./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/egcd-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench/egcd-ll.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 96a3282447b8b2b0ec81a0cc8869c9b6be11590e ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 04:46:24,119 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 04:46:24,122 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 04:46:24,153 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 04:46:24,153 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 04:46:24,156 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 04:46:24,156 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 04:46:24,160 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 04:46:24,162 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 04:46:24,165 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 04:46:24,166 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 04:46:24,167 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 04:46:24,168 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 04:46:24,169 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 04:46:24,170 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 04:46:24,175 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 04:46:24,175 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 04:46:24,176 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 04:46:24,178 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 04:46:24,183 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 04:46:24,184 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 04:46:24,185 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 04:46:24,186 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 04:46:24,187 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 04:46:24,191 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 04:46:24,192 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 04:46:24,192 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 04:46:24,193 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 04:46:24,193 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 04:46:24,194 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 04:46:24,194 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 04:46:24,194 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 04:46:24,196 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 04:46:24,196 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 04:46:24,197 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 04:46:24,197 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 04:46:24,198 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 04:46:24,198 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 04:46:24,198 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 04:46:24,199 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 04:46:24,200 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 04:46:24,203 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 04:46:24,231 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 04:46:24,231 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 04:46:24,232 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 04:46:24,232 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 04:46:24,234 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 04:46:24,234 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 04:46:24,234 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 04:46:24,234 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 04:46:24,234 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 04:46:24,234 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 04:46:24,235 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 04:46:24,235 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 04:46:24,235 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 04:46:24,235 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 04:46:24,236 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 04:46:24,236 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 04:46:24,236 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 04:46:24,236 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 04:46:24,236 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 04:46:24,236 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 04:46:24,241 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 04:46:24,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 04:46:24,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 04:46:24,242 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 04:46:24,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 04:46:24,242 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 04:46:24,242 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 04:46:24,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 04:46:24,243 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 04:46:24,243 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 04:46:24,243 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 96a3282447b8b2b0ec81a0cc8869c9b6be11590e [2021-08-26 04:46:24,499 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 04:46:24,516 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 04:46:24,518 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 04:46:24,518 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 04:46:24,519 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 04:46:24,519 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/egcd-ll.c [2021-08-26 04:46:24,563 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/937835c4e/60f85c6fc2fd48b18f1996670a62b019/FLAG6aafff063 [2021-08-26 04:46:24,993 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 04:46:24,994 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/egcd-ll.c [2021-08-26 04:46:24,999 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/937835c4e/60f85c6fc2fd48b18f1996670a62b019/FLAG6aafff063 [2021-08-26 04:46:25,010 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/937835c4e/60f85c6fc2fd48b18f1996670a62b019 [2021-08-26 04:46:25,012 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 04:46:25,014 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 04:46:25,016 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 04:46:25,016 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 04:46:25,019 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 04:46:25,020 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 04:46:25" (1/1) ... [2021-08-26 04:46:25,020 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46665166 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:46:25, skipping insertion in model container [2021-08-26 04:46:25,020 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 04:46:25" (1/1) ... [2021-08-26 04:46:25,025 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 04:46:25,035 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 04:46:25,141 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/egcd-ll.c[489,502] [2021-08-26 04:46:25,161 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 04:46:25,168 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 04:46:25,191 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/egcd-ll.c[489,502] [2021-08-26 04:46:25,216 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 04:46:25,225 INFO L208 MainTranslator]: Completed translation [2021-08-26 04:46:25,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:46:25 WrapperNode [2021-08-26 04:46:25,227 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 04:46:25,228 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 04:46:25,228 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 04:46:25,228 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 04:46:25,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:46:25" (1/1) ... [2021-08-26 04:46:25,239 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:46:25" (1/1) ... [2021-08-26 04:46:25,258 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 04:46:25,259 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 04:46:25,259 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 04:46:25,259 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 04:46:25,264 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:46:25" (1/1) ... [2021-08-26 04:46:25,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:46:25" (1/1) ... [2021-08-26 04:46:25,272 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:46:25" (1/1) ... [2021-08-26 04:46:25,273 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:46:25" (1/1) ... [2021-08-26 04:46:25,280 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:46:25" (1/1) ... [2021-08-26 04:46:25,286 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:46:25" (1/1) ... [2021-08-26 04:46:25,287 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:46:25" (1/1) ... [2021-08-26 