] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 08:15:43,327 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 08:15:43,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-08-26 08:15:43,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265362963] [2021-08-26 08:15:43,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 08:15:43,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 08:15:43,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 08:15:43,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-26 08:15:43,328 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 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) [2021-08-26 08:15:43,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 08:15:43,419 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2021-08-26 08:15:43,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-26 08:15:43,420 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 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 20 [2021-08-26 08:15:43,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 08:15:43,420 INFO L225 Difference]: With dead ends: 30 [2021-08-26 08:15:43,420 INFO L226 Difference]: Without dead ends: 24 [2021-08-26 08:15:43,421 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.4ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-08-26 08:15:43,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-08-26 08:15:43,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-08-26 08:15:43,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 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) [2021-08-26 08:15:43,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2021-08-26 08:15:43,429 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 20 [2021-08-26 08:15:43,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 08:15:43,429 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2021-08-26 08:15:43,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 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) [2021-08-26 08:15:43,429 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2021-08-26 08:15:43,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-26 08:15:43,430 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 08:15:43,430 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 08:15:43,436 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-08-26 08:15:43,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 08:15:43,640 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 08:15:43,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 08:15:43,640 INFO L82 PathProgramCache]: Analyzing trace with hash 2061308012, now seen corresponding path program 3 times [2021-08-26 08:15:43,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 08:15:43,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971705996] [2021-08-26 08:15:43,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:15:43,640 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 08:15:43,647 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 08:15:43,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [364480646] [2021-08-26 08:15:43,648 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 08:15:43,648 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 08:15:43,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 08:15:43,649 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 08:15:43,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-08-26 08:15:43,998 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-08-26 08:15:43,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 08:15:44,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 20 conjunts are in the unsatisfiable core [2021-08-26 08:15:44,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 08:15:44,209 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 08:15:44,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 08:15:44,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971705996] [2021-08-26 08:15:44,210 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 08:15:44,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364480646] [2021-08-26 08:15:44,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364480646] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 08:15:44,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 08:15:44,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-08-26 08:15:44,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905861637] [2021-08-26 08:15:44,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 08:15:44,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 08:15:44,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 08:15:44,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-26 08:15:44,212 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 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) [2021-08-26 08:15:44,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 08:15:44,324 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2021-08-26 08:15:44,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-26 08:15:44,325 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 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 23 [2021-08-26 08:15:44,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 08:15:44,325 INFO L225 Difference]: With dead ends: 33 [2021-08-26 08:15:44,325 INFO L226 Difference]: Without dead ends: 27 [2021-08-26 08:15:44,326 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.8ms TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-08-26 08:15:44,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-08-26 08:15:44,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-08-26 08:15:44,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 