./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 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/cohendiv-ll_valuebound5.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c4a921a48f99bfe08f1ebfef6b48605d2b05f34d .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 05:13:05,516 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 05:13:05,518 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 05:13:05,550 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 05:13:05,551 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 05:13:05,553 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 05:13:05,554 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 05:13:05,557 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 05:13:05,559 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 05:13:05,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 05:13:05,563 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 05:13:05,569 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 05:13:05,569 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 05:13:05,569 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 05:13:05,570 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 05:13:05,573 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 05:13:05,573 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 05:13:05,574 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 05:13:05,576 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 05:13:05,580 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 05:13:05,581 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 05:13:05,581 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 05:13:05,582 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 05:13:05,583 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 05:13:05,586 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 05:13:05,587 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 05:13:05,587 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 05:13:05,587 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 05:13:05,587 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 05:13:05,588 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 05:13:05,588 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 05:13:05,589 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 05:13:05,589 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 05:13:05,590 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 05:13:05,590 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 05:13:05,591 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 05:13:05,591 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 05:13:05,591 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 05:13:05,591 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 05:13:05,592 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 05:13:05,593 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 05:13:05,594 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 05:13:05,626 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 05:13:05,627 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 05:13:05,627 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 05:13:05,627 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 05:13:05,629 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 05:13:05,629 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 05:13:05,629 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 05:13:05,629 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 05:13:05,629 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 05:13:05,630 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 05:13:05,630 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 05:13:05,630 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 05:13:05,630 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 05:13:05,630 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 05:13:05,631 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 05:13:05,631 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 05:13:05,631 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 05:13:05,631 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 05:13:05,631 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 05:13:05,631 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 05:13:05,631 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 05:13:05,632 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 05:13:05,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 05:13:05,632 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 05:13:05,632 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 05:13:05,632 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 05:13:05,632 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 05:13:05,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 05:13:05,633 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 05:13:05,633 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 05:13:05,633 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c4a921a48f99bfe08f1ebfef6b48605d2b05f34d [2021-08-26 05:13:05,863 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 05:13:05,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 05:13:05,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 05:13:05,884 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 05:13:05,885 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 05:13:05,885 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound5.c [2021-08-26 05:13:05,929 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88208b10c/62690f02b1a74271b7486d7b0fcb604e/FLAG96e781300 [2021-08-26 05:13:06,277 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 05:13:06,278 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound5.c [2021-08-26 05:13:06,283 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88208b10c/62690f02b1a74271b7486d7b0fcb604e/FLAG96e781300 [2021-08-26 05:13:06,295 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88208b10c/62690f02b1a74271b7486d7b0fcb604e [2021-08-26 05:13:06,296 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 05:13:06,298 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 05:13:06,300 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 05:13:06,300 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 05:13:06,302 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 05:13:06,302 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 05:13:06" (1/1) ... [2021-08-26 05:13:06,303 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53ac73a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:13:06, skipping insertion in model container [2021-08-26 05:13:06,303 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 05:13:06" (1/1) ... [2021-08-26 05:13:06,307 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 05:13:06,317 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 05:13:06,423 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/cohendiv-ll_valuebound5.c[576,589] [2021-08-26 05:13:06,437 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 05:13:06,443 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 05:13:06,451 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/cohendiv-ll_valuebound5.c[576,589] [2021-08-26 05:13:06,466 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 05:13:06,474 INFO L208 MainTranslator]: Completed translation [2021-08-26 05:13:06,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:13:06 WrapperNode [2021-08-26 05:13:06,475 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 05:13:06,477 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 05:13:06,477 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 05:13:06,477 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 05:13:06,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:13:06" (1/1) ... [2021-08-26 05:13:06,514 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:13:06" (1/1) ... [2021-08-26 05:13:06,532 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 05:13:06,533 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 05:13:06,533 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 05:13:06,533 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 05:13:06,538 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:13:06" (1/1) ... [2021-08-26 05:13:06,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:13:06" (1/1) ... [2021-08-26 05:13:06,550 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:13:06" (1/1) ... [2021-08-26 05:13:06,550 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:13:06" (1/1) ... [2021-08-26 05:13:06,558 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:13:06" (1/1) ... [2021-08-26 05:13:06,561 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:13:06" (1/1) ... [2021-08-26 05:13:06,566 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:13:06" (1/1) ... [2021-08-26 05:13:06,569 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 05:13:06,571 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 05:13:06,572 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 05:13:06,572 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 05:13:06,572 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:13:06" (1/1) ... [2021-08-26 05:13:06,577 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 05:13:06,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:13:06,602 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 05:13:06,621 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 05:13:06,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 05:13:06,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 05:13:06,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 05:13:06,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 05:13:06,943 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 05:13:06,943 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2021-08-26 05:13:06,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 05:13:06 BoogieIcfgContainer [2021-08-26 05:13:06,944 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 05:13:06,945 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 05:13:06,945 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 05:13:06,947 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 05:13:06,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 05:13:06" (1/3) ... [2021-08-26 05:13:06,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67ed78bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 05:13:06, skipping insertion in model container [2021-08-26 05:13:06,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:13:06" (2/3) ... [2021-08-26 05:13:06,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67ed78bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 05:13:06, skipping insertion in model container [2021-08-26 05:13:06,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 05:13:06" (3/3) ... [2021-08-26 05:13:06,949 INFO L111 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_valuebound5.c [2021-08-26 05:13:06,952 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 05:13:06,956 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-08-26 05:13:06,996 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 05:13:07,003 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 05:13:07,003 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-08-26 05:13:07,013 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 35 states have (on average 1.6571428571428573) internal successors, (58), 42 states have internal predecessors, (58), 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 05:13:07,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-26 05:13:07,016 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:13:07,016 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:13:07,017 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:13:07,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:13:07,021 INFO L82 PathProgramCache]: Analyzing trace with hash 330581779, now seen corresponding path program 1 times [2021-08-26 05:13:07,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:13:07,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838306186] [2021-08-26 05:13:07,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:13:07,028 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:13:07,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:13:07,147 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 