04:46:25,289 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 04:46:25,290 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 04:46:25,290 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 04:46:25,291 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 04:46:25,291 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:46:25" (1/1) ... [2021-08-26 04:46:25,296 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 04:46:25,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:46:25,315 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-26 04:46:25,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-26 04:46:25,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 04:46:25,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 04:46:25,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 04:46:25,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 04:46:25,578 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 04:46:25,578 INFO L299 CfgBuilder]: Removed 23 assume(true) statements. [2021-08-26 04:46:25,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 04:46:25 BoogieIcfgContainer [2021-08-26 04:46:25,579 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 04:46:25,580 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 04:46:25,581 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 04:46:25,584 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 04:46:25,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 04:46:25" (1/3) ... [2021-08-26 04:46:25,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32089a79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 04:46:25, skipping insertion in model container [2021-08-26 04:46:25,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:46:25" (2/3) ... [2021-08-26 04:46:25,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32089a79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 04:46:25, skipping insertion in model container [2021-08-26 04:46:25,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 04:46:25" (3/3) ... [2021-08-26 04:46:25,586 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll.c [2021-08-26 04:46:25,589 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 04:46:25,589 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-08-26 04:46:25,616 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 04:46:25,620 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-26 04:46:25,621 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-08-26 04:46:25,630 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 32 states have (on average 1.625) internal successors, (52), 39 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:25,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-26 04:46:25,633 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:46:25,633 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:46:25,634 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 04:46:25,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:46:25,637 INFO L82 PathProgramCache]: Analyzing trace with hash -594062832, now seen corresponding path program 1 times [2021-08-26 04:46:25,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:46:25,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029457479] [2021-08-26 04:46:25,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:46:25,643 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:46:25,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 04:46:25,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:46:25,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:46:25,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029457479] [2021-08-26 04:46:25,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029457479] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 04:46:25,746 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 04:46:25,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 04:46:25,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388117806] [2021-08-26 04:46:25,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 04:46:25,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:46:25,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 04:46:25,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 04:46:25,759 INFO L87 Difference]: Start difference. First operand has 40 states, 32 states have (on average 1.625) internal successors, (52), 39 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:25,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:46:25,770 INFO L93 Difference]: Finished difference Result 77 states and 100 transitions. [2021-08-26 04:46:25,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 04:46:25,771 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-08-26 04:46:25,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:46:25,775 INFO L225 Difference]: With dead ends: 77 [2021-08-26 04:46:25,775 INFO L226 Difference]: Without dead ends: 36 [2021-08-26 04:46:25,777 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 04:46:25,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-08-26 04:46:25,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-08-26 04:46:25,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 35 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:25,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2021-08-26 04:46:25,796 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 9 [2021-08-26 04:46:25,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:46:25,796 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2021-08-26 04:46:25,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:25,797 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2021-08-26 04:46:25,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-26 04:46:25,797 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:46:25,797 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:46:25,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 04:46:25,798 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 04:46:25,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:46:25,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1182791572, now seen corresponding path program 1 times [2021-08-26 04:46:25,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:46:25,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431987905] [2021-08-26 04:46:25,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:46:25,799 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:46:25,811 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:46:25,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2015715968] [2021-08-26 04:46:25,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:46:25,811 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:46:25,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:46:25,813 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:46:25,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-26 04:46:25,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 04:46:25,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-26 04:46:25,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:46:26,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:46:26,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:46:26,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431987905] [2021-08-26 04:46:26,008 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:46:26,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015715968] [2021-08-26 04:46:26,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015715968] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 04:46:26,009 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 04:46:26,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 04:46:26,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783798533] [2021-08-26 04:46:26,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 04:46:26,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:46:26,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 04:46:26,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 04:46:26,011 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:26,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:46:26,090 INFO L93 Difference]: Finished difference Result 66 states and 68 transitions. [2021-08-26 04:46:26,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 04:46:26,090 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-08-26 04:46:26,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:46:26,091 INFO L225 Difference]: With dead ends: 66 [2021-08-26 04:46:26,091 INFO L226 Difference]: Without dead ends: 62 [2021-08-26 04:46:26,092 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 04:46:26,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-08-26 04:46:26,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 50. [2021-08-26 04:46:26,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 