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) [2021-08-26 08:15:44,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2021-08-26 08:15:44,329 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 23 [2021-08-26 08:15:44,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 08:15:44,329 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2021-08-26 08:15:44,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 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) [2021-08-26 08:15:44,329 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2021-08-26 08:15:44,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-26 08:15:44,329 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 08:15:44,330 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 08:15:44,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-08-26 08:15:44,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 08:15:44,536 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 08:15:44,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 08:15:44,536 INFO L82 PathProgramCache]: Analyzing trace with hash 728478426, now seen corresponding path program 4 times [2021-08-26 08:15:44,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 08:15:44,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339001205] [2021-08-26 08:15:44,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:15:44,537 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 08:15:44,544 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 08:15:44,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1902277630] [2021-08-26 08:15:44,544 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-26 08:15:44,544 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 08:15:44,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 08:15:44,547 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 08:15:44,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-08-26 08:15:44,654 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-26 08:15:44,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 08:15:44,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 24 conjunts are in the unsatisfiable core [2021-08-26 08:15:44,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 08:15:44,880 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 08:15:44,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 08:15:44,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339001205] [2021-08-26 08:15:44,880 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 08:15:44,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902277630] [2021-08-26 08:15:44,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902277630] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 08:15:44,881 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 08:15:44,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-08-26 08:15:44,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504199344] [2021-08-26 08:15:44,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-26 08:15:44,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 08:15:44,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-26 08:15:44,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-26 08:15:44,882 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 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) [2021-08-26 08:15:44,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 08:15:44,984 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2021-08-26 08:15:44,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-26 08:15:44,985 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 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 26 [2021-08-26 08:15:44,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 08:15:44,986 INFO L225 Difference]: With dead ends: 36 [2021-08-26 08:15:44,987 INFO L226 Difference]: Without dead ends: 30 [2021-08-26 08:15:44,987 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.2ms TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-08-26 08:15:44,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-08-26 08:15:44,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-08-26 08:15:44,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.0344827586206897) internal successors, (30), 29 states have internal predecessors, (30), 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) [2021-08-26 08:15:44,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2021-08-26 08:15:44,997 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 26 [2021-08-26 08:15:44,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 08:15:44,997 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2021-08-26 08:15:44,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 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) [2021-08-26 08:15:44,998 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2021-08-26 08:15:44,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-26 08:15:44,998 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 08:15:44,999 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 08:15:45,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-08-26 08:15:45,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-08-26 08:15:45,221 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 08:15:45,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 08:15:45,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1374933420, now seen corresponding path program 5 times [2021-08-26 08:15:45,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 08:15:45,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392580819] [2021-08-26 08:15:45,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:15:45,221 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 08:15:45,228 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 