05:13:07,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:13:07,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838306186] [2021-08-26 05:13:07,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838306186] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:13:07,149 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:13:07,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 05:13:07,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900448484] [2021-08-26 05:13:07,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 05:13:07,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:13:07,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 05:13:07,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 05:13:07,164 INFO L87 Difference]: Start difference. First operand has 43 states, 35 states have (on average 1.6571428571428573) internal successors, (58), 42 states have internal predecessors, (58), 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 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:13:07,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:13:07,178 INFO L93 Difference]: Finished difference Result 83 states and 112 transitions. [2021-08-26 05:13:07,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 05:13:07,180 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-08-26 05:13:07,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:13:07,184 INFO L225 Difference]: With dead ends: 83 [2021-08-26 05:13:07,184 INFO L226 Difference]: Without dead ends: 39 [2021-08-26 05:13:07,186 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 05:13:07,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-08-26 05:13:07,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-08-26 05:13:07,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 32 states have (on average 1.25) internal successors, (40), 38 states have internal predecessors, (40), 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 05:13:07,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2021-08-26 05:13:07,210 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 11 [2021-08-26 05:13:07,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:13:07,211 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2021-08-26 05:13:07,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 05:13:07,212 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2021-08-26 05:13:07,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-26 05:13:07,212 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:13:07,212 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:13:07,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 05:13:07,213 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:13:07,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:13:07,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1507472743, now seen corresponding path program 1 times [2021-08-26 05:13:07,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:13:07,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053486213] [2021-08-26 05:13:07,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:13:07,218 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:13:07,239 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:13:07,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1945786181] [2021-08-26 05:13:07,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:13:07,240 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:13:07,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:13:07,241 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 05:13:07,242 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 05:13:07,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:13:07,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 17 conjunts are in the unsatisfiable core [2021-08-26 05:13:07,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:13:07,693 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 05:13:07,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:13:07,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053486213] [2021-08-26 05:13:07,694 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:13:07,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945786181] [2021-08-26 05:13:07,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945786181] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:13:07,695 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:13:07,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-26 05:13:07,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003366031] [2021-08-26 05:13:07,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 05:13:07,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:13:07,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 05:13:07,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-26 05:13:07,706 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:13:07,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:13:07,935 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2021-08-26 05:13:07,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-26 05:13:07,937 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-08-26 05:13:07,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:13:07,937 INFO L225 Difference]: With dead ends: 52 [2021-08-26 05:13:07,938 INFO L226 Difference]: Without dead ends: 50 [2021-08-26 05:13:07,938 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 243.3ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-08-26 05:13:07,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-08-26 05:13:07,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 41. [2021-08-26 05:13:07,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 40 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:13:07,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2021-08-26 05:13:07,942 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 11 [2021-08-26 05:13:07,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:13:07,942 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2021-08-26 05:13:07,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:13:07,943 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2021-08-26 05:13:07,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-26 05:13:07,943 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:13:07,943 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:13:07,964 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 05:13:08,156 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 05:13:08,157 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:13:08,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:13:08,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1277171076, now seen corresponding path program 1 times [2021-08-26 05:13:08,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:13:08,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521235007] [2021-08-26 05:13:08,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:13:08,158 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:13:08,169 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:13:08,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1709192776] [2021-08-26 05:13:08,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:13:08,182 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:13:08,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:13:08,184 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 05:13:08,196 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 05:13:08,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:13:08,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 17 conjunts are in the unsatisfiable core [2021-08-26 05:13:08,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:13:08,477 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 05:13:08,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:13:08,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521235007] [2021-08-26 05:13:08,477 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:13:08,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709192776] [2021-08-26 05:13:08,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709192776] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:13:08,478 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:13:08,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-26 05:13:08,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824545104] [2021-08-26 05:13:08,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 05:13:08,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:13:08,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 05:13:08,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-26 05:13:08,479 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 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 05:13:08,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:13:08,647 INFO L93 Difference]: Finished difference Result 69 states and 71 transitions. [2021-08-26 05:13:08,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-26 05:13:08,648 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 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 13 [2021-08-26 05:13:08,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:13:08,649 INFO L225 Difference]: With dead ends: 69 [2021-08-26 05:13:08,649 INFO L226 Difference]: Without dead ends: 61 [2021-08-26 05:13:08,649 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 145.0ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-08-26 05:13:08,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-08-26 05:13:08,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 53. [2021-08-26 05:13:08,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 52 states have internal predecessors, (58), 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 05:13:08,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2021-08-26 05:13:08,654 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 13 [2021-08-26 05:13:08,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:13:08,654 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2021-08-26 05:13:08,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 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 05:13:08,654 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2021-08-26 05:13:08,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-26 05:13:08,655 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:13:08,655 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:13:08,673 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 05:13:08,868 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 05:13:08,869 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:13:08,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:13:08,869 INFO L82 PathProgramCache]: Analyzing trace with hash 916732292, now seen corresponding path program 1 times [2021-08-26 05:13:08,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:13:08,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087013850] [2021-08-26 05:13:08,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:13:08,869 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:13:08,879 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:13:08,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1212479841] [2021-08-26 05:13:08,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:13:08,882 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:13:08,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:13:08,885 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 05:13:08,886 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 05:13:08,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:13:08,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-26 05:13:08,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:13:08,996 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 05:13:08,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:13:08,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087013850] [2021-08-26 05:13:08,997 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:13:08,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212479841] [2021-08-26 05:13:08,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212479841] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:13:08,997 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:13:08,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 05:13:08,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226341376] [2021-08-26 05:13:08,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 