./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.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 c9a431cc3dce37048e7415db5e7aefee11ebb182 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 12:54:51,480 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 12:54:51,482 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 12:54:51,507 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 12:54:51,507 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 12:54:51,508 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 12:54:51,509 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 12:54:51,511 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 12:54:51,513 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 12:54:51,514 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 12:54:51,515 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 12:54:51,516 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 12:54:51,516 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 12:54:51,517 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 12:54:51,518 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 12:54:51,519 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 12:54:51,520 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 12:54:51,520 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 12:54:51,522 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 12:54:51,524 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 12:54:51,525 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 12:54:51,526 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 12:54:51,527 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 12:54:51,528 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 12:54:51,530 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 12:54:51,531 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 12:54:51,531 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 12:54:51,532 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 12:54:51,532 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 12:54:51,533 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 12:54:51,533 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 12:54:51,534 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 12:54:51,535 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 12:54:51,535 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 12:54:51,536 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 12:54:51,540 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 12:54:51,541 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 12:54:51,542 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 12:54:51,542 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 12:54:51,542 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 12:54:51,543 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 12:54:51,544 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 12:54:51,581 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 12:54:51,582 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 12:54:51,583 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 12:54:51,583 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 12:54:51,584 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 12:54:51,585 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 12:54:51,585 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 12:54:51,585 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 12:54:51,585 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 12:54:51,585 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 12:54:51,586 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 12:54:51,586 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 12:54:51,587 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 12:54:51,587 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 12:54:51,587 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 12:54:51,587 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 12:54:51,587 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 12:54:51,587 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 12:54:51,588 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 12:54:51,588 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 12:54:51,588 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 12:54:51,599 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 12:54:51,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 12:54:51,599 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 12:54:51,599 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 12:54:51,600 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 12:54:51,600 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 12:54:51,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 12:54:51,600 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 12:54:51,600 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 12:54:51,600 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9a431cc3dce37048e7415db5e7aefee11ebb182 [2021-08-29 12:54:51,936 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 12:54:51,956 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 12:54:51,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 12:54:51,960 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 12:54:51,961 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 12:54:51,962 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c [2021-08-29 12:54:52,028 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a56b0344/35ea184e4d514321accf1921183305d2/FLAG144ba1940 [2021-08-29 12:54:52,463 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 12:54:52,463 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c [2021-08-29 12:54:52,470 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a56b0344/35ea184e4d514321accf1921183305d2/FLAG144ba1940 [2021-08-29 12:54:52,859 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a56b0344/35ea184e4d514321accf1921183305d2 [2021-08-29 12:54:52,862 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 12:54:52,863 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 12:54:52,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 12:54:52,866 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 12:54:52,869 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 12:54:52,870 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 12:54:52" (1/1) ... [2021-08-29 12:54:52,872 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@222b6091 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:54:52, skipping insertion in model container [2021-08-29 12:54:52,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 12:54:52" (1/1) ... [2021-08-29 12:54:52,881 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 12:54:52,896 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 12:54:53,002 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/egcd3-ll_valuebound2.c[490,503] [2021-08-29 12:54:53,024 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 12:54:53,031 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 12:54:53,041 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/egcd3-ll_valuebound2.c[490,503] [2021-08-29 12:54:53,049 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 12:54:53,060 INFO L208 MainTranslator]: Completed translation [2021-08-29 12:54:53,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:54:53 WrapperNode [2021-08-29 12:54:53,061 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 12:54:53,065 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 12:54:53,066 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 12:54:53,066 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 12:54:53,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:54:53" (1/1) ... [2021-08-29 12:54:53,085 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:54:53" (1/1) ... [2021-08-29 12:54:53,116 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 12:54:53,117 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 12:54:53,117 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 12:54:53,117 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 12:54:53,123 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:54:53" (1/1) ... [2021-08-29 12:54:53,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:54:53" (1/1) ... [2021-08-29 12:54:53,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:54:53" (1/1) ... [2021-08-29 12:54:53,144 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:54:53" (1/1) ... [2021-08-29 12:54:53,147 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:54:53" (1/1) ... [2021-08-29 12:54:53,160 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:54:53" (1/1) ... [2021-08-29 12:54:53,164 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:54:53" (1/1) ... [2021-08-29 12:54:53,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 12:54:53,174 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 12:54:53,174 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 12:54:53,174 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 12:54:53,175 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:54:53" (1/1) ... [2021-08-29 12:54:53,181 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 12:54:53,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:54:53,206 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-29 12:54:53,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-29 12:54:53,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 12:54:53,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 12:54:53,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 12:54:53,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 12:54:53,440 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 12:54:53,441 INFO L299 CfgBuilder]: Removed 25 assume(true) statements. [2021-08-29 12:54:53,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 12:54:53 BoogieIcfgContainer [2021-08-29 12:54:53,443 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 12:54:53,445 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 12:54:53,445 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 12:54:53,447 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 12:54:53,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 12:54:52" (1/3) ... [2021-08-29 12:54:53,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54e19a2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 12:54:53, skipping insertion in model container [2021-08-29 12:54:53,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:54:53" (2/3) ... [2021-08-29 12:54:53,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54e19a2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 12:54:53, skipping insertion in model container [2021-08-29 12:54:53,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 12:54:53" (3/3) ... [2021-08-29 12:54:53,455 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd3-ll_valuebound2.c [2021-08-29 12:54:53,459 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 12:54:53,460 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-08-29 12:54:53,510 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 12:54:53,520 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-29 12:54:53,521 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-08-29 12:54:53,566 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 35 states have (on average 1.6571428571428573) internal successors, (58), 40 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) [2021-08-29 12:54:53,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-29 12:54:53,590 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:54:53,590 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:54:53,591 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-29 12:54:53,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:54:53,597 INFO L82 PathProgramCache]: Analyzing trace with hash -174497841, now seen corresponding path program 1 times [2021-08-29 12:54:53,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:54:53,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197216708] [2021-08-29 12:54:53,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:54:53,607 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:54:53,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:54:53,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:54:53,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:54:53,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197216708] [2021-08-29 12:54:53,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197216708] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 12:54:53,776 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 12:54:53,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 12:54:53,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46966073] [2021-08-29 12:54:53,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 12:54:53,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:54:53,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 12:54:53,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 12:54:53,819 INFO L87 Difference]: Start difference. First operand has 41 states, 35 states have (on average 1.6571428571428573) internal successors, (58), 40 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 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:54:53,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:54:53,930 INFO L93 Difference]: Finished difference Result 79 states and 112 transitions. [2021-08-29 12:54:53,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 12:54:53,932 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-08-29 12:54:53,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:54:53,938 INFO L225 Difference]: With dead ends: 79 [2021-08-29 12:54:53,939 INFO L226 Difference]: Without dead ends: 37 [2021-08-29 12:54:53,941 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 12:54:53,958 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 81.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.44ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 94.00ms IncrementalHoareTripleChecker+Time [2021-08-29 12:54:53,959 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 43 Unknown, 0 Unchecked, 0.44ms Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 94.00ms Time] [2021-08-29 12:54:53,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-08-29 12:54:54,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-08-29 12:54:54,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.21875) internal successors, (39), 36 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) [2021-08-29 12:54:54,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2021-08-29 12:54:54,004 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 14 [2021-08-29 12:54:54,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:54:54,004 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2021-08-29 12:54:54,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:54:54,004 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2021-08-29 12:54:54,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-29 12:54:54,005 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:54:54,005 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:54:54,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 12:54:54,015 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-29 12:54:54,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:54:54,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1454170515, now seen corresponding path program 1 times [2021-08-29 12:54:54,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:54:54,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938655591] [2021-08-29 12:54:54,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:54:54,017 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:54:54,033 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:54:54,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [80258590] [2021-08-29 12:54:54,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:54:54,034 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:54:54,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:54:54,035 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 12:54:54,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-29 12:54:54,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:54:54,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-29 12:54:54,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:54:54,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:54:54,199 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 12:54:54,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:54:54,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938655591] [2021-08-29 12:54:54,200 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:54:54,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80258590] [2021-08-29 12:54:54,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80258590] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 12:54:54,201 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 12:54:54,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-29 12:54:54,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247856839] [2021-08-29 12:54:54,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 12:54:54,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:54:54,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 12:54:54,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-29 12:54:54,204 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:54:54,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:54:54,404 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2021-08-29 12:54:54,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 12:54:54,404 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-08-29 12:54:54,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:54:54,405 INFO L225 Difference]: With dead ends: 64 [2021-08-29 12:54:54,406 INFO L226 Difference]: Without dead ends: 60 [2021-08-29 12:54:54,406 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.51ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-29 12:54:54,407 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 132 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 115.