08:15:45,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [819014959] [2021-08-26 08:15:45,228 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-26 08:15:45,228 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 08:15:45,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 08:15:45,236 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 08:15:45,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-08-26 08:15:45,572 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-08-26 08:15:45,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 08:15:45,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 28 conjunts are in the unsatisfiable core [2021-08-26 08:15:45,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 08:15:45,850 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 08:15:45,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 08:15:45,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392580819] [2021-08-26 08:15:45,850 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 08:15:45,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819014959] [2021-08-26 08:15:45,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819014959] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 08:15:45,850 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 08:15:45,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-08-26 08:15:45,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359632390] [2021-08-26 08:15:45,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-26 08:15:45,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 08:15:45,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-26 08:15:45,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-08-26 08:15:45,851 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 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) [2021-08-26 08:15:45,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 08:15:45,990 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2021-08-26 08:15:45,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-26 08:15:45,990 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 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) Word has length 29 [2021-08-26 08:15:45,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 08:15:45,993 INFO L225 Difference]: With dead ends: 39 [2021-08-26 08:15:45,993 INFO L226 Difference]: Without dead ends: 33 [2021-08-26 08:15:45,994 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 69.3ms TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-08-26 08:15:45,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-08-26 08:15:46,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-08-26 08:15:46,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.03125) internal successors, (33), 32 states have internal predecessors, (33), 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) [2021-08-26 08:15:46,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2021-08-26 08:15:46,013 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 29 [2021-08-26 08:15:46,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 08:15:46,014 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2021-08-26 08:15:46,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 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) [2021-08-26 08:15:46,014 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2021-08-26 08:15:46,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-08-26 08:15:46,018 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 08:15:46,018 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 08:15:46,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-08-26 08:15:46,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-08-26 08:15:46,219 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 08:15:46,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 08:15:46,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1282304410, now seen corresponding path program 6 times [2021-08-26 08:15:46,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 08:15:46,219 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692540408] [2021-08-26 08:15:46,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:15:46,220 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 08:15:46,228 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 08:15:46,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1811722246] [2021-08-26 08:15:46,229 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-26 08:15:46,229 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 08:15:46,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 08:15:46,249 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 08:15:46,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-08-26 08:15:47,576 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-08-26 08:15:47,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 08:15:47,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-26 08:15:47,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 08:15:47,888 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 08:15:47,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 08:15:47,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692540408] [2021-08-26 08:15:47,888 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 08:15:47,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811722246] [2021-08-26 08:15:47,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811722246] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 08:15:47,891 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 08:15:47,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-26 08:15:47,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666758667] [2021-08-26 08:15:47,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-26 