05:13:08,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:13:08,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 05:13:08,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 05:13:08,999 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 05:13:09,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:13:09,052 INFO L93 Difference]: Finished difference Result 95 states and 105 transitions. [2021-08-26 05:13:09,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 05:13:09,052 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-08-26 05:13:09,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:13:09,053 INFO L225 Difference]: With dead ends: 95 [2021-08-26 05:13:09,053 INFO L226 Difference]: Without dead ends: 89 [2021-08-26 05:13:09,054 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 05:13:09,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-08-26 05:13:09,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 72. [2021-08-26 05:13:09,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 65 states have (on average 1.2615384615384615) internal successors, (82), 71 states have internal predecessors, (82), 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 05:13:09,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 82 transitions. [2021-08-26 05:13:09,059 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 82 transitions. Word has length 16 [2021-08-26 05:13:09,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:13:09,059 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 82 transitions. [2021-08-26 05:13:09,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 05:13:09,060 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 82 transitions. [2021-08-26 05:13:09,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-26 05:13:09,060 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:13:09,060 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:13:09,079 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 05:13:09,272 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 05:13:09,272 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:13:09,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:13:09,273 INFO L82 PathProgramCache]: Analyzing trace with hash 2015957290, now seen corresponding path program 1 times [2021-08-26 05:13:09,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:13:09,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707150835] [2021-08-26 05:13:09,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:13:09,273 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:13:09,289 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:13:09,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [129751428] [2021-08-26 05:13:09,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:13:09,289 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:13:09,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:13:09,290 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 05:13:09,291 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 05:13:09,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:13:09,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-26 05:13:09,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:13:09,473 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 05:13:09,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:13:09,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707150835] [2021-08-26 05:13:09,477 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:13:09,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129751428] [2021-08-26 05:13:09,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129751428] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:13:09,479 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:13:09,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-26 05:13:09,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092870005] [2021-08-26 05:13:09,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 05:13:09,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:13:09,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 05:13:09,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-26 05:13:09,482 INFO L87 Difference]: Start difference. First operand 72 states and 82 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 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 05:13:09,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:13:09,571 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2021-08-26 05:13:09,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-26 05:13:09,571 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 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 05:13:09,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:13:09,573 INFO L225 Difference]: With dead ends: 72 [2021-08-26 05:13:09,573 INFO L226 Difference]: Without dead ends: 70 [2021-08-26 05:13:09,574 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 51.4ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-08-26 05:13:09,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-08-26 05:13:09,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-08-26 05:13:09,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 64 states have (on average 1.203125) internal successors, (77), 69 states have internal predecessors, (77), 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 05:13:09,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 77 transitions. [2021-08-26 05:13:09,589 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 77 transitions. Word has length 20 [2021-08-26 05:13:09,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:13:09,589 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 77 transitions. [2021-08-26 05:13:09,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 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 05:13:09,589 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 77 transitions. [2021-08-26 05:13:09,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-26 05:13:09,590 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:13:09,590 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:13:09,609 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 05:13:09,804 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 05:13:09,805 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:13:09,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:13:09,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1552659725, now seen corresponding path program 1 times [2021-08-26 05:13:09,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:13:09,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867282008] [2021-08-26 05:13:09,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:13:09,806 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:13:09,815 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:13:09,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1938273223] [2021-08-26 05:13:09,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:13:09,815 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:13:09,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:13:09,816 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 05:13:09,818 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 05:13:09,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:13:09,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-26 05:13:09,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:13:10,067 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 05:13:10,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:13:10,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867282008] [2021-08-26 05:13:10,067 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:13:10,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938273223] [2021-08-26 05:13:10,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938273223] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:13:10,068 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:13:10,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-08-26 05:13:10,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057071109] [2021-08-26 05:13:10,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 05:13:10,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:13:10,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 05:13:10,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-08-26 05:13:10,069 INFO L87 Difference]: Start difference. First operand 70 states and 77 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 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 05:13:10,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:13:10,252 INFO L93 Difference]: Finished difference Result 123 states and 133 transitions. [2021-08-26 05:13:10,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-26 05:13:10,252 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 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 25 [2021-08-26 05:13:10,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:13:10,253 INFO L225 Difference]: With dead ends: 123 [2021-08-26 05:13:10,253 INFO L226 Difference]: Without dead ends: 117 [2021-08-26 05:13:10,253 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 106.4ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-08-26 05:13:10,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-08-26 05:13:10,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 88. [2021-08-26 05:13:10,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 82 states have (on average 1.1951219512195121) internal successors, (98), 87 states have internal predecessors, (98), 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 05:13:10,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 98 transitions. [2021-08-26 05:13:10,259 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 98 transitions. Word has length 25 [2021-08-26 05:13:10,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:13:10,259 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 98 transitions. [2021-08-26 05:13:10,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 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 05:13:10,259 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 98 transitions. [2021-08-26 05:13:10,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-26 05:13:10,260 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:13:10,260 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:13:10,279 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 05:13:10,464 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 05:13:10,465 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:13:10,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:13:10,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1755069467, now seen corresponding path program 1 times [2021-08-26 05:13:10,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:13:10,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751983967] [2021-08-26 05:13:10,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:13:10,465 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:13:10,473 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:13:10,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [321991972] [2021-08-26 05:13:10,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:13:10,473 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:13:10,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:13:10,476 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 05:13:10,483 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 05:13:10,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:13:10,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 15 conjunts are in the unsatisfiable core [2021-08-26 05:13:10,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:13:10,763 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:13:10,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:13:10,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751983967] [2021-08-26 05:13:10,765 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:13:10,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321991972] [2021-08-26 05:13:10,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321991972] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:13:10,765 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:13:10,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-08-26 05:13:10,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480583345] [2021-08-26 