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.00ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 135.95ms IncrementalHoareTripleChecker+Time [2021-08-29 12:54:54,408 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 0 Invalid, 94 Unknown, 0 Unchecked, 3.00ms Time], IncrementalHoareTripleChecker [2 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 135.95ms Time] [2021-08-29 12:54:54,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-08-29 12:54:54,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 39. [2021-08-29 12:54:54,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 38 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:54:54,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-08-29 12:54:54,415 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 15 [2021-08-29 12:54:54,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:54:54,415 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-08-29 12:54:54,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:54:54,416 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-08-29 12:54:54,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-29 12:54:54,423 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:54:54,424 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:54:54,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-29 12:54:54,633 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 [2021-08-29 12:54:54,633 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-29 12:54:54,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:54:54,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1580206288, now seen corresponding path program 1 times [2021-08-29 12:54:54,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:54:54,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591061890] [2021-08-29 12:54:54,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:54:54,634 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:54:54,663 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:54:54,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2028734020] [2021-08-29 12:54:54,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:54:54,663 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:54:54,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:54:54,665 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 12:54:54,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-29 12:54:54,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:54:54,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 28 conjunts are in the unsatisfiable core [2021-08-29 12:54:54,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:54:55,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:54:55,338 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 12:54:55,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:54:55,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591061890] [2021-08-29 12:54:55,339 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:54:55,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028734020] [2021-08-29 12:54:55,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028734020] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 12:54:55,342 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 12:54:55,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-08-29 12:54:55,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800105192] [2021-08-29 12:54:55,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-29 12:54:55,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:54:55,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-29 12:54:55,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-08-29 12:54:55,347 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:54:55,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:54:55,953 INFO L93 Difference]: Finished difference Result 79 states and 86 transitions. [2021-08-29 12:54:55,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-29 12:54:55,954 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-08-29 12:54:55,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:54:55,955 INFO L225 Difference]: With dead ends: 79 [2021-08-29 12:54:55,955 INFO L226 Difference]: Without dead ends: 77 [2021-08-29 12:54:55,956 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 547.26ms TimeCoverageRelationStatistics Valid=151, Invalid=269, Unknown=0, NotChecked=0, Total=420 [2021-08-29 12:54:55,957 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 264 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 143.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.25ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 185.58ms IncrementalHoareTripleChecker+Time [2021-08-29 12:54:55,957 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 0 Invalid, 257 Unknown, 0 Unchecked, 4.25ms Time], IncrementalHoareTripleChecker [21 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 185.58ms Time] [2021-08-29 12:54:55,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-08-29 12:54:55,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 51. [2021-08-29 12:54:55,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 50 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) [2021-08-29 12:54:55,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2021-08-29 12:54:55,968 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 17 [2021-08-29 12:54:55,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:54:55,968 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2021-08-29 12:54:55,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:54:55,969 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2021-08-29 12:54:55,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-29 12:54:55,971 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:54:55,971 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:54:55,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-29 12:54:56,194 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 [2021-08-29 12:54:56,194 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-29 12:54:56,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:54:56,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1840022701, now seen corresponding path program 1 times [2021-08-29 12:54:56,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:54:56,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201864811] [2021-08-29 12:54:56,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:54:56,195 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:54:56,209 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:54:56,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1844920407] [2021-08-29 12:54:56,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:54:56,209 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:54:56,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:54:56,217 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 12:54:56,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-29 12:54:56,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:54:56,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 23 conjunts are in the unsatisfiable core [2021-08-29 12:54:56,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:54:56,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:54:56,719 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 12:54:56,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:54:56,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201864811] [2021-08-29 12:54:56,720 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:54:56,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844920407] [2021-08-29 12:54:56,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844920407] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 12:54:56,720 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 12:54:56,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-29 12:54:56,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129229851] [2021-08-29 12:54:56,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-29 12:54:56,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:54:56,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-29 12:54:56,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-08-29 12:54:56,722 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:54:57,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:54:57,117 INFO L93 Difference]: Finished difference Result 75 states and 82 transitions. [2021-08-29 12:54:57,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-29 12:54:57,118 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-08-29 12:54:57,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:54:57,118 INFO L225 Difference]: With dead ends: 75 [2021-08-29 12:54:57,119 INFO L226 Difference]: Without dead ends: 73 [2021-08-29 12:54:57,119 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 279.07ms TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2021-08-29 12:54:57,120 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 150 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 158.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.86ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 190.07ms IncrementalHoareTripleChecker+Time [2021-08-29 12:54:57,120 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 0 Invalid, 310 Unknown, 0 Unchecked, 1.86ms Time], IncrementalHoareTripleChecker [14 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 190.07ms Time] [2021-08-29 12:54:57,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-08-29 12:54:57,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 51. [2021-08-29 12:54:57,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.2391304347826086) internal successors, (57), 50 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) [2021-08-29 12:54:57,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2021-08-29 12:54:57,134 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 19 [2021-08-29 12:54:57,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:54:57,135 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2021-08-29 12:54:57,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:54:57,136 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2021-08-29 12:54:57,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-29 12:54:57,137 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:54:57,137 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:54:57,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-29 12:54:57,351 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 [2021-08-29 12:54:57,352 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-29 12:54:57,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:54:57,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1412177226, now seen corresponding path program 1 times [2021-08-29 12:54:57,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:54:57,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608576162] [2021-08-29 12:54:57,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:54:57,353 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:54:57,363 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:54:57,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1003657725] [2021-08-29 12:54:57,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:54:57,364 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:54:57,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:54:57,372 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 12:54:57,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-29 12:54:57,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:54:57,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-29 12:54:57,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:54:57,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:54:57,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 12:54:57,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:54:57,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:54:57,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608576162] [2021-08-29 12:54:57,578 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:54:57,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003657725] [2021-08-29 12:54:57,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003657725] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 12:54:57,578 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 12:54:57,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-08-29 12:54:57,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305141140] [2021-08-29 12:54:57,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-29 12:54:57,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:54:57,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-29 12:54:57,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-08-29 12:54:57,581 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:54:57,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:54:57,795 INFO L93 Difference]: Finished difference Result 140 states and 157 transitions. [2021-08-29 12:54:57,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-29 12:54:57,796 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-08-29 12:54:57,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:54:57,797 INFO L225 Difference]: With dead ends: 140 [2021-08-29 12:54:57,797 INFO L226 Difference]: Without dead ends: 136 [2021-08-29 12:54:57,797 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 73.85ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-08-29 12:54:57,798 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 173 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 123.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.28ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 154.09ms IncrementalHoareTripleChecker+Time [2021-08-29 12:54:57,798 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 0 Invalid, 283 Unknown, 0 Unchecked, 2.28ms Time], IncrementalHoareTripleChecker [11 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 154.09ms Time] [2021-08-29 12:54:57,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-08-29 12:54:57,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 75. [2021-08-29 12:54:57,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 70 states have (on average 1.3) internal successors, (91), 74 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:54:57,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 91 transitions. [2021-08-29 12:54:57,809 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 91 transitions. Word has length 20 [2021-08-29 12:54:57,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:54:57,809 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 91 transitions. [2021-08-29 12:54:57,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:54:57,810 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 91 transitions. [2021-08-29 12:54:57,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-29 12:54:57,810 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:54:57,810 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:54:57,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-29 12:54:58,024 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 [2021-08-29 12:54:58,025 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-29 12:54:58,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:54:58,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1264867958, now seen corresponding path program 1 times [2021-08-29 12:54:58,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:54:58,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413999208] [2021-08-29 12:54:58,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:54:58,026 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:54:58,037 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:54:58,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [793456596] [2021-08-29 12:54:58,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:54:58,038 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:54:58,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:54:58,039 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) [2021-08-29 12:54:58,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-29 12:54:58,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:54:58,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-29 12:54:58,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:54:58,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:54:58,241 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 12:54:58,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:54:58,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413999208] [2021-08-29 12:54:58,241 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:54:58,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793456596] [2021-08-29 12:54:58,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793456596] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 12:54:58,242 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 12:54:58,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-29 12:54:58,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148088602] [2021-08-29 12:54:58,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-29 12:54:58,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:54:58,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-29 12:54:58,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-29 12:54:58,244 INFO L87 Difference]: Start difference. First operand 75 states and 91 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:54:58,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:54:58,445 INFO L93 Difference]: Finished difference Result 95 states and 110 transitions. [2021-08-29 12:54:58,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-29 12:54:58,448 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-08-29 12:54:58,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:54:58,449 INFO L225 Difference]: With dead ends: 95 [2021-08-29 12:54:58,449 INFO L226 Difference]: Without dead ends: 93 [2021-08-29 12:54:58,449 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 79.27ms TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-08-29 12:54:58,450 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 84 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 109.