43 states have (on average 1.3255813953488371) internal successors, (57), 49 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:26,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2021-08-26 04:46:26,097 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 9 [2021-08-26 04:46:26,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:46:26,097 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2021-08-26 04:46:26,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:26,098 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2021-08-26 04:46:26,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-26 04:46:26,098 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:46:26,098 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:46:26,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-26 04:46:26,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:46:26,312 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 04:46:26,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:46:26,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1503476777, now seen corresponding path program 1 times [2021-08-26 04:46:26,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:46:26,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715469595] [2021-08-26 04:46:26,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:46:26,313 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:46:26,323 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:46:26,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [181860032] [2021-08-26 04:46:26,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:46:26,324 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:46:26,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:46:26,325 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:46:26,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-26 04:46:26,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 04:46:26,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-26 04:46:26,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:46:26,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:46:26,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:46:26,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715469595] [2021-08-26 04:46:26,555 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:46:26,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181860032] [2021-08-26 04:46:26,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181860032] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 04:46:26,555 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 04:46:26,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-26 04:46:26,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811634816] [2021-08-26 04:46:26,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 04:46:26,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:46:26,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 04:46:26,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-26 04:46:26,557 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:26,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:46:26,717 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2021-08-26 04:46:26,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 04:46:26,718 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-08-26 04:46:26,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:46:26,719 INFO L225 Difference]: With dead ends: 62 [2021-08-26 04:46:26,719 INFO L226 Difference]: Without dead ends: 60 [2021-08-26 04:46:26,719 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 115.8ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-08-26 04:46:26,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-08-26 04:46:26,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 50. [2021-08-26 04:46:26,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 43 states have (on average 1.302325581395349) internal successors, (56), 49 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:26,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 56 transitions. [2021-08-26 04:46:26,724 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 56 transitions. Word has length 11 [2021-08-26 04:46:26,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:46:26,724 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 56 transitions. [2021-08-26 04:46:26,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:26,724 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions. [2021-08-26 04:46:26,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-26 04:46:26,725 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:46:26,725 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:46:26,742 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-26 04:46:26,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-08-26 04:46:26,943 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 04:46:26,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:46:26,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1732014918, now seen corresponding path program 1 times [2021-08-26 04:46:26,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:46:26,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900082830] [2021-08-26 04:46:26,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:46:26,944 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:46:26,953 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:46:26,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1555102791] [2021-08-26 04:46:26,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:46:26,954 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:46:26,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:46:26,954 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:46:26,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-26 04:46:27,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 04:46:27,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 19 conjunts are in the unsatisfiable core [2021-08-26 04:46:27,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:46:27,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:46:27,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:46:27,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900082830] [2021-08-26 04:46:27,268 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:46:27,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555102791] [2021-08-26 04:46:27,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555102791] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 04:46:27,268 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 04:46:27,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-26 04:46:27,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665091420] [2021-08-26 04:46:27,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 04:46:27,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:46:27,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 04:46:27,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-08-26 04:46:27,269 INFO L87 Difference]: Start difference. First operand 50 states and 56 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:27,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:46:27,396 INFO L93 Difference]: Finished difference Result 96 states and 108 transitions. [2021-08-26 04:46:27,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-26 04:46:27,396 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-08-26 04:46:27,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:46:27,397 INFO L225 Difference]: With dead ends: 96 [2021-08-26 04:46:27,397 INFO L226 Difference]: Without dead ends: 88 [2021-08-26 04:46:27,397 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 78.8ms TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-08-26 04:46:27,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-08-26 04:46:27,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 76. [2021-08-26 04:46:27,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 69 states have (on average 1.318840579710145) internal successors, (91), 75 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) [2021-08-26 04:46:27,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 91 transitions. [2021-08-26 04:46:27,403 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 91 transitions. Word has length 13 [2021-08-26 04:46:27,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:46:27,403 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 91 transitions. [2021-08-26 04:46:27,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:27,404 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 91 transitions. [2021-08-26 04:46:27,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-26 04:46:27,404 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:46:27,404 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:46:27,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-26 