08:15:47,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 08:15:47,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-26 08:15:47,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-08-26 08:15:47,893 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 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) [2021-08-26 08:15:48,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 08:15:48,046 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2021-08-26 08:15:48,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-26 08:15:48,047 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 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) Word has length 32 [2021-08-26 08:15:48,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 08:15:48,047 INFO L225 Difference]: With dead ends: 33 [2021-08-26 08:15:48,047 INFO L226 Difference]: Without dead ends: 0 [2021-08-26 08:15:48,047 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 193.3ms TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2021-08-26 08:15:48,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-26 08:15:48,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-26 08:15:48,048 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) [2021-08-26 08:15:48,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-26 08:15:48,048 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2021-08-26 08:15:48,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 08:15:48,048 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-26 08:15:48,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 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) [2021-08-26 08:15:48,048 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-26 08:15:48,049 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-26 08:15:48,050 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 08:15:48,051 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 08:15:48,051 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 08:15:48,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-08-26 08:15:48,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-08-26 08:15:48,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-26 08:15:48,261 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 08:15:48,305 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 08:15:48,306 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 08:15:48,307 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 08:15:48,330 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 08:15:48,727 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-08-26 08:15:48,727 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 12) no Hoare annotation was computed. [2021-08-26 08:15:48,727 INFO L857 garLoopResultBuilder]: For program point L11-1(lines 11 12) no Hoare annotation was computed. [2021-08-26 08:15:48,727 INFO L857 garLoopResultBuilder]: For program point L11-2(lines 11 12) no Hoare annotation was computed. [2021-08-26 08:15:48,727 INFO L857 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2021-08-26 08:15:48,727 INFO L857 garLoopResultBuilder]: For program point L7-2(line 7) no Hoare annotation was computed. [2021-08-26 08:15:48,727 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-26 08:15:48,727 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-26 08:15:48,727 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-26 08:15:48,727 INFO L853 garLoopResultBuilder]: At program point L28-2(lines 28 37) the Hoare annotation is: (let ((.cse3 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (let ((.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse4 (= (+ (* 6 .cse3) (* 5 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) (* 2 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (+ (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (* 12 ULTIMATE.start_main_~x~0)))) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse2 (<= ULTIMATE.start_main_~k~0 5))) (or (and .cse0 (< 0 ULTIMATE.start_main_~k~0) .cse1 (= ULTIMATE.start_main_~y~0 1) .cse2 (= ULTIMATE.start_main_~c~0 1) (= ULTIMATE.start_main_~x~0 .cse3)) (and .cse4 .cse0 (= ULTIMATE.start_main_~y~0 3) .cse1 .cse2 (= ULTIMATE.start_main_~c~0 3) (< 2 ULTIMATE.start_main_~k~0)) (and .cse4 .cse0 (< 4 ULTIMATE.start_main_~k~0) (<= 5 ULTIMATE.start_main_~c~0) (= ULTIMATE.start_main_~y~0 5) (<= ULTIMATE.start_main_~c~0 5) .cse1 .cse2) (and (= ULTIMATE.start_main_~c~0 2) .cse4 .cse0 (< 1 ULTIMATE.start_main_~k~0) .cse1 .cse2 (= ULTIMATE.start_main_~y~0 2)) (and .cse4 .cse0 (< 3 ULTIMATE.start_main_~k~0) .cse1 .cse2 (= ULTIMATE.start_main_~y~0 4) (= ULTIMATE.start_main_~c~0 4)) (and (= ULTIMATE.start_main_~y~0 0) (<= 0 ULTIMATE.start_main_~k~0) .cse4 .cse0 .cse2 (= ULTIMATE.start_main_~c~0 0))))) [2021-08-26 08:15:48,727 INFO L857 garLoopResultBuilder]: For program point L28-3(lines 28 37) no Hoare annotation was computed. [2021-08-26 08:15:48,727 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-08-26 08:15:48,727 INFO L860 garLoopResultBuilder]: At program point L41(lines 17 42) the Hoare annotation is: true [2021-08-26 08:15:48,728 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-26 08:15:48,728 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-08-26 08:15:48,728 INFO L857 garLoopResultBuilder]: For program point L10(lines 10 13) no Hoare annotation was computed. [2021-08-26 08:15:48,728 INFO L853 garLoopResultBuilder]: At program point L10-2(lines 31 32) the Hoare annotation is: (let ((.cse3 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (let ((.cse4 (= (+ (* 6 .cse3) (* 5 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) (* 2 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (+ (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (* 12 ULTIMATE.start_main_~x~0)))) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (<= ULTIMATE.start_main_~k~0 5))) (or (and .cse0 (< 0 ULTIMATE.start_main_~k~0) .cse1 (= ULTIMATE.start_main_~y~0 1) .cse2 (= ULTIMATE.start_main_~c~0 1) (= ULTIMATE.start_main_~x~0 .cse3)) (and .cse4 .cse0 (= ULTIMATE.start_main_~y~0 3) .cse1 .cse2 (= ULTIMATE.start_main_~c~0 3) (< 2 ULTIMATE.start_main_~k~0)) (and .cse4 .cse0 (< 4 ULTIMATE.start_main_~k~0) (<= 5 ULTIMATE.start_main_~c~0) (= ULTIMATE.start_main_~y~0 5) (<= ULTIMATE.start_main_~c~0 5) .cse1 .cse2) (and (= ULTIMATE.start_main_~c~0 2) .cse4 .cse0 (< 1 ULTIMATE.start_main_~k~0) .cse1 .cse2 (= ULTIMATE.start_main_~y~0 2)) (and (= ULTIMATE.start_main_~y~0 0) (<= 0 ULTIMATE.start_main_~k~0) .cse4 .