05:13:10,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 05:13:10,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:13:10,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 05:13:10,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-26 05:13:10,768 INFO L87 Difference]: Start difference. First operand 88 states and 98 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 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 05:13:10,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:13:10,866 INFO L93 Difference]: Finished difference Result 140 states and 153 transitions. [2021-08-26 05:13:10,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-26 05:13:10,867 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 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 05:13:10,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:13:10,868 INFO L225 Difference]: With dead ends: 140 [2021-08-26 05:13:10,868 INFO L226 Difference]: Without dead ends: 132 [2021-08-26 05:13:10,868 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 32.8ms TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-08-26 05:13:10,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-08-26 05:13:10,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 101. [2021-08-26 05:13:10,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 95 states have (on average 1.1789473684210525) internal successors, (112), 100 states have internal predecessors, (112), 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 05:13:10,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 112 transitions. [2021-08-26 05:13:10,886 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 112 transitions. Word has length 26 [2021-08-26 05:13:10,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:13:10,887 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 112 transitions. [2021-08-26 05:13:10,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 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 05:13:10,887 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 112 transitions. [2021-08-26 05:13:10,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-08-26 05:13:10,888 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:13:10,888 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:13:10,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-08-26 05:13:11,111 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 05:13:11,111 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:13:11,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:13:11,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1828677220, now seen corresponding path program 2 times [2021-08-26 05:13:11,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:13:11,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930714639] [2021-08-26 05:13:11,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:13:11,112 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:13:11,119 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:13:11,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [939108494] [2021-08-26 05:13:11,119 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 05:13:11,119 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:13:11,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:13:11,120 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 05:13:11,126 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 05:13:11,239 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 05:13:11,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:13:11,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 27 conjunts are in the unsatisfiable core [2021-08-26 05:13:11,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:13:11,651 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:13:11,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:13:11,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930714639] [2021-08-26 05:13:11,651 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:13:11,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939108494] [2021-08-26 05:13:11,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939108494] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:13:11,652 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:13:11,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-08-26 05:13:11,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326975033] [2021-08-26 05:13:11,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-26 05:13:11,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:13:11,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-26 05:13:11,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-08-26 05:13:11,653 INFO L87 Difference]: Start difference. First operand 101 states and 112 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 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 05:13:12,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:13:12,138 INFO L93 Difference]: Finished difference Result 176 states and 194 transitions. [2021-08-26 05:13:12,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-26 05:13:12,138 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 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 34 [2021-08-26 05:13:12,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:13:12,139 INFO L225 Difference]: With dead ends: 176 [2021-08-26 05:13:12,139 INFO L226 Difference]: Without dead ends: 118 [2021-08-26 05:13:12,140 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 394.2ms TimeCoverageRelationStatistics Valid=132, Invalid=330, Unknown=0, NotChecked=0, Total=462 [2021-08-26 05:13:12,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-08-26 05:13:12,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 87. [2021-08-26 05:13:12,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 84 states have (on average 1.119047619047619) internal successors, (94), 86 states have internal predecessors, (94), 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 05:13:12,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 94 transitions. [2021-08-26 05:13:12,145 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 94 transitions. Word has length 34 [2021-08-26 05:13:12,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:13:12,145 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 94 transitions. [2021-08-26 05:13:12,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 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 05:13:12,145 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 94 transitions. [2021-08-26 05:13:12,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-08-26 05:13:12,146 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:13:12,146 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:13:12,163 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 05:13:12,363 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 05:13:12,363 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:13:12,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:13:12,363 INFO L82 PathProgramCache]: Analyzing trace with hash -797667638, now seen corresponding path program 1 times [2021-08-26 05:13:12,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:13:12,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624318956] [2021-08-26 05:13:12,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:13:12,364 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:13:12,371 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:13:12,371 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1831370688] [2021-08-26 05:13:12,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:13:12,371 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:13:12,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:13:12,372 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 05:13:12,373 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 05:13:12,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:13:12,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 23 conjunts are in the unsatisfiable core [2021-08-26 05:13:12,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:13:12,959 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:13:12,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:13:12,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624318956] [2021-08-26 05:13:12,959 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:13:12,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831370688] [2021-08-26 05:13:12,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831370688] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:13:12,960 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:13:12,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-08-26 05:13:12,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597017174] [2021-08-26 05:13:12,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-26 05:13:12,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:13:12,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-26 05:13:12,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-08-26 05:13:12,961 INFO L87 Difference]: Start difference. First operand 87 states and 94 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 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 05:13:13,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:13:13,155 INFO L93 Difference]: Finished difference Result 147 states and 159 transitions. [2021-08-26 05:13:13,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-26 05:13:13,155 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 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 35 [2021-08-26 05:13:13,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:13:13,157 INFO L225 Difference]: With dead ends: 147 [2021-08-26 05:13:13,157 INFO L226 Difference]: Without dead ends: 139 [2021-08-26 05:13:13,158 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 94.8ms TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-08-26 05:13:13,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-08-26 05:13:13,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 96. [2021-08-26 05:13:13,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 93 states have (on average 1.118279569892473) internal successors, (104), 95 states have internal predecessors, (104), 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 05:13:13,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 104 transitions. [2021-08-26 05:13:13,165 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 104 transitions. Word has length 35 [2021-08-26 05:13:13,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:13:13,166 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 104 transitions. [2021-08-26 05:13:13,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 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 05:13:13,166 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 104 transitions. [2021-08-26 05:13:13,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-26 05:13:13,167 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:13:13,167 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:13:13,187 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 05:13:13,387 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 05:13:13,387 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:13:13,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:13:13,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1158953764, now seen corresponding path program 2 times [2021-08-26 05:13:13,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:13:13,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624806358] [2021-08-26 05:13:13,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:13:13,388 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:13:13,394 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:13:13,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [905752435] [2021-08-26 05:13:13,395 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 05:13:13,395 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:13:13,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:13:13,396 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 05:13:13,400 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 05:13:13,604 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 05:13:13,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:13:13,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-26 05:13:13,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:13:13,700 