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.79ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 131.37ms IncrementalHoareTripleChecker+Time [2021-08-29 12:54:58,450 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 0 Invalid, 223 Unknown, 0 Unchecked, 1.79ms Time], IncrementalHoareTripleChecker [6 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 131.37ms Time] [2021-08-29 12:54:58,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-08-29 12:54:58,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 84. [2021-08-29 12:54:58,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 79 states have (on average 1.2911392405063291) internal successors, (102), 83 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:54:58,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 102 transitions. [2021-08-29 12:54:58,470 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 102 transitions. Word has length 21 [2021-08-29 12:54:58,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:54:58,470 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 102 transitions. [2021-08-29 12:54:58,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:54:58,471 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 102 transitions. [2021-08-29 12:54:58,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-29 12:54:58,471 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:54:58,472 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:54:58,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-29 12:54:58,692 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 [2021-08-29 12:54:58,693 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-29 12:54:58,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:54:58,694 INFO L82 PathProgramCache]: Analyzing trace with hash 94063923, now seen corresponding path program 1 times [2021-08-29 12:54:58,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:54:58,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379887031] [2021-08-29 12:54:58,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:54:58,694 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:54:58,721 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:54:58,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1907015015] [2021-08-29 12:54:58,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:54:58,723 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:54:58,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:54:58,724 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) [2021-08-29 12:54:58,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-08-29 12:54:58,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:54:58,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 32 conjunts are in the unsatisfiable core [2021-08-29 12:54:58,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:54:59,133 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:54:59,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 12:54:59,257 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:54:59,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:54:59,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379887031] [2021-08-29 12:54:59,257 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:54:59,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907015015] [2021-08-29 12:54:59,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907015015] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 12:54:59,258 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 12:54:59,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 15 [2021-08-29 12:54:59,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522505961] [2021-08-29 12:54:59,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-29 12:54:59,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:54:59,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-29 12:54:59,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-08-29 12:54:59,260 INFO L87 Difference]: Start difference. First operand 84 states and 102 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 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) [2021-08-29 12:54:59,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:54:59,869 INFO L93 Difference]: Finished difference Result 144 states and 165 transitions. [2021-08-29 12:54:59,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-08-29 12:54:59,871 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 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 22 [2021-08-29 12:54:59,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:54:59,872 INFO L225 Difference]: With dead ends: 144 [2021-08-29 12:54:59,872 INFO L226 Difference]: Without dead ends: 142 [2021-08-29 12:54:59,872 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 379.40ms TimeCoverageRelationStatistics Valid=190, Invalid=566, Unknown=0, NotChecked=0, Total=756 [2021-08-29 12:54:59,873 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 255 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 266.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.82ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 334.47ms IncrementalHoareTripleChecker+Time [2021-08-29 12:54:59,873 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 0 Invalid, 481 Unknown, 0 Unchecked, 2.82ms Time], IncrementalHoareTripleChecker [42 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 334.47ms Time] [2021-08-29 12:54:59,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-08-29 12:54:59,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 116. [2021-08-29 12:54:59,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 111 states have (on average 1.3153153153153154) internal successors, (146), 115 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:54:59,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 146 transitions. [2021-08-29 12:54:59,888 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 146 transitions. Word has length 22 [2021-08-29 12:54:59,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:54:59,889 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 146 transitions. [2021-08-29 12:54:59,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 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) [2021-08-29 12:54:59,889 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 146 transitions. [2021-08-29 12:54:59,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-29 12:54:59,889 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:54:59,890 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:54:59,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-08-29 12:55:00,108 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 [2021-08-29 12:55:00,109 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-29 12:55:00,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:55:00,109 INFO L82 PathProgramCache]: Analyzing trace with hash 62520889, now seen corresponding path program 1 times [2021-08-29 12:55:00,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:55:00,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340274799] [2021-08-29 12:55:00,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:55:00,110 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:55:00,120 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:55:00,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2046987328] [2021-08-29 12:55:00,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:55:00,120 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:55:00,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:55:00,130 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) [2021-08-29 12:55:00,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-08-29 12:55:00,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:55:00,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-29 12:55:00,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:55:00,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:55:00,249 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 12:55:00,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:55:00,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340274799] [2021-08-29 12:55:00,250 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:55:00,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046987328] [2021-08-29 12:55:00,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046987328] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 12:55:00,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 12:55:00,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 12:55:00,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130975003] [2021-08-29 12:55:00,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 12:55:00,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:55:00,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 12:55:00,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 12:55:00,256 INFO L87 Difference]: Start difference. First operand 116 states and 146 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:55:00,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:55:00,373 INFO L93 Difference]: Finished difference Result 226 states and 287 transitions. [2021-08-29 12:55:00,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 12:55:00,374 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-08-29 12:55:00,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:55:00,378 INFO L225 Difference]: With dead ends: 226 [2021-08-29 12:55:00,378 INFO L226 Difference]: Without dead ends: 224 [2021-08-29 12:55:00,379 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.06ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 12:55:00,380 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 24 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 64.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.61ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 86.89ms IncrementalHoareTripleChecker+Time [2021-08-29 12:55:00,380 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 0 Invalid, 134 Unknown, 0 Unchecked, 0.61ms Time], IncrementalHoareTripleChecker [3 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 86.89ms Time] [2021-08-29 12:55:00,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-08-29 12:55:00,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 164. [2021-08-29 12:55:00,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 159 states have (on average 1.2893081761006289) internal successors, (205), 163 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:55:00,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 205 transitions. [2021-08-29 12:55:00,415 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 205 transitions. Word has length 23 [2021-08-29 12:55:00,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:55:00,415 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 205 transitions. [2021-08-29 12:55:00,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:55:00,415 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 205 transitions. [2021-08-29 12:55:00,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-29 12:55:00,416 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:55:00,416 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:55:00,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-08-29 12:55:00,635 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 [2021-08-29 12:55:00,635 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-29 12:55:00,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:55:00,635 INFO L82 PathProgramCache]: Analyzing trace with hash 201274102, now seen corresponding path program 1 times [2021-08-29 12:55:00,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:55:00,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683196771] [2021-08-29 12:55:00,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:55:00,636 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:55:00,650 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:55:00,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1313730752] [2021-08-29 12:55:00,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:55:00,651 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:55:00,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:55:00,657 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) [2021-08-29 12:55:00,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-08-29 12:55:00,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:55:00,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 42 conjunts are in the unsatisfiable core [2021-08-29 12:55:00,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:55:01,122 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:55:01,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 12:55:01,314 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:55:01,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:55:01,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683196771] [2021-08-29 12:55:01,314 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:55:01,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313730752] [2021-08-29 12:55:01,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313730752] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 12:55:01,315 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 12:55:01,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 16 [2021-08-29 12:55:01,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227098534] [2021-08-29 12:55:01,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-29 12:55:01,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:55:01,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-29 12:55:01,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-08-29 12:55:01,316 INFO L87 Difference]: Start difference. First operand 164 states and 205 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:55:08,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:55:08,638 INFO L93 Difference]: Finished difference Result 336 states and 414 transitions. [2021-08-29 12:55:08,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-08-29 12:55:08,640 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 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 24 [2021-08-29 12:55:08,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:55:08,641 INFO L225 Difference]: With dead ends: 336 [2021-08-29 12:55:08,641 INFO L226 Difference]: Without dead ends: 334 [2021-08-29 12:55:08,642 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 4834.35ms TimeCoverageRelationStatistics Valid=408, Invalid=1232, Unknown=0, NotChecked=0, Total=1640 [2021-08-29 12:55:08,643 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 477 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2499.