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~c~0 0)) (and .cse4 .cse0 (< 3 ULTIMATE.start_main_~k~0) .cse1 .cse2 (= ULTIMATE.start_main_~y~0 4) (= ULTIMATE.start_main_~c~0 4))))) [2021-08-26 08:15:48,728 INFO L857 garLoopResultBuilder]: For program point L10-3(lines 10 13) no Hoare annotation was computed. [2021-08-26 08:15:48,728 INFO L857 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2021-08-26 08:15:48,728 INFO L857 garLoopResultBuilder]: For program point L6-1(lines 6 8) no Hoare annotation was computed. [2021-08-26 08:15:48,728 INFO L853 garLoopResultBuilder]: At program point L10-5(lines 9 15) the Hoare annotation is: (let ((.cse0 (= (+ (* 6 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) (* 5 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) (* 2 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (+ (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (* 12 ULTIMATE.start_main_~x~0)))) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond))) (or (and (<= ULTIMATE.start_main_~c~0 2) .cse0 (<= ULTIMATE.start_main_~k~0 2) (< 1 ULTIMATE.start_main_~k~0) .cse1 (= ULTIMATE.start_main_~y~0 2)) (and (<= ULTIMATE.start_main_~c~0 4) .cse0 (< 3 ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~k~0 4) .cse1 (= ULTIMATE.start_main_~y~0 4)) (and (= ULTIMATE.start_main_~y~0 0) (= ULTIMATE.start_main_~x~0 0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (and .cse0 (= ULTIMATE.start_main_~y~0 3) (<= ULTIMATE.start_main_~c~0 3) .cse1 (< 2 ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~k~0 3)) (and (< 0 ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~k~0 1) (= ULTIMATE.start_main_~y~0 1) (<= ULTIMATE.start_main_~c~0 1)) (and .cse0 (< 4 ULTIMATE.start_main_~k~0) (= ULTIMATE.start_main_~y~0 5) (<= ULTIMATE.start_main_~c~0 5) .cse1 (<= ULTIMATE.start_main_~k~0 5)))) [2021-08-26 08:15:48,728 INFO L857 garLoopResultBuilder]: For program point L10-6(lines 10 13) no Hoare annotation was computed. [2021-08-26 08:15:48,729 INFO L860 garLoopResultBuilder]: At program point L10-8(lines 9 15) the Hoare annotation is: true [2021-08-26 08:15:48,732 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 08:15:48,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 08:15:48 BoogieIcfgContainer [2021-08-26 08:15:48,755 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 08:15:48,756 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 08:15:48,756 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 08:15:48,756 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 08:15:48,756 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 08:15:38" (3/4) ... [2021-08-26 08:15:48,763 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-26 08:15:48,770 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-08-26 08:15:48,770 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-26 08:15:48,770 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 08:15:48,771 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 08:15:48,808 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 08:15:48,810 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 08:15:48,812 INFO L168 Benchmark]: Toolchain (without parser) took 10573.67 ms. Allocated memory was 56.6 MB in the beginning and 100.7 MB in the end (delta: 44.0 MB). Free memory was 41.4 MB in the beginning and 50.5 MB in the end (delta: -9.1 MB). Peak memory consumption was 34.8 MB. Max. memory is 16.1 GB. [2021-08-26 08:15:48,813 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 46.1 MB. Free memory was 28.3 MB in the beginning and 28.3 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 08:15:48,813 INFO L168 Benchmark]: CACSL2BoogieTranslator took 257.61 ms. Allocated memory is still 56.6 MB. Free memory was 41.3 MB in the beginning and 40.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-26 08:15:48,813 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.91 ms. Allocated memory is still 56.6 MB. Free memory was 40.2 MB in the beginning and 38.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 08:15:48,814 INFO L168 Benchmark]: Boogie Preprocessor took 39.25 ms. Allocated memory is still 56.6 MB. Free memory was 38.6 MB in the beginning and 37.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 08:15:48,814 INFO L168 Benchmark]: RCFGBuilder took 355.09 ms. Allocated memory is still 56.6 MB. Free memory was 37.6 MB in the beginning and 37.4 MB in the end (delta: 194.9 kB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. [2021-08-26 08:15:48,814 INFO L168 Benchmark]: TraceAbstraction took 9826.82 ms. Allocated memory was 56.6 MB in the beginning and 100.7 MB in the end (delta: 44.0 MB). Free memory was 36.8 MB in the beginning and 53.7 MB in the end (delta: -16.9 MB). Peak memory consumption was 58.7 MB. Max. memory is 16.1 GB. [2021-08-26 08:15:48,815 INFO L168 Benchmark]: Witness Printer took 54.87 ms. Allocated memory is still 100.7 MB. Free memory was 53.7 MB in the beginning and 50.