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:13:13,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:13:13,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624806358] [2021-08-26 05:13:13,700 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:13:13,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905752435] [2021-08-26 05:13:13,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905752435] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:13:13,701 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:13:13,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-26 05:13:13,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455670161] [2021-08-26 05:13:13,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 05:13:13,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:13:13,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 05:13:13,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-26 05:13:13,702 INFO L87 Difference]: Start difference. First operand 96 states and 104 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 05:13:13,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:13:13,744 INFO L93 Difference]: Finished difference Result 177 states and 190 transitions. [2021-08-26 05:13:13,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 05:13:13,744 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 39 [2021-08-26 05:13:13,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:13:13,745 INFO L225 Difference]: With dead ends: 177 [2021-08-26 05:13:13,745 INFO L226 Difference]: Without dead ends: 110 [2021-08-26 05:13:13,745 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 12.4ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-26 05:13:13,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-08-26 05:13:13,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 102. [2021-08-26 05:13:13,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 99 states have (on average 1.1111111111111112) internal successors, (110), 101 states have internal predecessors, (110), 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 05:13:13,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 110 transitions. [2021-08-26 05:13:13,751 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 110 transitions. Word has length 39 [2021-08-26 05:13:13,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:13:13,751 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 110 transitions. [2021-08-26 05:13:13,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 05:13:13,751 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 110 transitions. [2021-08-26 05:13:13,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-08-26 05:13:13,752 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:13:13,752 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:13:13,768 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 05:13:13,960 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 05:13:13,961 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:13:13,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:13:13,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1074581755, now seen corresponding path program 2 times [2021-08-26 05:13:13,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:13:13,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104011429] [2021-08-26 05:13:13,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:13:13,961 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:13:13,982 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:13:13,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2071580082] [2021-08-26 05:13:13,986 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 05:13:13,987 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:13:13,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:13:13,988 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 05:13:13,988 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 05:13:14,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 05:13:14,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:13:14,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 34 conjunts are in the unsatisfiable core [2021-08-26 05:13:14,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:13:15,092 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:13:15,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:13:15,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104011429] [2021-08-26 05:13:15,092 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:13:15,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071580082] [2021-08-26 05:13:15,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071580082] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:13:15,093 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:13:15,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-08-26 05:13:15,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55769748] [2021-08-26 05:13:15,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-26 05:13:15,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:13:15,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-26 05:13:15,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-08-26 05:13:15,094 INFO L87 Difference]: Start difference. First operand 102 states and 110 transitions. Second operand has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 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 05:13:15,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:13:15,679 INFO L93 Difference]: Finished difference Result 154 states and 166 transitions. [2021-08-26 05:13:15,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-26 05:13:15,679 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 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 44 [2021-08-26 05:13:15,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:13:15,680 INFO L225 Difference]: With dead ends: 154 [2021-08-26 05:13:15,680 INFO L226 Difference]: Without dead ends: 146 [2021-08-26 05:13:15,680 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 483.4ms TimeCoverageRelationStatistics Valid=162, Invalid=390, Unknown=0, NotChecked=0, Total=552 [2021-08-26 05:13:15,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-08-26 05:13:15,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 111. [2021-08-26 05:13:15,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 108 states have (on average 1.1018518518518519) internal successors, (119), 110 states have internal predecessors, (119), 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 05:13:15,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 119 transitions. [2021-08-26 05:13:15,686 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 119 transitions. Word has length 44 [2021-08-26 05:13:15,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:13:15,687 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 119 transitions. [2021-08-26 05:13:15,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 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 05:13:15,687 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 119 transitions. [2021-08-26 05:13:15,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-26 05:13:15,688 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:13:15,689 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:13:15,705 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 05:13:15,892 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 05:13:15,893 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:13:15,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:13:15,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1128629901, now seen corresponding path program 3 times [2021-08-26 05:13:15,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:13:15,893 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563848018] [2021-08-26 05:13:15,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:13:15,893 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:13:15,900 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:13:15,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1254202378] [2021-08-26 05:13:15,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 05:13:15,900 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:13:15,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:13:15,905 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:13:15,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-08-26 05:13:16,188 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-08-26 05:13:16,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:13:16,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 20 conjunts are in the unsatisfiable core [2021-08-26 05:13:16,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:13:16,423 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-08-26 05:13:16,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:13:16,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563848018] [2021-08-26 05:13:16,423 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:13:16,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254202378] [2021-08-26 05:13:16,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254202378] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:13:16,424 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:13:16,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-26 05:13:16,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826926787] [2021-08-26 05:13:16,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 05:13:16,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:13:16,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 05:13:16,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-08-26 05:13:16,425 INFO L87 Difference]: Start difference. First operand 111 states and 119 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 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 05:13:16,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:13:16,551 INFO L93 Difference]: Finished difference Result 119 states and 124 transitions. [2021-08-26 05:13:16,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-26 05:13:16,551 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 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 48 [2021-08-26 05:13:16,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:13:16,552 INFO L225 Difference]: With dead ends: 119 [2021-08-26 05:13:16,552 INFO L226 Difference]: Without dead ends: 105 [2021-08-26 05:13:16,553 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 66.8ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-08-26 05:13:16,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-08-26 05:13:16,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 87. [2021-08-26 05:13:16,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 84 states have (on average 1.0595238095238095) internal successors, (89), 86 states have internal predecessors, (89), 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 05:13:16,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 89 transitions. [2021-08-26 05:13:16,559 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 89 transitions. Word has length 48 [2021-08-26 05:13:16,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:13:16,560 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 89 transitions. [2021-08-26 05:13:16,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 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 05:13:16,560 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 89 transitions. [2021-08-26 05:13:16,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-08-26 05:13:16,562 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:13:16,563 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:13:16,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-08-26 05:13:16,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-08-26 05:13:16,777 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:13:16,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:13:16,777 INFO L82 PathProgramCache]: Analyzing trace with hash -413997928, now seen corresponding path program 4 times [2021-08-26 05:13:16,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:13:16,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959288065] [2021-08-26 05:13:16,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:13:16,777 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:13:16,784 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:13:16,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [592298249] [2021-08-26 