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.51ms SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2597.84ms IncrementalHoareTripleChecker+Time [2021-08-29 12:55:08,643 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [477 Valid, 0 Invalid, 611 Unknown, 0 Unchecked, 5.51ms Time], IncrementalHoareTripleChecker [102 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 2597.84ms Time] [2021-08-29 12:55:08,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2021-08-29 12:55:08,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 234. [2021-08-29 12:55:08,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 229 states have (on average 1.2925764192139737) internal successors, (296), 233 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:55:08,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 296 transitions. [2021-08-29 12:55:08,671 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 296 transitions. Word has length 24 [2021-08-29 12:55:08,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:55:08,671 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 296 transitions. [2021-08-29 12:55:08,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:55:08,671 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 296 transitions. [2021-08-29 12:55:08,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-29 12:55:08,672 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:55:08,672 INFO L513 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] [2021-08-29 12:55:08,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-08-29 12:55:08,897 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 [2021-08-29 12:55:08,897 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-29 12:55:08,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:55:08,898 INFO L82 PathProgramCache]: Analyzing trace with hash 151041369, now seen corresponding path program 1 times [2021-08-29 12:55:08,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:55:08,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960949014] [2021-08-29 12:55:08,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:55:08,898 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:55:08,909 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:55:08,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [240312725] [2021-08-29 12:55:08,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:55:08,910 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:55:08,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:55:08,911 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) [2021-08-29 12:55:08,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-08-29 12:55:08,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:55:08,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 16 conjunts are in the unsatisfiable core [2021-08-29 12:55:08,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:55:09,109 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:55:09,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 12:55:09,179 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-29 12:55:09,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:55:09,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960949014] [2021-08-29 12:55:09,179 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:55:09,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240312725] [2021-08-29 12:55:09,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240312725] provided 1 perfect and 1 imperfect interpolant sequences [2021-08-29 12:55:09,180 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-29 12:55:09,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 10 [2021-08-29 12:55:09,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719289472] [2021-08-29 12:55:09,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 12:55:09,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:55:09,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 12:55:09,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-08-29 12:55:09,182 INFO L87 Difference]: Start difference. First operand 234 states and 296 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 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) [2021-08-29 12:55:09,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:55:09,302 INFO L93 Difference]: Finished difference Result 357 states and 455 transitions. [2021-08-29 12:55:09,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 12:55:09,303 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 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 26 [2021-08-29 12:55:09,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:55:09,304 INFO L225 Difference]: With dead ends: 357 [2021-08-29 12:55:09,305 INFO L226 Difference]: Without dead ends: 355 [2021-08-29 12:55:09,305 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 52.00ms TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-08-29 12:55:09,306 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 13 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.52ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 75.74ms IncrementalHoareTripleChecker+Time [2021-08-29 12:55:09,306 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 0 Invalid, 117 Unknown, 0 Unchecked, 0.52ms Time], IncrementalHoareTripleChecker [1 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 75.74ms Time] [2021-08-29 12:55:09,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2021-08-29 12:55:09,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 340. [2021-08-29 12:55:09,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 335 states have (on average 1.2835820895522387) internal successors, (430), 339 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:55:09,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 430 transitions. [2021-08-29 12:55:09,345 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 430 transitions. Word has length 26 [2021-08-29 12:55:09,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:55:09,346 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 430 transitions. [2021-08-29 12:55:09,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 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) [2021-08-29 12:55:09,346 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 430 transitions. [2021-08-29 12:55:09,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-08-29 12:55:09,347 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:55:09,347 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:55:09,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-08-29 12:55:09,562 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 [2021-08-29 12:55:09,563 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-29 12:55:09,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:55:09,563 INFO L82 PathProgramCache]: Analyzing trace with hash -74821968, now seen corresponding path program 2 times [2021-08-29 12:55:09,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:55:09,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119971645] [2021-08-29 12:55:09,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:55:09,563 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:55:09,575 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:55:09,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1832750815] [2021-08-29 12:55:09,576 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-29 12:55:09,576 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:55:09,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:55:09,590 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) [2021-08-29 12:55:09,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-08-29 12:55:09,629 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-29 12:55:09,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-29 12:55:09,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-29 12:55:09,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:55:09,691 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:55:09,691 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 12:55:09,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:55:09,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119971645] [2021-08-29 12:55:09,691 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:55:09,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832750815] [2021-08-29 12:55:09,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832750815] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 12:55:09,692 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 12:55:09,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-29 12:55:09,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786563282] [2021-08-29 12:55:09,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 12:55:09,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:55:09,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 12:55:09,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-29 12:55:09,694 INFO L87 Difference]: Start difference. First operand 340 states and 430 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:55:09,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:55:09,863 INFO L93 Difference]: Finished difference Result 412 states and 511 transitions. [2021-08-29 12:55:09,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 12:55:09,864 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-08-29 12:55:09,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:55:09,867 INFO L225 Difference]: With dead ends: 412 [2021-08-29 12:55:09,867 INFO L226 Difference]: Without dead ends: 207 [2021-08-29 12:55:09,871 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 16.95ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-29 12:55:09,872 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 62 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 83.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.99ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 104.24ms IncrementalHoareTripleChecker+Time [2021-08-29 12:55:09,872 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 0 Invalid, 208 Unknown, 0 Unchecked, 0.99ms Time], IncrementalHoareTripleChecker [1 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 104.24ms Time] [2021-08-29 12:55:09,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-08-29 12:55:09,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 189. [2021-08-29 12:55:09,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 184 states have (on average 1.233695652173913) internal successors, (227), 188 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:55:09,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 227 transitions. [2021-08-29 12:55:09,895 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 227 transitions. Word has length 27 [2021-08-29 12:55:09,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:55:09,895 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 227 transitions. [2021-08-29 12:55:09,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:55:09,895 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 227 transitions. [2021-08-29 12:55:09,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-08-29 12:55:09,901 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:55:09,902 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:55:09,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-08-29 12:55:10,113 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 [2021-08-29 12:55:10,114 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-29 12:55:10,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:55:10,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1112899551, now seen corresponding path program 1 times [2021-08-29 12:55:10,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:55:10,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068979965] [2021-08-29 12:55:10,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:55:10,115 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:55:10,123 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:55:10,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [712818375] [2021-08-29 12:55:10,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:55:10,123 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:55:10,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:55:10,125 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) [2021-08-29 12:55:10,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-08-29 12:55:10,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:55:10,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 47 conjunts are in the unsatisfiable core [2021-08-29 12:55:10,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:55:10,693 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:55:10,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 12:55:11,046 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:55:11,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:55:11,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068979965] [2021-08-29 12:55:11,047 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:55:11,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712818375] [2021-08-29 12:55:11,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712818375] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 12:55:11,047 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 12:55:11,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-08-29 12:55:11,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445444720] [2021-08-29 12:55:11,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-29 12:55:11,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:55:11,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-29 12:55:11,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-08-29 12:55:11,048 INFO L87 Difference]: Start difference. First operand 189 states and 227 transitions. Second operand has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:55:15,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:55:15,999 INFO L93 Difference]: Finished difference Result 496 states and 582 transitions. [2021-08-29 12:55:15,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-08-29 12:55:15,999 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-08-29 12:55:16,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:55:16,001 INFO L225 Difference]: With dead ends: 496 [2021-08-29 12:55:16,002 INFO L226 Difference]: Without dead ends: 484 [2021-08-29 12:55:16,003 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 1264.63ms TimeCoverageRelationStatistics Valid=478, Invalid=1778, Unknown=0, NotChecked=0, Total=2256 [2021-08-29 12:55:16,003 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 431 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3614.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.03ms SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3767.31ms IncrementalHoareTripleChecker+Time [2021-08-29 12:55:16,004 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [431 Valid, 0 Invalid, 1054 Unknown, 0 Unchecked, 7.03ms Time], IncrementalHoareTripleChecker [139 Valid, 915 Invalid, 0 Unknown, 0 Unchecked, 3767.31ms Time] [2021-08-29 12:55:16,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2021-08-29 12:55:16,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 293. [2021-08-29 12:55:16,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 288 states have (on average 1.2291666666666667) internal successors, (354), 292 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:55:16,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 354 transitions. [2021-08-29 12:55:16,050 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 354 transitions. Word has length 32 [2021-08-29 12:55:16,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:55:16,051 INFO L470 AbstractCegarLoop]: Abstraction has 293 states and 354 transitions. [2021-08-29 12:55:16,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:55:16,051 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 354 transitions. [2021-08-29 12:55:16,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-08-29 12:55:16,052 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:55:16,052 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:55:16,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-08-29 12:55:16,264 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 [2021-08-29 12:55:16,265 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-29 12:55:16,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:55:16,265 INFO L82 PathProgramCache]: Analyzing trace with hash -986732336, now seen corresponding path program 1 times [2021-08-29 12:55:16,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:55:16,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987012202] [2021-08-29 12:55:16,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:55:16,266 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:55:16,280 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:55:16,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [484566110] [2021-08-29 12:55:16,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:55:16,283 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:55:16,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:55:16,291 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) [2021-08-29 12:55:16,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-08-29 12:55:16,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:55:16,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 31 conjunts are in the unsatisfiable core [2021-08-29 12:55:16,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:55:16,934 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:55:16,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 12:55:17,080 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:55:17,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:55:17,081 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987012202] [2021-08-29 12:55:17,081 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:55:17,081 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484566110] [2021-08-29 12:55:17,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484566110] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 12:55:17,081 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 12:55:17,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6] total 16 [2021-08-29 12:55:17,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442581713] [2021-08-29 12:55:17,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-29 12:55:17,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:55:17,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-29 12:55:17,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-08-29 12:55:17,083 INFO L87 Difference]: Start difference. First operand 293 states and 354 transitions. Second operand has 16 states, 16 states have (on average 3.8125) internal successors, (61), 16 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:55:17,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:55:17,740 INFO L93 Difference]: Finished difference Result 446 states and 542 transitions. [2021-08-29 12:55:17,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-08-29 12:55:17,741 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.8125) internal successors, (61), 16 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-08-29 12:55:17,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:55:17,743 INFO L225 Difference]: With dead ends: 446 [2021-08-29 12:55:17,743 INFO L226 Difference]: Without dead ends: 314 [2021-08-29 12:55:17,745 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 476.72ms TimeCoverageRelationStatistics Valid=216, Invalid=714, Unknown=0, NotChecked=0, Total=930 [2021-08-29 12:55:17,745 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 215 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 264.