04:46:27,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:46:27,628 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 04:46:27,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:46:27,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1285599533, now seen corresponding path program 1 times [2021-08-26 04:46:27,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:46:27,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994911029] [2021-08-26 04:46:27,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:46:27,628 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:46:27,636 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:46:27,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1384184471] [2021-08-26 04:46:27,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:46:27,637 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:46:27,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:46:27,638 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:46:27,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-26 04:46:27,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 04:46:27,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-26 04:46:27,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:46:27,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:46:27,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:46:27,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994911029] [2021-08-26 04:46:27,780 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:46:27,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384184471] [2021-08-26 04:46:27,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384184471] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 04:46:27,782 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 04:46:27,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 04:46:27,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636158347] [2021-08-26 04:46:27,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 04:46:27,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:46:27,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 04:46:27,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 04:46:27,784 INFO L87 Difference]: Start difference. First operand 76 states and 91 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:27,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:46:27,843 INFO L93 Difference]: Finished difference Result 76 states and 91 transitions. [2021-08-26 04:46:27,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 04:46:27,843 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-08-26 04:46:27,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:46:27,845 INFO L225 Difference]: With dead ends: 76 [2021-08-26 04:46:27,845 INFO L226 Difference]: Without dead ends: 74 [2021-08-26 04:46:27,845 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 04:46:27,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-08-26 04:46:27,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-08-26 04:46:27,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 68 states have (on average 1.2647058823529411) internal successors, (86), 73 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) [2021-08-26 04:46:27,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 86 transitions. [2021-08-26 04:46:27,850 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 86 transitions. Word has length 16 [2021-08-26 04:46:27,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:46:27,850 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 86 transitions. [2021-08-26 04:46:27,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:27,850 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 86 transitions. [2021-08-26 04:46:27,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-26 04:46:27,851 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:46:27,851 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:46:27,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-26 04:46:28,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:46:28,085 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 04:46:28,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:46:28,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1200468825, now seen corresponding path program 1 times [2021-08-26 04:46:28,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:46:28,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023262785] [2021-08-26 04:46:28,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:46:28,085 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:46:28,092 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:46:28,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [376453849] [2021-08-26 04:46:28,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:46:28,093 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:46:28,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:46:28,113 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:46:28,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-26 04:46:28,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 04:46:28,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-26 04:46:28,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:46:28,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-26 04:46:28,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:46:28,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023262785] [2021-08-26 04:46:28,307 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:46:28,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376453849] [2021-08-26 04:46:28,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376453849] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:46:28,307 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:46:28,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-08-26 04:46:28,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927700436] [2021-08-26 04:46:28,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 04:46:28,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:46:28,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 04:46:28,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 04:46:28,308 INFO L87 Difference]: Start difference. First operand 74 states and 86 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:28,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:46:28,360 INFO L93 Difference]: Finished difference Result 82 states and 90 transitions. [2021-08-26 04:46:28,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 04:46:28,361 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-08-26 04:46:28,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:46:28,362 INFO L225 Difference]: With dead ends: 82 [2021-08-26 04:46:28,362 INFO L226 Difference]: Without dead ends: 76 [2021-08-26 04:46:28,362 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 04:46:28,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-08-26 04:46:28,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 68. [2021-08-26 04:46:28,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 62 states have (on average 1.2580645161290323) internal successors, (78), 67 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:28,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 78 transitions. [2021-08-26 04:46:28,367 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 78 transitions. Word has length 17 [2021-08-26 04:46:28,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:46:28,368 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 78 transitions. [2021-08-26 04:46:28,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:28,368 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 78 transitions. [2021-08-26 04:46:28,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-26 04:46:28,368 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:46:28,368 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:46:28,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-26 04:46:28,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:46:28,586 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 04:46:28,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:46:28,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1489272560, now seen corresponding path program 1 times [2021-08-26 04:46:28,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:46:28,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933605956] [2021-08-26 04:46:28,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:46:28,586 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:46:28,594 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:46:28,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [711379374] [2021-08-26 04:46:28,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:46:28,595 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:46:28,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:46:28,595 