05:13:16,784 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-26 05:13:16,784 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:13:16,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:13:16,786 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:13:16,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-08-26 05:13:17,112 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-26 05:13:17,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:13:17,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-26 05:13:17,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:13:17,319 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 37 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:13:17,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:13:17,320 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959288065] [2021-08-26 05:13:17,320 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:13:17,320 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592298249] [2021-08-26 05:13:17,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592298249] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:13:17,320 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:13:17,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-08-26 05:13:17,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889911222] [2021-08-26 05:13:17,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 05:13:17,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:13:17,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 05:13:17,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-08-26 05:13:17,321 INFO L87 Difference]: Start difference. First operand 87 states and 89 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 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 05:13:17,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:13:17,416 INFO L93 Difference]: Finished difference Result 157 states and 160 transitions. [2021-08-26 05:13:17,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-26 05:13:17,416 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 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 57 [2021-08-26 05:13:17,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:13:17,417 INFO L225 Difference]: With dead ends: 157 [2021-08-26 05:13:17,417 INFO L226 Difference]: Without dead ends: 105 [2021-08-26 05:13:17,419 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 37.8ms TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-08-26 05:13:17,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-08-26 05:13:17,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 97. [2021-08-26 05:13:17,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 94 states have (on average 1.0638297872340425) internal successors, (100), 96 states have internal predecessors, (100), 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 05:13:17,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 100 transitions. [2021-08-26 05:13:17,426 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 100 transitions. Word has length 57 [2021-08-26 05:13:17,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:13:17,426 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 100 transitions. [2021-08-26 05:13:17,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 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 05:13:17,427 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 100 transitions. [2021-08-26 05:13:17,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-08-26 05:13:17,428 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:13:17,428 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:13:17,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-08-26 05:13:17,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-08-26 05:13:17,645 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:13:17,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:13:17,645 INFO L82 PathProgramCache]: Analyzing trace with hash 300678153, now seen corresponding path program 5 times [2021-08-26 05:13:17,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:13:17,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799253420] [2021-08-26 05:13:17,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:13:17,645 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:13:17,652 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:13:17,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1862132637] [2021-08-26 05:13:17,658 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-26 05:13:17,659 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:13:17,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:13:17,659 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:13:17,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-08-26 05:13:18,016 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-08-26 05:13:18,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:13:18,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 17 conjunts are in the unsatisfiable core [2021-08-26 05:13:18,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:13:18,476 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 46 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:13:18,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:13:18,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799253420] [2021-08-26 05:13:18,477 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:13:18,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862132637] [2021-08-26 05:13:18,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862132637] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:13:18,477 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:13:18,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-08-26 05:13:18,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643707047] [2021-08-26 05:13:18,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-26 05:13:18,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:13:18,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-26 05:13:18,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-08-26 05:13:18,478 INFO L87 Difference]: Start difference. First operand 97 states and 100 transitions. Second operand has 12 states, 12 states have (on average 5.5) internal successors, (66), 12 states have internal predecessors, (66), 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 05:13:18,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:13:18,674 INFO L93 Difference]: Finished difference Result 100 states and 103 transitions. [2021-08-26 05:13:18,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-26 05:13:18,675 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 12 states have internal predecessors, (66), 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 66 [2021-08-26 05:13:18,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:13:18,675 INFO L225 Difference]: With dead ends: 100 [2021-08-26 05:13:18,676 INFO L226 Difference]: Without dead ends: 0 [2021-08-26 05:13:18,676 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 213.1ms TimeCoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2021-08-26 05:13:18,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-26 05:13:18,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-26 05:13:18,676 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 05:13:18,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-26 05:13:18,677 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 66 [2021-08-26 05:13:18,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:13:18,677 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-26 05:13:18,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 12 states have internal predecessors, (66), 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 05:13:18,677 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-26 05:13:18,677 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-26 05:13:18,678 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:13:18,679 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:13:18,679 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:13:18,679 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:13:18,679 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:13:18,679 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:13:18,679 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:13:18,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-08-26 05:13:18,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-08-26 05:13:18,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-26 05:13:18,884 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:13:18,885 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:13:18,922 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:13:18,951 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:13:18,970 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:13:18,987 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:13:19,010 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:13:19,027 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:13:19,049 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:13:19,067 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:13:21,662 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-26 05:13:21,662 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2021-08-26 05:13:21,662 INFO L857 garLoopResultBuilder]: For program point L11-1(lines 11 13) no Hoare annotation was computed. [2021-08-26 05:13:21,662 INFO L857 garLoopResultBuilder]: For program point L11-2(lines 11 13) no Hoare annotation was computed. [2021-08-26 05:13:21,662 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-26 05:13:21,662 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-26 05:13:21,662 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-26 05:13:21,663 INFO L857 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2021-08-26 05:13:21,663 INFO L857 garLoopResultBuilder]: For program point L12-2(line 12) no Hoare annotation was computed. [2021-08-26 05:13:21,663 INFO L857 garLoopResultBuilder]: For program point L12-4(line 12) no Hoare annotation was computed. [2021-08-26 05:13:21,663 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-26 05:13:21,663 INFO L853 garLoopResultBuilder]: At program point L38-2(lines 38 62) the Hoare annotation is: (let ((.cse7 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse12 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (<= ULTIMATE.start_main_~y~0 5)) (.cse8 (* 2 ULTIMATE.start_main_~y~0))) (let ((.cse11 (* 4 ULTIMATE.start_main_~y~0)) (.cse9 (<= ULTIMATE.start_main_~x~0 5)) (.cse1 (<= ULTIMATE.start_main_~r~0 5)) (.cse3 (<= 1 ULTIMATE.start_main_~y~0)) (.cse5 (<= 0 ULTIMATE.start_main_~x~0)) (.cse10 (or (and .cse0 .cse12 .cse2 (= ULTIMATE.start_main_~a~0 1) .cse7) (and .cse0 .cse12 .cse2 (= ULTIMATE.start_main_~b~0 .cse8) (= ULTIMATE.start_main_~a~0 2))))) (let ((.cse4 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) (.cse6 (or (and .cse0 .cse9 .cse1 .cse12 (= ULTIMATE.start_main_~b~0 .cse11) (= ULTIMATE.start_main_~a~0 4) .cse3 (<= .cse11 5) .cse5) (and .cse9 .cse1 .cse3 .cse5 .cse10)))) (or (and (= ULTIMATE.start_main_~a~0 0) .cse0 (= ULTIMATE.start_main_~b~0 0) .cse1 .cse2 .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0)) (and (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) .cse6 .cse4 .cse7) (and (< (div (+ (- 1) (* ULTIMATE.start_main_~r~0 (- 1))) (- 2)) (+ ULTIMATE.start_main_~y~0 1)) (or (and (= ULTIMATE.start_main_~q~0 2) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 .cse8)) .cse6 (<= .cse8 ULTIMATE.start_main_~x~0)) (and (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) .cse9 (= ULTIMATE.start_main_~q~0 1) .cse5 .cse10 .cse7) (and (= ULTIMATE.start_main_~q~0 4) (<= .cse11 ULTIMATE.start_main_~x~0) (= (+ ULTIMATE.start_main_~r~0 .cse11) ULTIMATE.start_main_~x~0) .cse6))))))) [2021-08-26 05:13:21,663 INFO L857 garLoopResultBuilder]: For program point L38-3(lines 38 62) no Hoare annotation was computed. [2021-08-26 05:13:21,663 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-26 05:13:21,664 INFO L853 garLoopResultBuilder]: At program point L47-2(lines 47 59) the Hoare annotation is: (let ((.cse2 (<= ULTIMATE.start_main_~r~0 5)) (.cse4 (<= ULTIMATE.start_main_~y~0 5)) (.cse5 (<= 1 ULTIMATE.start_main_~y~0)) (.cse8 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) (.cse6 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0)) (.cse10 (* 2 ULTIMATE.start_main_~y~0)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse3 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (* 4 ULTIMATE.start_main_~y~0)) (.cse7 (= ULTIMATE.start_main_~a~0 1)) (.cse9 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))) (or (and .cse0 (<= .cse1 ULTIMATE.start_main_~r~0) .cse2 .cse3 (= ULTIMATE.start_main_~b~0 .cse1) .cse4 (= ULTIMATE.start_main_~a~0 4) .cse5 (= ULTIMATE.start_main_~q~0 0) .cse6) (and .cse0 .cse2 .cse3 .cse4 .cse5 .cse7 .cse8 (<= 0 ULTIMATE.start_main_~x~0) .cse6 .cse9) (and .cse0 .cse2 .