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.37ms SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 307.96ms IncrementalHoareTripleChecker+Time [2021-08-29 12:55:17,746 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 0 Invalid, 522 Unknown, 0 Unchecked, 2.37ms Time], IncrementalHoareTripleChecker [44 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 307.96ms Time] [2021-08-29 12:55:17,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-08-29 12:55:17,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 250. [2021-08-29 12:55:17,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 246 states have (on average 1.1829268292682926) internal successors, (291), 249 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:55:17,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 291 transitions. [2021-08-29 12:55:17,783 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 291 transitions. Word has length 32 [2021-08-29 12:55:17,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:55:17,783 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 291 transitions. [2021-08-29 12:55:17,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.8125) internal successors, (61), 16 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:55:17,784 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 291 transitions. [2021-08-29 12:55:17,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-08-29 12:55:17,785 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:55:17,785 INFO L513 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, 1, 1, 1, 1] [2021-08-29 12:55:17,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-08-29 12:55:17,987 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 [2021-08-29 12:55:17,987 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-29 12:55:17,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:55:17,988 INFO L82 PathProgramCache]: Analyzing trace with hash 913672398, now seen corresponding path program 1 times [2021-08-29 12:55:17,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:55:17,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553564012] [2021-08-29 12:55:17,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:55:17,988 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:55:18,015 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:55:18,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2134920427] [2021-08-29 12:55:18,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:55:18,016 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:55:18,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:55:18,023 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) [2021-08-29 12:55:18,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-08-29 12:55:18,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:55:18,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-29 12:55:18,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:55:18,154 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-08-29 12:55:18,154 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 12:55:18,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:55:18,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553564012] [2021-08-29 12:55:18,155 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:55:18,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134920427] [2021-08-29 12:55:18,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134920427] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 12:55:18,155 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 12:55:18,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-29 12:55:18,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444843376] [2021-08-29 12:55:18,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 12:55:18,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:55:18,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 12:55:18,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-29 12:55:18,157 INFO L87 Difference]: Start difference. First operand 250 states and 291 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 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) [2021-08-29 12:55:18,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:55:18,275 INFO L93 Difference]: Finished difference Result 464 states and 552 transitions. [2021-08-29 12:55:18,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 12:55:18,275 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 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 38 [2021-08-29 12:55:18,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:55:18,276 INFO L225 Difference]: With dead ends: 464 [2021-08-29 12:55:18,277 INFO L226 Difference]: Without dead ends: 304 [2021-08-29 12:55:18,277 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 13.60ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-29 12:55:18,278 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 55.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.34ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 75.08ms IncrementalHoareTripleChecker+Time [2021-08-29 12:55:18,278 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 134 Unknown, 0 Unchecked, 0.34ms Time], IncrementalHoareTripleChecker [2 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 75.08ms Time] [2021-08-29 12:55:18,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-08-29 12:55:18,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 283. [2021-08-29 12:55:18,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 279 states have (on average 1.189964157706093) internal successors, (332), 282 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:55:18,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 332 transitions. [2021-08-29 12:55:18,322 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 332 transitions. Word has length 38 [2021-08-29 12:55:18,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:55:18,323 INFO L470 AbstractCegarLoop]: Abstraction has 283 states and 332 transitions. [2021-08-29 12:55:18,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 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) [2021-08-29 12:55:18,323 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 332 transitions. [2021-08-29 12:55:18,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-29 12:55:18,323 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:55:18,324 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:55:18,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-08-29 12:55:18,537 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 [2021-08-29 12:55:18,537 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-29 12:55:18,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:55:18,538 INFO L82 PathProgramCache]: Analyzing trace with hash 2091903451, now seen corresponding path program 1 times [2021-08-29 12:55:18,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:55:18,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077515238] [2021-08-29 12:55:18,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:55:18,538 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:55:18,549 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:55:18,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [691935023] [2021-08-29 12:55:18,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:55:18,550 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:55:18,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:55:18,552 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 12:55:18,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-08-29 12:55:18,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:55:18,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-29 12:55:18,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:55:18,788 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-29 12:55:18,788 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 12:55:18,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:55:18,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077515238] [2021-08-29 12:55:18,789 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:55:18,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691935023] [2021-08-29 12:55:18,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691935023] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 12:55:18,789 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 12:55:18,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-29 12:55:18,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068342887] [2021-08-29 12:55:18,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-29 12:55:18,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:55:18,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-29 12:55:18,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-08-29 12:55:18,791 INFO L87 Difference]: Start difference. First operand 283 states and 332 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 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) [2021-08-29 12:55:19,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:55:19,102 INFO L93 Difference]: Finished difference Result 365 states and 424 transitions. [2021-08-29 12:55:19,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-29 12:55:19,103 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 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 39 [2021-08-29 12:55:19,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:55:19,104 INFO L225 Difference]: With dead ends: 365 [2021-08-29 12:55:19,104 INFO L226 Difference]: Without dead ends: 285 [2021-08-29 12:55:19,105 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 125.09ms TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-08-29 12:55:19,105 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 151 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 140.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.33ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 170.23ms IncrementalHoareTripleChecker+Time [2021-08-29 12:55:19,105 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 0 Invalid, 303 Unknown, 0 Unchecked, 1.33ms Time], IncrementalHoareTripleChecker [5 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 170.23ms Time] [2021-08-29 12:55:19,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2021-08-29 12:55:19,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 210. [2021-08-29 12:55:19,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 206 states have (on average 1.1893203883495145) internal successors, (245), 209 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:55:19,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 245 transitions. [2021-08-29 12:55:19,145 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 245 transitions. Word has length 39 [2021-08-29 12:55:19,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:55:19,145 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 245 transitions. [2021-08-29 12:55:19,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 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) [2021-08-29 12:55:19,146 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 245 transitions. [2021-08-29 12:55:19,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-08-29 12:55:19,153 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:55:19,153 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:55:19,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-08-29 12:55:19,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:55:19,378 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-29 12:55:19,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:55:19,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1496319042, now seen corresponding path program 1 times [2021-08-29 12:55:19,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:55:19,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336018454] [2021-08-29 12:55:19,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:55:19,378 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:55:19,385 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:55:19,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [657463080] [2021-08-29 12:55:19,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:55:19,386 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:55:19,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:55:19,393 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 12:55:19,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-08-29 12:55:19,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:55:19,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-29 12:55:19,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:55:19,734 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:55:19,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 12:55:20,002 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:55:20,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:55:20,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336018454] [2021-08-29 12:55:20,003 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:55:20,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657463080] [2021-08-29 12:55:20,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657463080] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 12:55:20,003 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 12:55:20,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-08-29 12:55:20,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158398964] [2021-08-29 12:55:20,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-29 12:55:20,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:55:20,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-29 12:55:20,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2021-08-29 12:55:20,004 INFO L87 Difference]: Start difference. First operand 210 states and 245 transitions. Second operand has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 17 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:55:20,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:55:20,481 INFO L93 Difference]: Finished difference Result 317 states and 370 transitions. [2021-08-29 12:55:20,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-29 12:55:20,482 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 17 states have internal predecessors, (75), 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 42 [2021-08-29 12:55:20,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:55:20,484 INFO L225 Difference]: With dead ends: 317 [2021-08-29 12:55:20,484 INFO L226 Difference]: Without dead ends: 192 [2021-08-29 12:55:20,485 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 310.35ms TimeCoverageRelationStatistics Valid=218, Invalid=712, Unknown=0, NotChecked=0, Total=930 [2021-08-29 12:55:20,485 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 245 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 217.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.35ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 271.83ms IncrementalHoareTripleChecker+Time [2021-08-29 12:55:20,485 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 0 Invalid, 526 Unknown, 0 Unchecked, 2.35ms Time], IncrementalHoareTripleChecker [36 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 271.83ms Time] [2021-08-29 12:55:20,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-08-29 12:55:20,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 183. [2021-08-29 12:55:20,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 179 states have (on average 1.1843575418994414) internal successors, (212), 182 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:55:20,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 212 transitions. [2021-08-29 12:55:20,523 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 212 transitions. Word has length 42 [2021-08-29 12:55:20,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:55:20,524 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 212 transitions. [2021-08-29 12:55:20,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 17 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:55:20,524 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 212 transitions. [2021-08-29 12:55:20,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-08-29 12:55:20,525 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:55:20,525 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-08-29 12:55:20,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-08-29 12:55:20,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-08-29 12:55:20,742 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-29 12:55:20,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:55:20,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1938007466, now seen corresponding path program 1 times [2021-08-29 12:55:20,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:55:20,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043966114] [2021-08-29 12:55:20,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:55:20,743 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:55:20,748 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:55:20,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [677537780] [2021-08-29 12:55:20,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:55:20,748 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:55:20,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:55:20,765 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 12:55:20,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-08-29 12:55:20,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:55:20,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 17 conjunts are in the unsatisfiable core [2021-08-29 12:55:20,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:55:21,226 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:55:21,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 12:55:21,695 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:55:21,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:55:21,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043966114] [2021-08-29 12:55:21,695 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:55:21,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677537780] [2021-08-29 12:55:21,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677537780] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 12:55:21,696 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 12:55:21,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-08-29 12:55:21,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254774879] [2021-08-29 12:55:21,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-29 12:55:21,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:55:21,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-29 12:55:21,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2021-08-29 12:55:21,699 INFO L87 Difference]: Start difference. First operand 183 states and 212 transitions. Second operand has 18 states, 18 states have (on average 4.388888888888889) internal successors, (79), 18 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:55:22,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:55:22,403 INFO L93 Difference]: Finished difference Result 284 states and 330 transitions. [2021-08-29 12:55:22,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-08-29 12:55:22,404 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.388888888888889) internal successors, (79), 18 states have internal predecessors, (79), 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 45 [2021-08-29 12:55:22,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:55:22,405 INFO L225 Difference]: With dead ends: 284 [2021-08-29 12:55:22,405 INFO L226 Difference]: Without dead ends: 115 [2021-08-29 12:55:22,406 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 567.08ms TimeCoverageRelationStatistics Valid=276, Invalid=846, Unknown=0, NotChecked=0, Total=1122 [2021-08-29 12:55:22,406 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 143 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 244.