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:46:28,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-08-26 04:46:28,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 04:46:28,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-26 04:46:28,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:46:28,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:46:28,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:46:28,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933605956] [2021-08-26 04:46:28,797 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:46:28,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711379374] [2021-08-26 04:46:28,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711379374] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 04:46:28,797 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 04:46:28,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-26 04:46:28,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148650960] [2021-08-26 04:46:28,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 04:46:28,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:46:28,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 04:46:28,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-26 04:46:28,798 INFO L87 Difference]: Start difference. First operand 68 states and 78 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:28,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:46:28,881 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2021-08-26 04:46:28,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-26 04:46:28,881 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-08-26 04:46:28,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:46:28,881 INFO L225 Difference]: With dead ends: 76 [2021-08-26 04:46:28,881 INFO L226 Difference]: Without dead ends: 68 [2021-08-26 04:46:28,882 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 53.7ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-08-26 04:46:28,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-08-26 04:46:28,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2021-08-26 04:46:28,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 61 states have (on average 1.2131147540983607) internal successors, (74), 65 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:28,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 74 transitions. [2021-08-26 04:46:28,886 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 74 transitions. Word has length 18 [2021-08-26 04:46:28,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:46:28,886 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 74 transitions. [2021-08-26 04:46:28,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:28,886 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 74 transitions. [2021-08-26 04:46:28,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-26 04:46:28,887 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:46:28,887 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:46:28,905 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-08-26 04:46:29,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:46:29,103 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 04:46:29,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:46:29,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1695505828, now seen corresponding path program 1 times [2021-08-26 04:46:29,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:46:29,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711958999] [2021-08-26 04:46:29,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:46:29,105 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:46:29,112 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:46:29,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1264225813] [2021-08-26 04:46:29,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:46:29,112 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:46:29,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:46:29,113 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:46:29,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-08-26 04:46:29,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 04:46:29,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 27 conjunts are in the unsatisfiable core [2021-08-26 04:46:29,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:46:29,531 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:46:29,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:46:29,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711958999] [2021-08-26 04:46:29,532 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:46:29,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264225813] [2021-08-26 04:46:29,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264225813] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:46:29,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:46:29,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-08-26 04:46:29,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937773670] [2021-08-26 04:46:29,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 04:46:29,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:46:29,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 04:46:29,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-08-26 04:46:29,533 INFO L87 Difference]: Start difference. First operand 66 states and 74 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:29,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:46:29,735 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2021-08-26 04:46:29,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-26 04:46:29,735 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 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 [2021-08-26 04:46:29,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:46:29,736 INFO L225 Difference]: With dead ends: 101 [2021-08-26 04:46:29,736 INFO L226 Difference]: Without dead ends: 99 [2021-08-26 04:46:29,736 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 156.2ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-08-26 04:46:29,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-08-26 04:46:29,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 70. [2021-08-26 04:46:29,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 65 states have (on average 1.2) internal successors, (78), 69 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:29,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2021-08-26 04:46:29,740 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 19 [2021-08-26 04:46:29,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:46:29,741 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2021-08-26 04:46:29,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:29,741 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2021-08-26 04:46:29,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-26 04:46:29,741 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:46:29,741 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:46:29,760 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-08-26 04:46:29,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:46:29,958 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 04:46:29,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:46:29,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1897281469, now seen corresponding path program 1 times [2021-08-26 04:46:29,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:46:29,958 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524835149] [2021-08-26 04:46:29,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:46:29,959 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:46:29,968 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:46:29,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [798051935] [2021-08-26 04:46:29,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:46:29,969 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:46:29,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:46:29,969 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:46:29,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-08-26 04:46:30,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 04:46:30,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 25 conjunts are in the unsatisfiable core [2021-08-26 04:46:30,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:46:30,324 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:46:30,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:46:30,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524835149] [2021-08-26 04:46:30,325 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:46:30,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798051935] [2021-08-26 