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-26 08:15:48,816 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 46.1 MB. Free memory was 28.3 MB in the beginning and 28.3 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 257.61 ms. Allocated memory is still 56.6 MB. Free memory was 41.3 MB in the beginning and 40.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.91 ms. Allocated memory is still 56.6 MB. Free memory was 40.2 MB in the beginning and 38.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.25 ms. Allocated memory is still 56.6 MB. Free memory was 38.6 MB in the beginning and 37.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 355.09 ms. Allocated memory is still 56.6 MB. Free memory was 37.6 MB in the beginning and 37.4 MB in the end (delta: 194.9 kB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9826.82 ms. Allocated memory was 56.6 MB in the beginning and 100.7 MB in the end (delta: 44.0 MB). Free memory was 36.8 MB in the beginning and 53.7 MB in the end (delta: -16.9 MB). Peak memory consumption was 58.7 MB. Max. memory is 16.1 GB. * Witness Printer took 54.87 ms. Allocated memory is still 100.7 MB. Free memory was 53.7 MB in the beginning and 50.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 12]: 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, 23 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 9742.3ms, OverallIterations: 11, TraceHistogramMax: 7, EmptinessCheckTime: 16.2ms, AutomataDifference: 1093.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 470.6ms, InitialAbstractionConstructionTime: 9.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 159 SDtfs, 76 SDslu, 449 SDs, 0 SdLazy, 613 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 512.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 218 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 604.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=10, InterpolantAutomatonStates: 77, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 84.6ms AutomataMinimizationTime, 11 MinimizatonAttempts, 22 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 25 NumberOfFragments, 801 HoareAnnotationTreeSize, 5 FomulaSimplifications, 632 FormulaSimplificationTreeSizeReduction, 76.9ms HoareSimplificationTime, 5 FomulaSimplificationsInter, 165 FormulaSimplificationTreeSizeReductionInter, 387.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 65.9ms SsaConstructionTime, 2729.7ms SatisfiabilityAnalysisTime, 2138.9ms InterpolantComputationTime, 210 NumberOfCodeBlocks, 198 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 199 ConstructedInterpolants, 0 QuantifiedInterpolants, 1220 SizeOfPredicates, 36 NumberOfNonLiveVariables, 893 ConjunctsInSsa, 157 ConjunctsInUnsatCore, 11 InterpolantComputations, 3 PerfectInterpolantSequences, 77/192 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 3 specifications checked. All of them hold - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: ((((((((((cond == 1 && 0 < k) && 1 == cond) && y == 1) && k <= 5) && c == 1) && x == y * y * y * y * y) || ((((((6 * (y * y * y * y * y) + 5 * (y * y * y * y) + 2 * (y * y * y * y * y * y) == y * y + 12 * x && cond == 1) && y == 3) && 1 == cond) && k <= 5) && c == 3) && 2 < k)) || (((((((6 * (y * y * y * y * y) + 5 * (y * y * y * y) + 2 * (y * y * y * y * y * y) == y * y + 12 * x && cond == 1) && 4 < k) && 5 <= c) && y == 5) && c <= 5) && 1 == cond) && k <= 5)) || ((((((c == 2 && 6 * (y * y * y * y * y) + 5 * (y * y * y * y) + 2 * (y * y * y * y * y * y) == y * y + 12 * x) && cond == 1) && 1 < k) && 1 == cond) && k <= 5) && y == 2)) || ((((((y == 0 && 0 <= k) && 6 * (y * y * y * y * y) + 5 * (y * y * y * y) + 2 * (y * y * y * y * y * y) == y * y + 12 * x) && cond == 1) && 1 == cond) && k <= 5) && c == 0)) || ((((((6 * (y * y * y * y * y) + 5 * (y * y * y * y) + 2 * (y * y * y * y * y * y) == y * y + 12 * x && cond == 1) && 3 < k) && 1 == cond) && k <= 5) && y == 4) && c == 4) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: ((((((((((cond == 1 && 0 < k) && 1 == cond) && y == 1) && k <= 5) && c == 1) && x == y * y * y * y * y) || ((((((6 * (y * y * y * y * y) + 5 * (y * y * y * y) + 2 * (y * y * y * y * y * y) == y * y + 12 * x && cond == 1) && y == 3) && 1 == cond) && k <= 5) && c == 3) && 2 < k)) || (((((((6 * (y * y * y * y * y) + 5 * (y * y * y * y) + 2 * (y * y * y * y * y * y) == y * y + 12 * x && cond == 1) && 4 < k) && 5 <= c) && y == 5) && c <= 5) && 1 == cond) && k <= 5)) || ((((((c == 2 && 6 * (y * y * y * y * y) + 5 * (y * y * y * y) + 2 * (y * y * y * y * y * y) == y * y + 12 * x) && cond == 1) && 1 < k) && 1 == cond) && k <= 5) && y == 2)) || ((((((6 * (y * y * y * y * y) + 5 * (y * y * y * y) + 2 * (y * y * y * y * y * y) == y * y + 12 * x && cond == 1) && 3 < k) && 1 == cond) && k <= 5) && y == 4) && c == 4)) || (((((y == 0 && 0 <= k) && 6 * (y * y * y * y * y) + 5 * (y * y * y * y) + 2 * (y * y * y * y * y * y) == y * y + 12 * x) && cond == 1) && k <= 5) && c == 0) - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: (((((((((c <= 2 && 6 * (y * y * y * y * y) + 5 * (y * y * y * y) + 2 * (y * y * y * y * y * y) == y * y + 12 * x) && k <= 2) && 1 < k) && 1 == cond) && y == 2) || (((((c <= 4 && 6 * (y * y * y * y * y) + 5 * (y * y * y * y) + 2 * (y * y * y * y * y * y) == y * y + 12 * x) && 3 < k) && k <= 4) && 1 == cond) && y == 4)) || ((y == 0 && x == 0) && 1 <= cond)) || (((((6 * (y * y * y * y * y) + 5 * (y * y * y * y) + 2 * (y * y * y * y * y * y) == y * y + 12 * x && y == 3) && c <= 3) && 1 == cond) && 2 < k) && k <= 3)) || (((0 < k && k <= 1) && y == 1) && c <= 1)) || (((((6 * (y * y * y * y * y) + 5 * (y * y * y * y) + 2 * (y * y * y * y * y * y) == y * y + 12 * x && 4 < k) && y == 5) && c <= 5) && 1 == cond) && k <= 5) RESULT: Ultimate proved your program to be correct! [2021-08-26 08:15:48,842 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...