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~b~0 .cse10) (= ULTIMATE.start_main_~a~0 2) .cse8 (<= .cse10 ULTIMATE.start_main_~r~0) .cse6) (and (< ULTIMATE.start_main_~r~0 (* 2 ULTIMATE.start_main_~b~0)) (let ((.cse11 (<= ULTIMATE.start_main_~x~0 5)) (.cse12 (<= 0 ULTIMATE.start_main_~r~0))) (or (and .cse0 .cse11 .cse3 (= ULTIMATE.start_main_~q~0 2) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 .cse10)) (<= .cse10 ULTIMATE.start_main_~x~0)) (and (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) .cse0 .cse11 .cse3 .cse12 (= ULTIMATE.start_main_~q~0 1)) (and (= ULTIMATE.start_main_~q~0 4) .cse0 .cse11 .cse3 (= (+ ULTIMATE.start_main_~r~0 .cse1) ULTIMATE.start_main_~x~0) .cse12))) .cse7 .cse9))) [2021-08-26 05:13:21,664 INFO L857 garLoopResultBuilder]: For program point L47-3(lines 47 59) no Hoare annotation was computed. [2021-08-26 05:13:21,664 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-26 05:13:21,664 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-08-26 05:13:21,664 INFO L853 garLoopResultBuilder]: At program point L15-2(lines 14 20) the Hoare annotation is: (let ((.cse7 (= ULTIMATE.start_main_~a~0 1)) (.cse9 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse6 (<= ULTIMATE.start_main_~y~0 5)) (.cse2 (* 2 ULTIMATE.start_main_~y~0)) (.cse3 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse4 (<= ULTIMATE.start_main_~x~0 5)) (.cse10 (<= ULTIMATE.start_main_~r~0 5)) (.cse5 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse11 (<= 1 ULTIMATE.start_main_~y~0)) (.cse0 (* 4 ULTIMATE.start_main_~y~0)) (.cse8 (<= 0 ULTIMATE.start_main_~x~0))) (let ((.cse1 (or (and .cse3 .cse4 .cse10 .cse5 .cse6 .cse11 .cse7 .cse8 .cse9) (and .cse3 .cse4 .cse10 .cse5 .cse6 .cse11 (= ULTIMATE.start_main_~b~0 .cse2) (= ULTIMATE.start_main_~a~0 2) .cse8) (and .cse3 .cse4 .cse10 .cse5 (= ULTIMATE.start_main_~b~0 .cse0) (= ULTIMATE.start_main_~a~0 4) .cse11 (<= .cse0 5) .cse8))) (.cse12 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0))))) (or (and (< (div (+ (- 1) (* ULTIMATE.start_main_~r~0 (- 1))) (- 2)) (+ ULTIMATE.start_main_~y~0 1)) (or (and (= ULTIMATE.start_main_~q~0 4) (<= .cse0 ULTIMATE.start_main_~x~0) .cse1 (= (+ ULTIMATE.start_main_~r~0 .cse0) ULTIMATE.start_main_~x~0)) (and (= ULTIMATE.start_main_~q~0 2) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 .cse2)) .cse1 (<= .cse2 ULTIMATE.start_main_~x~0)) (and (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) .cse3 .cse4 .cse5 .cse6 .cse7 (= ULTIMATE.start_main_~q~0 1) .cse8 .cse9))) (and .cse3 .cse10 .cse6 .cse11 .cse12 .cse8 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0)) (and .cse1 (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse12 .cse9)))) [2021-08-26 05:13:21,664 INFO L857 garLoopResultBuilder]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2021-08-26 05:13:21,664 INFO L853 garLoopResultBuilder]: At program point L15-5(lines 42 43) the Hoare annotation is: (let ((.cse4 (* 2 ULTIMATE.start_main_~y~0)) (.cse8 (<= ULTIMATE.start_main_~y~0 5)) (.cse9 (= ULTIMATE.start_main_~a~0 1)) (.cse2 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse6 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse7 (<= ULTIMATE.start_main_~x~0 5)) (.cse11 (<= ULTIMATE.start_main_~r~0 5)) (.cse12 (<= 1 ULTIMATE.start_main_~y~0)) (.cse5 (* 4 ULTIMATE.start_main_~y~0)) (.cse10 (<= 0 ULTIMATE.start_main_~x~0))) (let ((.cse0 (or (and .cse6 .cse7 .cse11 .cse8 .cse12 (= ULTIMATE.start_main_~b~0 .cse4) (= ULTIMATE.start_main_~a~0 2) .cse10) (and .cse6 .cse7 .cse11 .cse8 .cse12 .cse9 .cse10 .cse2) (and .cse6 .cse7 .cse11 (= ULTIMATE.start_main_~b~0 .cse5) (= ULTIMATE.start_main_~a~0 4) .cse12 (<= .cse5 5) .cse10))) (.cse3 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0))))) (or (and (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0 .cse1 .cse2) (and (< (div (+ (- 1) (* ULTIMATE.start_main_~r~0 (- 1))) (- 2)) (+ ULTIMATE.start_main_~y~0 1)) (or (and .cse3 (= ULTIMATE.start_main_~q~0 2) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 .cse4)) .cse0 (<= .cse4 ULTIMATE.start_main_~x~0)) (and (= ULTIMATE.start_main_~q~0 4) (<= .cse5 ULTIMATE.start_main_~x~0) .cse3 (= (+ ULTIMATE.start_main_~r~0 .cse5) ULTIMATE.start_main_~x~0) .cse0) (and (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) .cse6 .cse7 .cse3 .cse8 .cse9 (= ULTIMATE.start_main_~q~0 1) .cse10 .cse2))) (and .cse6 .cse11 .cse3 .cse8 .cse12 .cse1 .cse10 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0))))) [2021-08-26 05:13:21,665 INFO L857 garLoopResultBuilder]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2021-08-26 05:13:21,665 INFO L853 garLoopResultBuilder]: At program point L15-8(lines 14 20) the Hoare annotation is: (let ((.cse3 (= ULTIMATE.start_main_~a~0 1)) (.cse6 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse10 (* 2 ULTIMATE.start_main_~y~0)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= ULTIMATE.start_main_~r~0 5)) (.cse7 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse11 (* 4 ULTIMATE.start_main_~y~0)) (.cse2 (<= 1 ULTIMATE.start_main_~y~0)) (.cse4 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) (.cse5 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0))) (or (and .cse0 .cse1 (<= ULTIMATE.start_main_~y~0 5) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse2 .cse3 .cse4 (<= 0 ULTIMATE.start_main_~x~0) .cse5 .cse6) (and .cse7 (< ULTIMATE.start_main_~r~0 (* 2 ULTIMATE.start_main_~b~0)) .cse3 (let ((.cse8 (<= ULTIMATE.start_main_~x~0 5)) (.cse9 (<= 0 ULTIMATE.start_main_~r~0))) (or (and (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) .cse0 .cse8 .cse9 (= ULTIMATE.start_main_~q~0 1)) (and .cse0 .cse8 (= ULTIMATE.start_main_~q~0 2) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 .cse10)) (<= .cse10 ULTIMATE.start_main_~x~0)) (and (= ULTIMATE.start_main_~q~0 4) .cse0 .cse8 (= (+ ULTIMATE.start_main_~r~0 .cse11) ULTIMATE.start_main_~x~0) .cse9))) .cse6) (and .cse0 .cse1 .cse7 .cse2 (= ULTIMATE.start_main_~b~0 .cse10) (= ULTIMATE.start_main_~a~0 2) .cse4 (<= .cse10 ULTIMATE.start_main_~r~0) .cse5) (and .cse0 (<= .cse11 ULTIMATE.start_main_~r~0) .cse1 .cse7 (= ULTIMATE.start_main_~b~0 .cse11) (= ULTIMATE.start_main_~a~0 4) .cse2 .cse4 .cse5))) [2021-08-26 05:13:21,665 INFO L857 garLoopResultBuilder]: For program point L15-9(lines 15 18) no Hoare annotation was computed. [2021-08-26 05:13:21,665 INFO L853 garLoopResultBuilder]: At program point L15-11(lines 14 20) the Hoare annotation is: (let ((.cse2 (<= ULTIMATE.start_main_~y~0 5)) (.cse3 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse5 (= ULTIMATE.start_main_~a~0 1)) (.cse7 (<= 0 ULTIMATE.start_main_~x~0)) (.cse9 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= ULTIMATE.start_main_~r~0 5)) (.cse10 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse4 (<= 1 ULTIMATE.start_main_~y~0)) (.cse6 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) (.cse8 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9) (and .cse0 (<= ULTIMATE.start_main_~x~0 5) .cse1 (< ULTIMATE.start_main_~r~0 (* 2 ULTIMATE.start_main_~b~0)) .cse2 .cse3 (<= 0 ULTIMATE.start_main_~r~0) .cse5 .cse6 .cse7 .cse9) (let ((.cse11 (* 2 ULTIMATE.start_main_~y~0))) (and .cse0 .cse1 .cse10 .cse4 (= ULTIMATE.start_main_~b~0 .cse11) (= ULTIMATE.start_main_~a~0 2) .cse6 (<= .cse11 ULTIMATE.start_main_~r~0) .cse8)) (let ((.cse12 (* 4 ULTIMATE.start_main_~y~0))) (and .cse0 (<= .cse12 ULTIMATE.start_main_~r~0) .cse1 .cse10 (= ULTIMATE.start_main_~b~0 .cse12) (= ULTIMATE.start_main_~a~0 4) .cse4 .cse6 .cse8)))) [2021-08-26 05:13:21,665 INFO L857 garLoopResultBuilder]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2021-08-26 05:13:21,665 INFO L853 garLoopResultBuilder]: At program point L15-14(lines 52 53) the Hoare annotation is: (let ((.cse3 (<= ULTIMATE.start_main_~y~0 5)) (.cse5 (= ULTIMATE.start_main_~a~0 1)) (.cse7 (<= 0 ULTIMATE.start_main_~x~0)) (.cse9 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= ULTIMATE.start_main_~r~0 5)) (.cse2 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse4 (<= 1 ULTIMATE.start_main_~y~0)) (.cse6 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) (.cse8 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9) (let ((.cse10 (* 2 ULTIMATE.start_main_~y~0))) (and .cse0 .cse1 .cse2 .cse4 (= ULTIMATE.start_main_~b~0 .cse10) (= ULTIMATE.start_main_~a~0 2) .cse6 (<= .cse10 ULTIMATE.start_main_~r~0) .cse8)) (and .cse0 (<= ULTIMATE.start_main_~x~0 5) .cse1 .cse2 (< ULTIMATE.start_main_~r~0 (* 2 ULTIMATE.start_main_~b~0)) .cse3 (<= 0 ULTIMATE.start_main_~r~0) .cse5 .cse6 .cse7 .cse9) (let ((.cse11 (* 4 ULTIMATE.start_main_~y~0))) (and .cse0 (<= .cse11 ULTIMATE.start_main_~r~0) .cse1 .cse2 (= ULTIMATE.start_main_~b~0 .cse11) (= ULTIMATE.start_main_~a~0 4) .cse4 .cse6 .cse8)))) [2021-08-26 05:13:21,665 INFO L860 garLoopResultBuilder]: At program point L65(lines 22 66) the Hoare annotation is: true [2021-08-26 05:13:21,665 INFO L857 garLoopResultBuilder]: For program point L15-15(lines 15 18) no Hoare annotation was computed. [2021-08-26 05:13:21,666 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-26 05:13:21,666 INFO L853 garLoopResultBuilder]: At program point L15-17(lines 14 20) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= ULTIMATE.start_main_~r~0 5)) (.cse2 (<= (* 2 ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~r~0)) (.cse3 (<= 1 ULTIMATE.start_main_~y~0)) (.cse4 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) (.cse5 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0))) (or (and .cse0 .cse1 .cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse3 (= ULTIMATE.start_main_~a~0 1) .cse4 .cse5 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and .cse0 .cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse2 .cse3 (= ULTIMATE.start_main_~b~0 (* 2 ULTIMATE.start_main_~y~0)) (= ULTIMATE.start_main_~a~0 2) .cse4 .cse5))) [2021-08-26 05:13:21,666 INFO L857 garLoopResultBuilder]: For program point L15-18(lines 15 18) no Hoare annotation was computed. [2021-08-26 05:13:21,666 INFO L860 garLoopResultBuilder]: At program point L15-20(lines 14 20) the Hoare annotation is: true [2021-08-26 05:13:21,666 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-26 05:13:21,666 INFO L857 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-08-26 05:13:21,666 INFO L857 garLoopResultBuilder]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2021-08-26 05:13:21,666 INFO L857 garLoopResultBuilder]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2021-08-26 05:13:21,666 INFO L857 garLoopResultBuilder]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2021-08-26 05:13:21,667 INFO L857 garLoopResultBuilder]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2021-08-26 05:13:21,667 INFO L857 garLoopResultBuilder]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2021-08-26 05:13:21,667 INFO L857 garLoopResultBuilder]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2021-08-26 05:13:21,667 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-26 05:13:21,667 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-26 05:13:21,669 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 05:13:21,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 05:13:21 BoogieIcfgContainer [2021-08-26 05:13:21,691 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 05:13:21,691 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 05:13:21,691 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 05:13:21,691 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 05:13:21,692 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 05:13:06" (3/4) ... [2021-08-26 05:13:21,693 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-26 05:13:21,699 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-08-26 05:13:21,699 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-26 05:13:21,700 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 05:13:21,700 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 05:13:21,724 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 05:13:21,724 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 05:13:21,725 INFO L168 Benchmark]: Toolchain (without parser) took 15426.75 ms. Allocated memory was 62.9 MB in the beginning and 195.0 MB in the end (delta: 132.1 MB). Free memory was 43.5 MB in the beginning and 124.1 MB in the end (delta: -80.6 MB). Peak memory consumption was 53.2 MB. Max. memory is 16.1 GB. [2021-08-26 05:13:21,725 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 62.9 MB. Free memory was 44.5 MB in the beginning and 44.4 MB in the end (delta: 44.