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.24ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 299.60ms IncrementalHoareTripleChecker+Time [2021-08-29 12:55:22,407 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 0 Invalid, 504 Unknown, 0 Unchecked, 2.24ms Time], IncrementalHoareTripleChecker [28 Valid, 436 Invalid, 0 Unknown, 40 Unchecked, 299.60ms Time] [2021-08-29 12:55:22,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-08-29 12:55:22,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2021-08-29 12:55:22,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 111 states have (on average 1.1891891891891893) internal successors, (132), 114 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:55:22,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 132 transitions. [2021-08-29 12:55:22,431 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 132 transitions. Word has length 45 [2021-08-29 12:55:22,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:55:22,431 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 132 transitions. [2021-08-29 12:55:22,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.388888888888889) internal successors, (79), 18 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:55:22,431 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 132 transitions. [2021-08-29 12:55:22,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-29 12:55:22,432 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:55:22,432 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 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, 1] [2021-08-29 12:55:22,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-08-29 12:55:22,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-08-29 12:55:22,656 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-29 12:55:22,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:55:22,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1976752845, now seen corresponding path program 1 times [2021-08-29 12:55:22,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:55:22,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464864304] [2021-08-29 12:55:22,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:55:22,657 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:55:22,662 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:55:22,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1092719534] [2021-08-29 12:55:22,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:55:22,663 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:55:22,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:55:22,669 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 12:55:22,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-08-29 12:55:22,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:55:22,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 86 conjunts are in the unsatisfiable core [2021-08-29 12:55:22,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:55:26,044 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:55:26,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 12:55:39,577 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-29 12:55:39,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:55:39,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464864304] [2021-08-29 12:55:39,577 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:55:39,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092719534] [2021-08-29 12:55:39,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092719534] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 12:55:39,578 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 12:55:39,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 16] total 35 [2021-08-29 12:55:39,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779954294] [2021-08-29 12:55:39,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-08-29 12:55:39,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:55:39,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-08-29 12:55:39,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=948, Unknown=3, NotChecked=0, Total=1190 [2021-08-29 12:55:39,579 INFO L87 Difference]: Start difference. First operand 115 states and 132 transitions. Second operand has 35 states, 35 states have (on average 2.4571428571428573) internal successors, (86), 35 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:56:35,884 WARN L210 SmtUtils]: Spent 18.14s on a formula simplification that was a NOOP. DAG size: 77 [2021-08-29 12:56:38,335 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:56:40,339 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:56:42,343 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:56:44,540 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:56:46,548 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:56:55,402 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:56:57,406 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:56:59,410 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:57:01,447 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:57:03,459 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:57:05,465 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:57:07,468 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:57:09,472 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:57:11,475 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:57:13,490 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:57:15,496 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:57:17,501 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:57:19,504 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:57:21,507 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:57:23,511 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:57:25,550 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:57:27,609 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:57:31,486 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:57:33,494 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:57:35,497 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:57:37,501 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:57:39,523 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:57:41,525 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:57:43,537 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:57:45,539 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:57:47,543 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:57:49,546 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:57:52,306 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:57:54,308 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:57:56,313 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:57:58,315 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:58:11,349 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:58:13,352 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:58:31,998 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:58:34,483 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:58:46,897 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:58:46,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:58:46,905 INFO L93 Difference]: Finished difference Result 262 states and 297 transitions. [2021-08-29 12:58:46,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-08-29 12:58:46,906 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.4571428571428573) internal successors, (86), 35 states have internal predecessors, (86), 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 46 [2021-08-29 12:58:46,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:58:46,906 INFO L225 Difference]: With dead ends: 262 [2021-08-29 12:58:46,906 INFO L226 Difference]: Without dead ends: 198 [2021-08-29 12:58:46,908 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3019 ImplicationChecksByTransitivity, 109931.62ms TimeCoverageRelationStatistics Valid=1876, Invalid=6835, Unknown=31, NotChecked=0, Total=8742 [2021-08-29 12:58:46,908 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 659 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 294 mSolverCounterUnsat, 41 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 90147.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.48ms SdHoareTripleChecker+Time, 294 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 41 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 90390.99ms IncrementalHoareTripleChecker+Time [2021-08-29 12:58:46,908 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [659 Valid, 0 Invalid, 1395 Unknown, 0 Unchecked, 15.48ms Time], IncrementalHoareTripleChecker [294 Valid, 1060 Invalid, 41 Unknown, 0 Unchecked, 90390.99ms Time] [2021-08-29 12:58:46,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-08-29 12:58:46,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 157. [2021-08-29 12:58:46,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 153 states have (on average 1.1830065359477124) internal successors, (181), 156 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:58:46,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 181 transitions. [2021-08-29 12:58:46,953 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 181 transitions. Word has length 46 [2021-08-29 12:58:46,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:58:46,953 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 181 transitions. [2021-08-29 12:58:46,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.4571428571428573) internal successors, (86), 35 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:58:46,954 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 181 transitions. [2021-08-29 12:58:46,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-08-29 12:58:46,954 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:58:46,954 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:58:46,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-08-29 12:58:47,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-08-29 12:58:47,178 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-29 12:58:47,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:58:47,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1876424686, now seen corresponding path program 1 times [2021-08-29 12:58:47,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:58:47,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267400413] [2021-08-29 12:58:47,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:58:47,179 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:58:47,184 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:58:47,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1746399122] [2021-08-29 12:58:47,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:58:47,184 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:58:47,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:58:47,186 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 12:58:47,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-08-29 12:58:47,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:58:47,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 17 conjunts are in the unsatisfiable core [2021-08-29 12:58:47,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:58:47,492 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 22 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:58:47,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 12:58:47,872 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 18 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:58:47,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:58:47,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267400413] [2021-08-29 12:58:47,872 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:58:47,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746399122] [2021-08-29 12:58:47,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746399122] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 12:58:47,872 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 12:58:47,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 20 [2021-08-29 12:58:47,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908171247] [2021-08-29 12:58:47,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-08-29 12:58:47,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:58:47,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-08-29 12:58:47,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2021-08-29 12:58:47,874 INFO L87 Difference]: Start difference. First operand 157 states and 181 transitions. Second operand has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:58:48,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:58:48,219 INFO L93 Difference]: Finished difference Result 166 states and 191 transitions. [2021-08-29 12:58:48,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-29 12:58:48,220 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 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 56 [2021-08-29 12:58:48,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:58:48,220 INFO L225 Difference]: With dead ends: 166 [2021-08-29 12:58:48,220 INFO L226 Difference]: Without dead ends: 0 [2021-08-29 12:58:48,221 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 300.83ms TimeCoverageRelationStatistics Valid=217, Invalid=653, Unknown=0, NotChecked=0, Total=870 [2021-08-29 12:58:48,221 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 151 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 144.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.41ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 185.27ms IncrementalHoareTripleChecker+Time [2021-08-29 12:58:48,221 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 0 Invalid, 385 Unknown, 0 Unchecked, 1.41ms Time], IncrementalHoareTripleChecker [35 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 185.27ms Time] [2021-08-29 12:58:48,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-29 12:58:48,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-29 12:58:48,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:58:48,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-29 12:58:48,222 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 56 [2021-08-29 12:58:48,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:58:48,222 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-29 12:58:48,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:58:48,222 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-29 12:58:48,223 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-29 12:58:48,225 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2021-08-29 12:58:48,225 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2021-08-29 12:58:48,225 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2021-08-29 12:58:48,225 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2021-08-29 12:58:48,225 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2021-08-29 12:58:48,250 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-08-29 12:58:48,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:58:48,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-29 12:58:48,432 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 12:58:48,433 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 12:58:48,648 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 12:58:48,737 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 12:58:48,875 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 12:58:49,014 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 12:58:49,060 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 12:58:49,180 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 12:58:49,180 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 12:59:02,285 INFO L854 garLoopResultBuilder]: At program point L35-2(lines 35 73) the Hoare annotation is: (let ((.cse8 (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) (.cse9 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0))) (let ((.cse12 (+ .cse8 .cse9))) (let ((.cse6 (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0)) (.cse7 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) (.cse11 (<= ULTIMATE.start_main_~x~0 2)) (.cse3 (<= 1 ULTIMATE.start_main_~b~0)) (.cse4 (<= 1 ULTIMATE.start_main_~x~0)) (.cse13 (= ULTIMATE.start_main_~a~0 .cse12)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse10 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (<= ULTIMATE.start_main_~y~0 2)) (.cse2 (< ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0)) (.cse14 (= ULTIMATE.start_main_~r~0 0)) (.cse15 (= ULTIMATE.start_main_~s~0 1))) (or (and (<= ULTIMATE.start_main_~c~0 2) .cse0 (= ULTIMATE.start_main_~s~0 0) .cse1 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0) .cse2 (= ULTIMATE.start_main_~p~0 0) (<= 1 ULTIMATE.start_main_~c~0) .cse3 (< ULTIMATE.start_main_~b~0 2) (= ULTIMATE.start_main_~r~0 1) (= ULTIMATE.start_main_~q~0 1) .cse4 (or (= (let ((.cse5 (div ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~b~0))) (+ (* 2 (* ULTIMATE.start_main_~q~0 .cse5 ULTIMATE.start_main_~x~0)) .cse6 (* 2 (* ULTIMATE.start_main_~s~0 .cse5 ULTIMATE.start_main_~y~0)) .cse7 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~k~0) (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~k~0))) (+ ULTIMATE.start_main_~b~0 .cse8 .cse9)) (not (= ULTIMATE.start_main_~c~0 (* 2 ULTIMATE.start_main_~b~0))))) (and (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) .cse0 .cse10 (<= ULTIMATE.start_main_~a~0 2) .cse1 .cse11 (= .cse12 (+ ULTIMATE.start_main_~a~0 .cse6 .cse7)) (<= 1 ULTIMATE.start_main_~y~0) (< (div ULTIMATE.start_main_~b~0 (- 2)) 1) (< ULTIMATE.start_main_~b~0 (div (+ 2 (* ULTIMATE.start_main_~b~0 (- 1))) 2)) (< ULTIMATE.start_main_~c~0 (div (+ (* ULTIMATE.start_main_~c~0 (- 1)) 2) 2)) (< (div ULTIMATE.start_main_~c~0 (- 2)) 1) .cse4 .cse13) (and .cse0 .cse11 (<= ULTIMATE.start_main_~b~0 2) (<= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) .cse3 (= ULTIMATE.start_main_~q~0 0) .cse14 .cse15 .cse4 .cse13 (<= ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and .cse0 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) .cse10 (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~c~0) .cse1 .cse2 (< ULTIMATE.start_main_~y~0 (* 3 ULTIMATE.start_main_~a~0)) (= ULTIMATE.start_main_~a~0 .cse9) (= (+ ULTIMATE.start_main_~q~0 (* ULTIMATE.start_main_~p~0 (div (* ULTIMATE.start_main_~a~0 2) ULTIMATE.start_main_~a~0))) 0) (= ULTIMATE.start_main_~y~0 (+ ULTIMATE.start_main_~b~0 (* 2 ULTIMATE.start_main_~a~0))) .cse14 .cse15))))) [2021-08-29 12:59:02,285 INFO L858 garLoopResultBuilder]: For program point L35-3(lines 35 73) no Hoare annotation was computed. [2021-08-29 12:59:02,285 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-29 12:59:02,285 INFO L858 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2021-08-29 12:59:02,285 INFO L854 garLoopResultBuilder]: At program point L11-2(lines 10 16) the Hoare annotation is: (let ((.cse22 (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) (.cse23 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0))) (let ((.cse2 (= ULTIMATE.start_main_~s~0 0)) (.cse3 (<= ULTIMATE.start_main_~y~0 2)) (.cse4 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) (.cse5 (= ULTIMATE.start_main_~p~0 0)) (.cse8 (= ULTIMATE.start_main_~r~0 1)) (.cse9 (= ULTIMATE.start_main_~q~0 1)) (.cse10 (<= 1 ULTIMATE.start_main_~x~0)) (.cse11 (< ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~a~0)) (.cse1 (= ULTIMATE.start_main_~k~0 0)) (.cse6 (= (* ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~v~0)) (.cse13 (= ULTIMATE.start_main_~d~0 1)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse12 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse14 (<= ULTIMATE.start_main_~x~0 2)) (.cse15 (<= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (.cse16 (<= 1 ULTIMATE.start_main_~y~0)) (.cse17 (= ULTIMATE.start_main_~q~0 0)) (.cse7 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0)) (.cse18 (= ULTIMATE.start_main_~r~0 0)) (.cse19 (= ULTIMATE.start_main_~s~0 1)) (.cse20 (= ULTIMATE.start_main_~a~0 (+ .cse22 .cse23))) (.cse21 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))) (or (and (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0) .cse0 .cse1 (= ULTIMATE.start_main_~v~0 (* 2 ULTIMATE.start_main_~b~0)) .cse2 .cse3 .cse4 .cse5 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse6 .cse7 .cse8 .cse9 .cse10 .cse11) (and (= (+ ULTIMATE.start_main_~c~0 (* ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~k~0)) ULTIMATE.start_main_~a~0) .cse0 .cse2 .cse12 .cse3 .cse4 .cse5 .cse6 (<= 1 ULTIMATE.start_main_~b~0) .cse7 .cse13 .cse8 .cse9 .cse10 (< ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~c~0) .cse11) (and .cse0 .cse1 .cse12 .cse14 .cse15 .cse6 .cse16 .cse17 .cse7 .cse18 .cse13 (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~a~0) .cse19 .cse20 .cse21) (let ((.cse24 (div ULTIMATE.start_main_~v~0 2))) (and (= (+ (* ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~k~0) (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~k~0) (* ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) (+ ULTIMATE.start_main_~b~0 .cse22 .cse23)) .cse0 .cse12 (= ULTIMATE.start_main_~d~0 2) .cse14 (<= (div (* ULTIMATE.start_main_~v~0 (- 1)) (- 2)) ULTIMATE.start_main_~b~0) .cse15 .cse16 .cse17 (<= ULTIMATE.start_main_~b~0 .cse24) .cse7 .cse18 .cse19 .cse20 (<= (* 2 .cse24) ULTIMATE.start_main_~c~0) .cse21))))) [2021-08-29 12:59:02,285 INFO L858 garLoopResultBuilder]: For program point L11-3(lines 11 14) no Hoare annotation was computed. [2021-08-29 12:59:02,285 INFO L854 garLoopResultBuilder]: At program point L11-5(lines 10 16) the Hoare annotation is: (let ((.cse23 (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) (.cse24 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0))) (let ((.cse2 (= ULTIMATE.start_main_~s~0 0)) (.cse3 (<= ULTIMATE.start_main_~y~0 2)) (.cse4 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) (.cse5 (= ULTIMATE.start_main_~p~0 0)) (.cse8 (= ULTIMATE.start_main_~r~0 1)) (.cse9 (= ULTIMATE.start_main_~q~0 1)) (.cse10 (<= 1 ULTIMATE.start_main_~x~0)) (.cse11 (< ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~a~0)) (.cse1 (= ULTIMATE.start_main_~k~0 0)) (.cse6 (= (* ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~v~0)) (.cse13 (= ULTIMATE.start_main_~d~0 1)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse12 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse14 (= ULTIMATE.start_main_~p~0 1)) (.cse15 (<= ULTIMATE.start_main_~x~0 2)) (.cse16 (<= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (.cse17 (<= 1 ULTIMATE.start_main_~y~0)) (.cse18 (= ULTIMATE.start_main_~q~0 0)) (.cse7 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0)) (.cse19 (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~a~0)) (.cse20 (= ULTIMATE.start_main_~s~0 1)) (.cse21 (= ULTIMATE.start_main_~a~0 (+ .cse23 .cse24))) (.cse22 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))) (or (and (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0) .cse0 .cse1 (= ULTIMATE.start_main_~v~0 (* 2 ULTIMATE.start_main_~b~0)) .cse2 .cse3 .cse4 .cse5 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse6 .cse7 .cse8 .cse9 .cse10 .cse11) (and (= (+ ULTIMATE.start_main_~c~0 (* ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~k~0)) ULTIMATE.start_main_~a~0) .cse0 .cse2 .cse12 .cse3 .cse4 .cse5 .cse6 (<= 1 ULTIMATE.start_main_~b~0) .cse7 .cse13 .cse8 .cse9 .cse10 (< ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~c~0) .cse11) (and .cse0 .cse1 .cse12 .cse14 .cse15 .cse16 .cse6 .cse17 .cse18 .cse7 .cse13 .cse19 .cse20 .cse21 (<= ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~a~0) .cse22) (let ((.cse25 (div ULTIMATE.start_main_~v~0 2))) (and (= (+ (* ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~k~0) (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~k~0) (* ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) (+ ULTIMATE.start_main_~b~0 .cse23 .cse24)) .cse0 .cse12 (= ULTIMATE.start_main_~d~0 2) .cse14 .cse15 (<= (div (* ULTIMATE.start_main_~v~0 (- 1)) (- 2)) ULTIMATE.start_main_~b~0) .cse16 .cse17 .cse18 (<= ULTIMATE.start_main_~b~0 .cse25) .cse7 .cse19 .cse20 .cse21 (<= (* 2 .cse25) ULTIMATE.start_main_~c~0) .cse22))))) [2021-08-29 12:59:02,286 INFO L858 garLoopResultBuilder]: For program point L11-6(lines 11 14) no Hoare annotation was computed. [2021-08-29 12:59:02,286 INFO L858 garLoopResultBuilder]: For program point L36(lines 36 37) no Hoare annotation was computed. [2021-08-29 12:59:02,286 INFO L854 garLoopResultBuilder]: At program point L11-8(lines 10 16) the Hoare annotation is: (let ((.cse14 (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) (.cse15 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0))) (let ((.cse2 (= ULTIMATE.start_main_~s~0 0)) (.cse3 (<= ULTIMATE.start_main_~y~0 2)) (.cse4 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) (.cse5 (= ULTIMATE.start_main_~p~0 0)) (.cse8 (= ULTIMATE.start_main_~r~0 1)) (.cse9 (= ULTIMATE.start_main_~q~0 1)) (.cse10 (<= 1 ULTIMATE.start_main_~x~0)) (.cse11 (< ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~a~0)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse16 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (.cse1 (= ULTIMATE.start_main_~k~0 0)) (.cse12 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse17 (= ULTIMATE.start_main_~p~0 1)) (.cse18 (<= ULTIMATE.start_main_~x~0 2)) (.cse6 (= (* ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~v~0)) (.cse19 (<= 1 ULTIMATE.start_main_~y~0)) (.cse20 (= ULTIMATE.start_main_~q~0 0)) (.cse7 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0)) (.cse13 (= ULTIMATE.start_main_~d~0 1)) (.cse22 (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~a~0)) (.cse23 (= ULTIMATE.start_main_~s~0 1)) (.cse24 (= ULTIMATE.start_main_~a~0 (+ .cse14 .cse15))) (.cse25 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))) (or (and (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0) .cse0 .cse1 (= ULTIMATE.start_main_~v~0 (* 2 ULTIMATE.start_main_~b~0)) .cse2 .cse3 .cse4 .cse5 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse6 .cse7 .cse8 .cse9 .cse10 .cse11) (and (= (+ ULTIMATE.start_main_~c~0 (* ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~k~0)) ULTIMATE.start_main_~a~0) .cse0 .cse2 .cse12 .cse3 .cse4 .cse5 .cse6 (<= 1 ULTIMATE.start_main_~b~0) .cse7 .cse13 .cse8 .cse9 .cse10 (< ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~c~0) .cse11) (let ((.cse21 (div ULTIMATE.start_main_~v~0 2))) (and (= (+ (* ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~k~0) (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~k~0) (* ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) (+ ULTIMATE.start_main_~b~0 .cse14 .cse15)) .cse0 .cse16 .cse12 (= ULTIMATE.start_main_~d~0 2) .cse17 .cse18 (<= (div (* ULTIMATE.start_main_~v~0 (- 1)) (- 2)) ULTIMATE.start_main_~b~0) .cse19 .cse20 (<= ULTIMATE.start_main_~b~0 .cse21) .cse7 .cse22 .cse23 .cse24 (<= (* 2 .cse21) ULTIMATE.start_main_~c~0) .cse25)) (and .cse0 .cse16 .cse1 .cse12 .cse17 .cse18 .cse6 .cse19 .cse20 .cse7 .cse13 .cse22 .cse23 .cse24 .cse25)))) [2021-08-29 12:59:02,286 INFO L858 garLoopResultBuilder]: For program point L11-9(lines 11 14) no Hoare annotation was computed. [2021-08-29 12:59:02,286 INFO L854 garLoopResultBuilder]: At program point L11-11(lines 55 56) the Hoare annotation is: (let ((.cse0 (= (+ ULTIMATE.start_main_~c~0 (* ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~k~0)) ULTIMATE.start_main_~a~0)) (.cse2 (= ULTIMATE.start_main_~s~0 0)) (.cse15 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) (.cse4 (= ULTIMATE.start_main_~p~0 0)) (.cse7 (<= 1 ULTIMATE.start_main_~b~0)) (.cse9 (= ULTIMATE.start_main_~r~0 1)) (.cse10 (= ULTIMATE.start_main_~q~0 1)) (.cse11 (<= 1 ULTIMATE.start_main_~x~0)) (.cse12 (< ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~a~0)) (.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse13 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (.cse14 (= ULTIMATE.start_main_~k~0 0)) (.cse16 (= ULTIMATE.start_main_~p~0 1)) (.cse17 (<= ULTIMATE.start_main_~x~0 2)) (.cse18 (<= 0 ULTIMATE.start_main_~y~0)) (.cse5 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse6 (= (* ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~v~0)) (.cse19 (= ULTIMATE.start_main_~q~0 0)) (.cse8 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0)) (.cse21 (not (= ULTIMATE.start_main_~b~0 0))) (.cse22 (= ULTIMATE.start_main_~r~0 0)) (.cse23 (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~a~0)) (.cse24 (= ULTIMATE.start_main_~s~0 1)) (.cse25 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~v~0 (* 2 ULTIMATE.start_main_~b~0)) (not (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~b~0)) .cse2 (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~c~0) (<= ULTIMATE.start_main_~y~0 2) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12) (let ((.cse20 (div ULTIMATE.start_main_~v~0 2))) (and (= (+ (* ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~k~0) (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~k~0) (* ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) (+ ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0))) .cse1 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 (<= (div (* ULTIMATE.start_main_~v~0 (- 1)) (- 2)) ULTIMATE.start_main_~b~0) .cse19 (<= ULTIMATE.start_main_~b~0 .cse20) .cse8 .cse21 .cse22 .cse23 .cse24 (<= (* 2 .cse20) ULTIMATE.start_main_~c~0) .cse25)) (and .cse0 .cse1 .cse2 .cse15 (<= ULTIMATE.start_main_~a~0 2) .cse3 .cse4 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~v~0) .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 (< ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~c~0) .cse12) (and .cse1 .cse13 .cse14 .cse16 .cse17 .cse18 .cse5 .cse6 .cse19 .cse8 .cse21 .cse22 (= ULTIMATE.start_main_~d~0 1) .cse23 .cse24 .cse25))) [2021-08-29 12:59:02,286 INFO L858 garLoopResultBuilder]: For program point L11-12(lines 11 14) no Hoare annotation was computed. [2021-08-29 12:59:02,286 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-29 12:59:02,286 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-29 12:59:02,286 INFO L861 garLoopResultBuilder]: At program point L11-14(lines 10 16) the Hoare annotation is: true [2021-08-29 12:59:02,286 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-29 12:59:02,286 INFO L858 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2021-08-29 12:59:02,287 INFO L858 garLoopResultBuilder]: For program point L12-1(lines 12 13) no Hoare annotation was computed. [2021-08-29 12:59:02,287 INFO L858 garLoopResultBuilder]: For program point L12-2(lines 12 13) no Hoare annotation was computed. [2021-08-29 12:59:02,287 INFO L858 garLoopResultBuilder]: For program point L12-3(lines 12 13) no Hoare annotation was computed. [2021-08-29 12:59:02,287 INFO L858 garLoopResultBuilder]: For program point L12-4(lines 12 13) no Hoare annotation was computed. [2021-08-29 12:59:02,287 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-29 12:59:02,287 INFO L858 garLoopResultBuilder]: For program point L7(lines 7 9) no Hoare annotation was computed. [2021-08-29 12:59:02,287 INFO L858 garLoopResultBuilder]: For program point L7-1(lines 7 9) no Hoare annotation was computed. [2021-08-29 12:59:02,287 INFO L858 garLoopResultBuilder]: For program point L7-2(lines 7 9) no Hoare annotation was computed. [2021-08-29 12:59:02,287 INFO L858 garLoopResultBuilder]: For program point L7-3(lines 7 9) no Hoare annotation was computed. [2021-08-29 12:59:02,287 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-29 12:59:02,287 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-29 12:59:02,287 INFO L854 garLoopResultBuilder]: At program point L49-2(lines 49 59) the Hoare annotation is: (let ((.cse22 (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) (.cse23 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0))) (let ((.cse9 (= ULTIMATE.start_main_~d~0 1)) (.cse1 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (.cse3 (= ULTIMATE.start_main_~p~0 1)) (.cse4 (<= ULTIMATE.start_main_~x~0 2)) (.cse6 (<= 1 ULTIMATE.start_main_~y~0)) (.cse7 (= ULTIMATE.start_main_~q~0 0)) (.cse10 (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~a~0)) (.cse11 (= ULTIMATE.start_main_~s~0 1)) (.cse12 (= ULTIMATE.start_main_~a~0 (+ .cse22 .cse23))) (.cse13 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse2 (= ULTIMATE.start_main_~k~0 0)) (.cse14 (= ULTIMATE.start_main_~s~0 0)) (.cse24 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse15 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) (.cse16 (= ULTIMATE.start_main_~p~0 0)) (.cse5 (= (* ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~v~0)) (.cse17 (<= 1 ULTIMATE.start_main_~b~0)) (.cse8 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0)) (.cse18 (= ULTIMATE.start_main_~r~0 1)) (.cse19 (= ULTIMATE.start_main_~q~0 1)) (.cse20 (<= 1 ULTIMATE.start_main_~x~0)) (.cse21 (< ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~a~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13) (and (= (+ ULTIMATE.start_main_~c~0 (* ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~k~0)) ULTIMATE.start_main_~a~0) .cse0 .cse14 (<= ULTIMATE.start_main_~y~0 2) .cse15 .cse16 .cse5 .cse17 .cse8 .cse9 .cse18 .cse19 .cse20 (< ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~c~0) .cse21) (let ((.cse25 (div ULTIMATE.start_main_~v~0 2))) (and (= (+ (* ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~k~0) (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~k~0) (* ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) (+ ULTIMATE.start_main_~b~0 .cse22 .cse23)) .cse0 .cse1 .cse24 (= ULTIMATE.start_main_~d~0 2) .cse3 .cse4 (<= (div (* ULTIMATE.start_main_~v~0 (- 1)) (- 2)) ULTIMATE.start_main_~b~0) .cse6 .cse7 (<= ULTIMATE.start_main_~b~0 .cse25) .cse8 .cse10 .cse11 .cse12 (<= (* 2 .cse25) ULTIMATE.start_main_~c~0) .cse13)) (and .cse0 .cse2 (= ULTIMATE.start_main_~v~0 (* 2 ULTIMATE.start_main_~b~0)) (not (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~b~0)) .cse14 .cse24 (<= ULTIMATE.start_main_~a~0 2) (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~c~0) .cse15 .cse16 .cse5 .cse17 .cse8 .cse18 .cse19 .cse20 .cse21)))) [2021-08-29 12:59:02,287 INFO L858 garLoopResultBuilder]: For program point L49-3(lines 49 59) no Hoare annotation was computed. [2021-08-29 12:59:02,287 INFO L858 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2021-08-29 12:59:02,288 INFO L858 garLoopResultBuilder]: For program point L8-2(line 8) no Hoare annotation was computed. [2021-08-29 12:59:02,288 INFO L858 garLoopResultBuilder]: For program point L8-4(line 8) no Hoare annotation was computed. [2021-08-29 12:59:02,288 INFO L858 garLoopResultBuilder]: For program point L8-6(line 8) no Hoare annotation was computed. [2021-08-29 12:59:02,288 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-29 12:59:02,288 INFO L861 garLoopResultBuilder]: At program point L75(lines 18 76) the Hoare annotation is: true [2021-08-29 12:59:02,288 INFO L854 garLoopResultBuilder]: At program point L42-2(lines 42 62) the Hoare annotation is: (let ((.cse24 (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) (.cse25 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse4 (* 2 ULTIMATE.start_main_~b~0))) (let ((.cse8 (= (* ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~v~0)) (.cse1 (= ULTIMATE.start_main_~v~0 .cse4)) (.cse3 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse15 (<= 0 ULTIMATE.start_main_~y~0)) (.cse16 (= ULTIMATE.start_main_~q~0 0)) (.cse17 (let ((.cse26 (= ULTIMATE.start_main_~p~0 1)) (.cse27 (<= ULTIMATE.start_main_~x~0 2))) (or (and .cse0 .cse26 .cse27 (<= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0)) (and .cse0 .cse26 .cse27 (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~a~0))))) (.cse19 (= ULTIMATE.start_main_~r~0 0)) (.cse20 (= ULTIMATE.start_main_~s~0 1)) (.cse21 (= ULTIMATE.start_main_~a~0 (+ .cse24 .cse25))) (.cse22 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse14 (+ ULTIMATE.start_main_~c~0 (* ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~k~0))) (.cse2 (= ULTIMATE.start_main_~s~0 0)) (.cse5 (<= ULTIMATE.start_main_~y~0 2)) (.cse6 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) (.cse7 (= ULTIMATE.start_main_~p~0 0)) (.cse9 (<= 1 ULTIMATE.start_main_~b~0)) (.cse18 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0)) (.cse10 (< ULTIMATE.start_main_~b~0 2)) (.cse11 (= ULTIMATE.start_main_~r~0 1)) (.cse12 (= ULTIMATE.start_main_~q~0 1)) (.cse13 (<= 1 ULTIMATE.start_main_~x~0))) (or (and .cse0 .cse1 .cse2 .cse3 (= ULTIMATE.start_main_~y~0 (+ ULTIMATE.start_main_~c~0 .cse4)) .