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 05:13:21,725 INFO L168 Benchmark]: CACSL2BoogieTranslator took 176.37 ms. Allocated memory is still 62.9 MB. Free memory was 43.3 MB in the beginning and 33.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-26 05:13:21,725 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.07 ms. Allocated memory is still 62.9 MB. Free memory was 33.3 MB in the beginning and 46.0 MB in the end (delta: -12.6 MB). Peak memory consumption was 2.9 MB. Max. memory is 16.1 GB. [2021-08-26 05:13:21,726 INFO L168 Benchmark]: Boogie Preprocessor took 38.02 ms. Allocated memory is still 62.9 MB. Free memory was 46.0 MB in the beginning and 44.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 05:13:21,726 INFO L168 Benchmark]: RCFGBuilder took 373.24 ms. Allocated memory is still 62.9 MB. Free memory was 44.6 MB in the beginning and 28.0 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-08-26 05:13:21,726 INFO L168 Benchmark]: TraceAbstraction took 14745.45 ms. Allocated memory was 62.9 MB in the beginning and 195.0 MB in the end (delta: 132.1 MB). Free memory was 27.6 MB in the beginning and 129.3 MB in the end (delta: -101.7 MB). Peak memory consumption was 104.2 MB. Max. memory is 16.1 GB. [2021-08-26 05:13:21,726 INFO L168 Benchmark]: Witness Printer took 32.98 ms. Allocated memory is still 195.0 MB. Free memory was 129.3 MB in the beginning and 124.1 MB in the end (delta: 5.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-08-26 05:13:21,727 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 62.9 MB. Free memory was 44.5 MB in the beginning and 44.4 MB in the end (delta: 44.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 176.37 ms. Allocated memory is still 62.9 MB. Free memory was 43.3 MB in the beginning and 33.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.07 ms. Allocated memory is still 62.9 MB. Free memory was 33.3 MB in the beginning and 46.0 MB in the end (delta: -12.6 MB). Peak memory consumption was 2.9 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.02 ms. Allocated memory is still 62.9 MB. Free memory was 46.0 MB in the beginning and 44.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 373.24 ms. Allocated memory is still 62.9 MB. Free memory was 44.6 MB in the beginning and 28.0 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 14745.45 ms. Allocated memory was 62.9 MB in the beginning and 195.0 MB in the end (delta: 132.1 MB). Free memory was 27.6 MB in the beginning and 129.3 MB in the end (delta: -101.7 MB). Peak memory consumption was 104.2 MB. Max. memory is 16.1 GB. * Witness Printer took 32.98 ms. Allocated memory is still 195.0 MB. Free memory was 129.3 MB in the beginning and 124.1 MB in the end (delta: 5.2 MB). Peak memory consumption was 6.3 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: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 43 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 14674.7ms, OverallIterations: 14, TraceHistogramMax: 5, EmptinessCheckTime: 16.3ms, AutomataDifference: 2618.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 2781.4ms, InitialAbstractionConstructionTime: 7.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 397 SDtfs, 1274 SDslu, 869 SDs, 0 SdLazy, 1714 SolverSat, 320 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 882.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 491 GetRequests, 349 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 1891.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=111occurred in iteration=11, InterpolantAutomatonStates: 129, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 105.3ms AutomataMinimizationTime, 14 MinimizatonAttempts, 237 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 49 NumberOfFragments, 1899 HoareAnnotationTreeSize, 10 FomulaSimplifications, 17879 FormulaSimplificationTreeSizeReduction, 185.0ms HoareSimplificationTime, 10 FomulaSimplificationsInter, 3263 FormulaSimplificationTreeSizeReductionInter, 2589.5ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 93.8ms SsaConstructionTime, 259.1ms SatisfiabilityAnalysisTime, 3900.4ms InterpolantComputationTime, 445 NumberOfCodeBlocks, 420 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 431 ConstructedInterpolants, 0 QuantifiedInterpolants, 3302 SizeOfPredicates, 88 NumberOfNonLiveVariables, 1587 ConjunctsInSsa, 214 ConjunctsInUnsatCore, 14 InterpolantComputations, 7 PerfectInterpolantSequences, 139/261 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 7 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((((((cond == 1 && r <= 5) && y <= 5) && 1 == cond) && 1 <= y) && a == 1) && x == r + q * y) && 0 <= x) && r == x) && b == y) || ((((((((((cond == 1 && x <= 5) && r <= 5) && r < 2 * b) && y <= 5) && 1 == cond) && 0 <= r) && a == 1) && x == r + q * y) && 0 <= x) && b == y)) || ((((((((cond == 1 && r <= 5) && 1 <= cond) && 1 <= y) && b == 2 * y) && a == 2) && x == r + q * y) && 2 * y <= r) && r == x)) || ((((((((cond == 1 && 4 * y <= r) && r <= 5) && 1 <= cond) && b == 4 * y) && a == 4) && 1 <= y) && x == r + q * y) && r == x) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((((cond == 1 && r <= 5) && 2 * b <= r) && 1 == cond) && 1 <= y) && a == 1) && x == r + q * y) && r == x) && b == y) || ((((((((cond == 1 && r <= 5) && 1 <= cond) && 2 * b <= r) && 1 <= y) && b == 2 * y) && a == 2) && x == r + q * y) && r == x) - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: (((((((((((cond == 1 && r <= 5) && 1 <= cond) && y <= 5) && 1 <= y) && a == 1) && x == r + q * y) && 0 <= x) && r == x) && b == y) || ((((((((cond == 1 && r <= 5) && 1 <= cond) && 1 <= y) && b == 2 * y) && a == 2) && x == r + q * y) && 2 * y <= r) && r == x)) || ((((((((((cond == 1 && x <= 5) && r <= 5) && 1 <= cond) && r < 2 * b) && y <= 5) && 0 <= r) && a == 1) && x == r + q * y) && 0 <= x) && b == y)) || ((((((((cond == 1 && 4 * y <= r) && r <= 5) && 1 <= cond) && b == 4 * y) && a == 4) && 1 <= y) && x == r + q * y) && r == x) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((((((cond == 1 && r <= 5) && y <= 5) && 1 == cond) && 1 <= y) && a == 1) && x == r + q * y) && 0 <= x) && r == x) && b == y) || ((((1 <= cond && r < 2 * b) && a == 1) && ((((((x == r + y && cond == 1) && x <= 5) && 0 <= r) && q == 1) || ((((cond == 1 && x <= 5) && q == 2) && x == r + 2 * y) && 2 * y <= x)) || ((((q == 4 && cond == 1) && x <= 5) && r + 4 * y == x) && 0 <= r))) && b == y)) || ((((((((cond == 1 && r <= 5) && 1 <= cond) && 1 <= y) && b == 2 * y) && a == 2) && x == r + q * y) && 2 * y <= r) && r == x)) || ((((((((cond == 1 && 4 * y <= r) && r <= 5) && 1 <= cond) && b == 4 * y) && a == 4) && 1 <= y) && x == r + q * y) && r == x) - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: (((((r < y && 1 == cond) && (((((((((cond == 1 && x <= 5) && r <= 5) && y <= 5) && 1 <= y) && b == 2 * y) && a == 2) && 0 <= x) || (((((((cond == 1 && x <= 5) && r <= 5) && y <= 5) && 1 <= y) && a == 1) && 0 <= x) && b == y)) || (((((((cond == 1 && x <= 5) && r <= 5) && b == 4 * y) && a == 4) && 1 <= y) && 4 * y <= 5) && 0 <= x))) && x == r + q * y) && b == y) || ((-1 + r * -1) / -2 < y + 1 && ((((((1 <= cond && q == 2) && x == r + 2 * y) && (((((((((cond == 1 && x <= 5) && r <= 5) && y <= 5) && 1 <= y) && b == 2 * y) && a == 2) && 0 <= x) || (((((((cond == 1 && x <= 5) && r <= 5) && y <= 5) && 1 <= y) && a == 1) && 0 <= x) && b == y)) || (((((((cond == 1 && x <= 5) && r <= 5) && b == 4 * y) && a == 4) && 1 <= y) && 4 * y <= 5) && 0 <= x))) && 2 * y <= x) || ((((q == 4 && 4 * y <= x) && 1 <= cond) && r + 4 * y == x) && (((((((((cond == 1 && x <= 5) && r <= 5) && y <= 5) && 1 <= y) && b == 2 * y) && a == 2) && 0 <= x) || (((((((cond == 1 && x <= 5) && r <= 5) && y <= 5) && 1 <= y) && a == 1) && 0 <= x) && b == y)) || (((((((cond == 1 && x <= 5) && r <= 5) && b == 4 * y) && a == 4) && 1 <= y) && 4 * y <= 5) && 0 <= x)))) || ((((((((x == r + y && cond == 1) && x <= 5) && 1 <= cond) && y <= 5) && a == 1) && q == 1) && 0 <= x) && b == y)))) || (((((((cond == 1 && r <= 5) && 1 <= cond) && y <= 5) && 1 <= y) && x == r + q * y) && 0 <= x) && r == x) - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: (((((((((((cond == 1 && 4 * y <= r) && r <= 5) && 1 <= cond) && b == 4 * y) && y <= 5) && a == 4) && 1 <= y) && q == 0) && r == x) || (((((((((cond == 1 && r <= 5) && 1 <= cond) && y <= 5) && 1 <= y) && a == 1) && x == r + q * y) && 0 <= x) && r == x) && b == y)) || (((((((((cond == 1 && r <= 5) && 1 <= cond) && y <= 5) && 1 <= y) && b == 2 * y) && a == 2) && x == r + q * y) && 2 * y <= r) && r == x)) || (((r < 2 * b && (((((((cond == 1 && x <= 5) && 1 <= cond) && q == 2) && x == r + 2 * y) && 2 * y <= x) || (((((x == r + y && cond == 1) && x <= 5) && 1 <= cond) && 0 <= r) && q == 1)) || (((((q == 4 && cond == 1) && x <= 5) && 1 <= cond) && r + 4 * y == x) && 0 <= r))) && a == 1) && b == y) - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: (((((((((a == 0 && cond == 1) && b == 0) && r <= 5) && y <= 5) && 1 <= y) && x == r + q * y) && 0 <= x) && r == x) || (((r < y && (((((((((cond == 1 && x <= 5) && r <= 5) && 1 <= cond) && b == 4 * y) && a == 4) && 1 <= y) && 4 * y <= 5) && 0 <= x) || ((((x <= 5 && r <= 5) && 1 <= y) && 0 <= x) && (((((cond == 1 && 1 <= cond) && y <= 5) && a == 1) && b == y) || ((((cond == 1 && 1 <= cond) && y <= 5) && b == 2 * y) && a == 2))))) && x == r + q * y) && b == y)) || ((-1 + r * -1) / -2 < y + 1 && (((((q == 2 && x == r + 2 * y) && (((((((((cond == 1 && x <= 5) && r <= 5) && 1 <= cond) && b == 4 * y) && a == 4) && 1 <= y) && 4 * y <= 5) && 0 <= x) || ((((x <= 5 && r <= 5) && 1 <= y) && 0 <= x) && (((((cond == 1 && 1 <= cond) && y <= 5) && a == 1) && b == y) || ((((cond == 1 && 1 <= cond) && y <= 5) && b == 2 * y) && a == 2))))) && 2 * y <= x) || (((((x == r + y && x <= 5) && q == 1) && 0 <= x) && (((((cond == 1 && 1 <= cond) && y <= 5) && a == 1) && b == y) || ((((cond == 1 && 1 <= cond) && y <= 5) && b == 2 * y) && a == 2))) && b == y)) || (((q == 4 && 4 * y <= x) && r + 4 * y == x) && (((((((((cond == 1 && x <= 5) && r <= 5) && 1 <= cond) && b == 4 * y) && a == 4) && 1 <= y) && 4 * y <= 5) && 0 <= x) || ((((x <= 5 && r <= 5) && 1 <= y) && 0 <= x) && (((((cond == 1 && 1 <= cond) && y <= 5) && a == 1) && b == y) || ((((cond == 1 && 1 <= cond) && y <= 5) && b == 2 * y) && a == 2))))))) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((-1 + r * -1) / -2 < y + 1 && (((((q == 4 && 4 * y <= x) && ((((((((((cond == 1 && x <= 5) && r <= 5) && 1 <= cond) && y <= 5) && 1 <= y) && a == 1) && 0 <= x) && b == y) || ((((((((cond == 1 && x <= 5) && r <= 5) && 1 <= cond) && y <= 5) && 1 <= y) && b == 2 * y) && a == 2) && 0 <= x)) || ((((((((cond == 1 && x <= 5) && r <= 5) && 1 <= cond) && b == 4 * y) && a == 4) && 1 <= y) && 4 * y <= 5) && 0 <= x))) && r + 4 * y == x) || (((q == 2 && x == r + 2 * y) && ((((((((((cond == 1 && x <= 5) && r <= 5) && 1 <= cond) && y <= 5) && 1 <= y) && a == 1) && 0 <= x) && b == y) || ((((((((cond == 1 && x <= 5) && r <= 5) && 1 <= cond) && y <= 5) && 1 <= y) && b == 2 * y) && a == 2) && 0 <= x)) || ((((((((cond == 1 && x <= 5) && r <= 5) && 1 <= cond) && b == 4 * y) && a == 4) && 1 <= y) && 4 * y <= 5) && 0 <= x))) && 2 * y <= x)) || ((((((((x == r + y && cond == 1) && x <= 5) && 1 <= cond) && y <= 5) && a == 1) && q == 1) && 0 <= x) && b == y))) || ((((((cond == 1 && r <= 5) && y <= 5) && 1 <= y) && x == r + q * y) && 0 <= x) && r == x)) || ((((((((((((((cond == 1 && x <= 5) && r <= 5) && 1 <= cond) && y <= 5) && 1 <= y) && a == 1) && 0 <= x) && b == y) || ((((((((cond == 1 && x <= 5) && r <= 5) && 1 <= cond) && y <= 5) && 1 <= y) && b == 2 * y) && a == 2) && 0 <= x)) || ((((((((cond == 1 && x <= 5) && r <= 5) && 1 <= cond) && b == 4 * y) && a == 4) && 1 <= y) && 4 * y <= 5) && 0 <= x)) && r < y) && 1 == cond) && x == r + q * y) && b == y) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-08-26 05:13:21,748 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...