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 (< ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~a~0) (= .cse14 ULTIMATE.start_main_~y~0)) (and (= ULTIMATE.start_main_~k~0 0) .cse15 (<= ULTIMATE.start_main_~b~0 2) .cse16 .cse17 .cse18 (not (= ULTIMATE.start_main_~b~0 0)) .cse19 .cse20 .cse13 .cse21 .cse22) (and (let ((.cse23 (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~k~0) (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~k~0)) (+ ULTIMATE.start_main_~b~0 .cse24 .cse25)))) (or (and .cse15 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse8 .cse16 .cse17 .cse19 (= ULTIMATE.start_main_~d~0 1) .cse23 .cse20 .cse13 .cse21 .cse22) (and .cse1 .cse3 (<= .cse4 2) (= ULTIMATE.start_main_~d~0 2) .cse15 .cse16 .cse17 .cse19 .cse23 .cse20 .cse13 .cse21 .cse22))) (< (* 2 ULTIMATE.start_main_~c~0) 2) (< (div ULTIMATE.start_main_~c~0 (- 2)) 1)) (and (= .cse14 ULTIMATE.start_main_~a~0) .cse0 .cse2 .cse5 .cse6 (< ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) .cse7 .cse9 .cse18 .cse10 .cse11 .cse12 .cse13)))) [2021-08-29 12:59:02,288 INFO L858 garLoopResultBuilder]: For program point L42-3(lines 42 62) no Hoare annotation was computed. [2021-08-29 12:59:02,288 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-29 12:59:02,288 INFO L858 garLoopResultBuilder]: For program point L43(lines 43 44) no Hoare annotation was computed. [2021-08-29 12:59:02,292 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 12:59:02,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 12:59:02 BoogieIcfgContainer [2021-08-29 12:59:02,328 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 12:59:02,328 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 12:59:02,328 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 12:59:02,329 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 12:59:02,329 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 12:54:53" (3/4) ... [2021-08-29 12:59:02,331 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-29 12:59:02,340 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-08-29 12:59:02,340 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-29 12:59:02,341 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 12:59:02,341 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 12:59:02,381 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 12:59:02,382 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 12:59:02,382 INFO L158 Benchmark]: Toolchain (without parser) took 249519.29ms. Allocated memory was 50.3MB in the beginning and 107.0MB in the end (delta: 56.6MB). Free memory was 27.7MB in the beginning and 52.9MB in the end (delta: -25.1MB). Peak memory consumption was 29.5MB. Max. memory is 16.1GB. [2021-08-29 12:59:02,382 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 50.3MB. Free memory was 32.7MB in the beginning and 32.7MB in the end (delta: 38.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 12:59:02,383 INFO L158 Benchmark]: CACSL2BoogieTranslator took 195.88ms. Allocated memory is still 50.3MB. Free memory was 27.6MB in the beginning and 29.1MB in the end (delta: -1.5MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. [2021-08-29 12:59:02,383 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.89ms. Allocated memory was 50.3MB in the beginning and 60.8MB in the end (delta: 10.5MB). Free memory was 28.9MB in the beginning and 44.4MB in the end (delta: -15.5MB). Peak memory consumption was 2.5MB. Max. memory is 16.1GB. [2021-08-29 12:59:02,383 INFO L158 Benchmark]: Boogie Preprocessor took 56.07ms. Allocated memory is still 60.8MB. Free memory was 44.4MB in the beginning and 43.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 12:59:02,384 INFO L158 Benchmark]: RCFGBuilder took 269.55ms. Allocated memory is still 60.8MB. Free memory was 43.2MB in the beginning and 33.5MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-29 12:59:02,384 INFO L158 Benchmark]: TraceAbstraction took 248883.35ms. Allocated memory was 60.8MB in the beginning and 107.0MB in the end (delta: 46.1MB). Free memory was 33.1MB in the beginning and 58.1MB in the end (delta: -25.0MB). Peak memory consumption was 56.3MB. Max. memory is 16.1GB. [2021-08-29 12:59:02,384 INFO L158 Benchmark]: Witness Printer took 53.37ms. Allocated memory is still 107.0MB. Free memory was 58.1MB in the beginning and 52.9MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-29 12:59:02,385 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 50.3MB. Free memory was 32.7MB in the beginning and 32.7MB in the end (delta: 38.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 195.88ms. Allocated memory is still 50.3MB. Free memory was 27.6MB in the beginning and 29.1MB in the end (delta: -1.5MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.89ms. Allocated memory was 50.3MB in the beginning and 60.8MB in the end (delta: 10.5MB). Free memory was 28.9MB in the beginning and 44.4MB in the end (delta: -15.5MB). Peak memory consumption was 2.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.07ms. Allocated memory is still 60.8MB. Free memory was 44.4MB in the beginning and 43.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 269.55ms. Allocated memory is still 60.8MB. Free memory was 43.2MB in the beginning and 33.5MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 248883.35ms. Allocated memory was 60.8MB in the beginning and 107.0MB in the end (delta: 46.1MB). Free memory was 33.1MB in the beginning and 58.1MB in the end (delta: -25.0MB). Peak memory consumption was 56.3MB. Max. memory is 16.1GB. * Witness Printer took 53.37ms. Allocated memory is still 107.0MB. Free memory was 58.1MB in the beginning and 52.9MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: 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, 41 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 248783.79ms, OverallIterations: 19, TraceHistogramMax: 4, EmptinessCheckTime: 57.89ms, AutomataDifference: 205120.49ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 13858.02ms, InitialAbstractionConstructionTime: 41.85ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 41 mSolverCounterUnknown, 3638 SdHoareTripleChecker+Valid, 99558.52ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3638 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 98533.82ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 40 IncrementalHoareTripleChecker+Unchecked, 2544 mSDsCounter, 786 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6717 IncrementalHoareTripleChecker+Invalid, 7584 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 786 mSolverCounterUnsat, 0 mSDtfsCounter, 6717 mSolverCounterSat, 56.62ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1107 GetRequests, 683 SyntacticMatches, 9 SemanticMatches, 415 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4765 ImplicationChecksByTransitivity, 119324.69ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=340occurred in iteration=10, InterpolantAutomatonStates: 311, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 499.38ms AutomataMinimizationTime, 19 MinimizatonAttempts, 759 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: 0.00ms HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 46 NumberOfFragments, 1928 HoareAnnotationTreeSize, 9 FomulaSimplifications, 23029 FormulaSimplificationTreeSizeReduction, 899.14ms HoareSimplificationTime, 9 FomulaSimplificationsInter, 16774 FormulaSimplificationTreeSizeReductionInter, 12948.44ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 132.19ms SsaConstructionTime, 342.29ms SatisfiabilityAnalysisTime, 23809.06ms InterpolantComputationTime, 558 NumberOfCodeBlocks, 558 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 874 ConstructedInterpolants, 2 QuantifiedInterpolants, 9922 SizeOfPredicates, 174 NumberOfNonLiveVariables, 2354 ConjunctsInSsa, 409 ConjunctsInUnsatCore, 29 InterpolantComputations, 10 PerfectInterpolantSequences, 160/346 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 5 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((((((((((((((((b == x && cond == 1) && k == 0) && v == 2 * b) && s == 0) && y <= 2) && a == y) && p == 0) && 1 == cond) && d * b == v) && c == a) && r == 1) && q == 1) && 1 <= x) && x < a) || (((((((((((((((c + b * k == a && cond == 1) && s == 0) && 1 <= cond) && y <= 2) && a == y) && p == 0) && d * b == v) && 1 <= b) && c == a) && d == 1) && r == 1) && q == 1) && 1 <= x) && v < c) && x < a)) || (((((((((((((((cond == 1 && k == 0) && 1 <= cond) && p == 1) && x <= 2) && a <= x) && d * b == v) && 1 <= y) && q == 0) && c == a) && d == 1) && y <= a) && s == 1) && a == r * y + p * x) && x <= a) && b == y)) || ((((((((((((((((d * s * y + s * y + q * x + q * x * k + s * y * k + d * q * x == b + r * y + p * x && cond == 1) && 1 <= cond) && d == 2) && p == 1) && x <= 2) && v * -1 / -2 <= b) && a <= x) && 1 <= y) && q == 0) && b <= v / 2) && c == a) && y <= a) && s == 1) && a == r * y + p * x) && 2 * (v / 2) <= c) && b == y) - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: (((((((((((((((((cond == 1 && v == 2 * b) && s == 0) && 1 <= cond) && y == c + 2 * b) && y <= 2) && a == y) && p == 0) && d * b == v) && 1 <= b) && b < 2) && r == 1) && q == 1) && 1 <= x) && x < a) && c + b * k == y) || (((((((((((k == 0 && 0 <= y) && b <= 2) && q == 0) && ((((cond == 1 && p == 1) && x <= 2) && c <= a) || (((cond == 1 && p == 1) && x <= 2) && y <= a))) && c == a) && !(b == 0)) && r == 0) && s == 1) && 1 <= x) && a == r * y + p * x) && b == y)) || ((((((((((((((0 <= y && 1 == cond) && d * b == v) && q == 0) && ((((cond == 1 && p == 1) && x <= 2) && c <= a) || (((cond == 1 && p == 1) && x <= 2) && y <= a))) && r == 0) && d == 1) && s * y + q * x + q * x * k + s * y * k == b + r * y + p * x) && s == 1) && 1 <= x) && a == r * y + p * x) && b == y) || ((((((((((((v == 2 * b && 1 <= cond) && 2 * b <= 2) && d == 2) && 0 <= y) && q == 0) && ((((cond == 1 && p == 1) && x <= 2) && c <= a) || (((cond == 1 && p == 1) && x <= 2) && y <= a))) && r == 0) && s * y + q * x + q * x * k + s * y * k == b + r * y + p * x) && s == 1) && 1 <= x) && a == r * y + p * x) && b == y)) && 2 * c < 2) && c / -2 < 1)) || ((((((((((((c + b * k == a && cond == 1) && s == 0) && y <= 2) && a == y) && x < y) && p == 0) && 1 <= b) && c == a) && b < 2) && r == 1) && q == 1) && 1 <= x) - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: (((((((((((((((cond == 1 && a == x) && k == 0) && p == 1) && x <= 2) && d * b == v) && 1 <= y) && q == 0) && c == a) && d == 1) && y <= a) && s == 1) && a == r * y + p * x) && b == y) || ((((((((((((((c + b * k == a && cond == 1) && s == 0) && y <= 2) && a == y) && p == 0) && d * b == v) && 1 <= b) && c == a) && d == 1) && r == 1) && q == 1) && 1 <= x) && v < c) && x < a)) || ((((((((((((((((d * s * y + s * y + q * x + q * x * k + s * y * k + d * q * x == b + r * y + p * x && cond == 1) && a == x) && 1 <= cond) && d == 2) && p == 1) && x <= 2) && v * -1 / -2 <= b) && 1 <= y) && q == 0) && b <= v / 2) && c == a) && y <= a) && s == 1) && a == r * y + p * x) && 2 * (v / 2) <= c) && b == y)) || ((((((((((((((((cond == 1 && k == 0) && v == 2 * b) && !(c == b)) && s == 0) && 1 <= cond) && a <= 2) && b <= c) && a == y) && p == 0) && d * b == v) && 1 <= b) && c == a) && r == 1) && q == 1) && 1 <= x) && x < a) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((((((((((((((((b == x && cond == 1) && k == 0) && v == 2 * b) && s == 0) && y <= 2) && a == y) && p == 0) && 1 == cond) && d * b == v) && c == a) && r == 1) && q == 1) && 1 <= x) && x < a) || (((((((((((((((c + b * k == a && cond == 1) && s == 0) && 1 <= cond) && y <= 2) && a == y) && p == 0) && d * b == v) && 1 <= b) && c == a) && d == 1) && r == 1) && q == 1) && 1 <= x) && v < c) && x < a)) || ((((((((((((((((d * s * y + s * y + q * x + q * x * k + s * y * k + d * q * x == b + r * y + p * x && cond == 1) && a == x) && 1 <= cond) && d == 2) && p == 1) && x <= 2) && v * -1 / -2 <= b) && 1 <= y) && q == 0) && b <= v / 2) && c == a) && y <= a) && s == 1) && a == r * y + p * x) && 2 * (v / 2) <= c) && b == y)) || ((((((((((((((cond == 1 && a == x) && k == 0) && 1 <= cond) && p == 1) && x <= 2) && d * b == v) && 1 <= y) && q == 0) && c == a) && d == 1) && y <= a) && s == 1) && a == r * y + p * x) && b == y) - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((((((((((((((c <= 2 && cond == 1) && s == 0) && y <= 2) && a == y) && x < y) && p == 0) && 1 <= c) && 1 <= b) && b < 2) && r == 1) && q == 1) && 1 <= x) && (2 * (q * (b / b) * x) + s * y + 2 * (s * (b / b) * y) + q * x + q * x * k + s * y * k == b + r * y + p * x || !(c == 2 * b))) || (((((((((((((b < a && cond == 1) && 1 <= cond) && a <= 2) && y <= 2) && x <= 2) && r * y + p * x == a + s * y + q * x) && 1 <= y) && b / -2 < 1) && b < (2 + b * -1) / 2) && c < (c * -1 + 2) / 2) && c / -2 < 1) && 1 <= x) && a == r * y + p * x)) || (((((((((((cond == 1 && x <= 2) && b <= 2) && a <= x) && 1 <= b) && q == 0) && r == 0) && s == 1) && 1 <= x) && a == r * y + p * x) && x <= a) && b == y)) || (((((((((((cond == 1 && a == x) && 1 <= cond) && b <= c) && y <= 2) && x < y) && y < 3 * a) && a == p * x) && q + p * (a * 2 / a) == 0) && y == b + 2 * a) && r == 0) && s == 1) - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: ((((((((((((((((((c + b * k == a && cond == 1) && v == 2 * b) && !(c == b)) && s == 0) && b <= c) && y <= 2) && a == y) && p == 0) && 1 == cond) && d * b == v) && 1 <= b) && c == a) && r == 1) && q == 1) && 1 <= x) && x < a) || (((((((((((((((((d * s * y + s * y + q * x + q * x * k + s * y * k + d * q * x == b + r * y + p * x && cond == 1) && a == x) && k == 0) && 1 <= cond) && p == 1) && x <= 2) && 0 <= y) && v * -1 / -2 <= b) && q == 0) && b <= v / 2) && c == a) && !(b == 0)) && r == 0) && y <= a) && s == 1) && 2 * (v / 2) <= c) && b == y)) || (((((((((((((((c + b * k == a && cond == 1) && s == 0) && 1 <= cond) && a <= 2) && a == y) && p == 0) && b == v) && d * b == v) && 1 <= b) && c == a) && r == 1) && q == 1) && 1 <= x) && v < c) && x < a)) || (((((((((((((((cond == 1 && a == x) && k == 0) && p == 1) && x <= 2) && 0 <= y) && 1 == cond) && d * b == v) && q == 0) && c == a) && !(b == 0)) && r == 0) && d == 1) && y <= a) && s == 1) && b == y) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((((((((((((((((b == x && cond == 1) && k == 0) && v == 2 * b) && s == 0) && y <= 2) && a == y) && p == 0) && 1 == cond) && d * b == v) && c == a) && r == 1) && q == 1) && 1 <= x) && x < a) || (((((((((((((((c + b * k == a && cond == 1) && s == 0) && 1 <= cond) && y <= 2) && a == y) && p == 0) && d * b == v) && 1 <= b) && c == a) && d == 1) && r == 1) && q == 1) && 1 <= x) && v < c) && x < a)) || ((((((((((((((cond == 1 && k == 0) && 1 <= cond) && x <= 2) && a <= x) && d * b == v) && 1 <= y) && q == 0) && c == a) && r == 0) && d == 1) && y <= a) && s == 1) && a == r * y + p * x) && b == y)) || (((((((((((((((d * s * y + s * y + q * x + q * x * k + s * y * k + d * q * x == b + r * y + p * x && cond == 1) && 1 <= cond) && d == 2) && x <= 2) && v * -1 / -2 <= b) && a <= x) && 1 <= y) && q == 0) && b <= v / 2) && c == a) && r == 0) && s == 1) && a == r * y + p * x) && 2 * (v / 2) <= c) && b == y) RESULT: Ultimate proved your program to be correct! [2021-08-29 12:59:02,477 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...