04:46:30,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798051935] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:46:30,325 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:46:30,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-08-26 04:46:30,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961596319] [2021-08-26 04:46:30,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 04:46:30,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:46:30,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 04:46:30,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-26 04:46:30,327 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:30,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:46:30,404 INFO L93 Difference]: Finished difference Result 112 states and 124 transitions. [2021-08-26 04:46:30,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-26 04:46:30,405 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 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 [2021-08-26 04:46:30,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:46:30,405 INFO L225 Difference]: With dead ends: 112 [2021-08-26 04:46:30,405 INFO L226 Difference]: Without dead ends: 100 [2021-08-26 04:46:30,406 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 29.7ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-26 04:46:30,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-08-26 04:46:30,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 92. [2021-08-26 04:46:30,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 87 states have (on average 1.206896551724138) internal successors, (105), 91 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:30,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 105 transitions. [2021-08-26 04:46:30,412 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 105 transitions. Word has length 21 [2021-08-26 04:46:30,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:46:30,412 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 105 transitions. [2021-08-26 04:46:30,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:30,413 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 105 transitions. [2021-08-26 04:46:30,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-26 04:46:30,413 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:46:30,413 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:46:30,435 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-08-26 04:46:30,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-08-26 04:46:30,628 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 04:46:30,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:46:30,629 INFO L82 PathProgramCache]: Analyzing trace with hash 22725340, now seen corresponding path program 1 times [2021-08-26 04:46:30,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:46:30,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135164198] [2021-08-26 04:46:30,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:46:30,629 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:46:30,636 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:46:30,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [650822717] [2021-08-26 04:46:30,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:46:30,637 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:46:30,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:46:30,637 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:46:30,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-08-26 04:46:30,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 04:46:30,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 19 conjunts are in the unsatisfiable core [2021-08-26 04:46:30,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:46:31,057 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:46:31,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:46:31,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135164198] [2021-08-26 04:46:31,058 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:46:31,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650822717] [2021-08-26 04:46:31,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650822717] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:46:31,058 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:46:31,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-08-26 04:46:31,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204577762] [2021-08-26 04:46:31,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 04:46:31,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:46:31,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 04:46:31,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-26 04:46:31,059 INFO L87 Difference]: Start difference. First operand 92 states and 105 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:31,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:46:31,153 INFO L93 Difference]: Finished difference Result 120 states and 135 transitions. [2021-08-26 04:46:31,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-26 04:46:31,154 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-26 04:46:31,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:46:31,155 INFO L225 Difference]: With dead ends: 120 [2021-08-26 04:46:31,155 INFO L226 Difference]: Without dead ends: 116 [2021-08-26 04:46:31,155 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 44.0ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-08-26 04:46:31,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-08-26 04:46:31,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 103. [2021-08-26 04:46:31,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 98 states have (on average 1.2142857142857142) internal successors, (119), 102 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:31,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 119 transitions. [2021-08-26 04:46:31,161 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 119 transitions. Word has length 25 [2021-08-26 04:46:31,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:46:31,161 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 119 transitions. [2021-08-26 04:46:31,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:31,162 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 119 transitions. [2021-08-26 04:46:31,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-26 04:46:31,162 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:46:31,162 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:46:31,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-08-26 04:46:31,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-08-26 04:46:31,380 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 04:46:31,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:46:31,380 INFO L82 PathProgramCache]: Analyzing trace with hash 280831196, now seen corresponding path program 2 times [2021-08-26 04:46:31,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:46:31,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337187757] [2021-08-26 04:46:31,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:46:31,380 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:46:31,387 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:46:31,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2059378086] [2021-08-26 04:46:31,387 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 04:46:31,387 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:46:31,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:46:31,388 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:46:31,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-08-26 04:46:31,572 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 04:46:31,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 04:46:31,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 19 conjunts are in the unsatisfiable core [2021-08-26 04:46:31,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:46:31,797 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:46:31,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:46:31,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337187757] [2021-08-26 04:46:31,798 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:46:31,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059378086] [2021-08-26 04:46:31,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059378086] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:46:31,798 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:46:31,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-08-26 04:46:31,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965419836] [2021-08-26 04:46:31,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 04:46:31,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:46:31,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 04:46:31,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-26 04:46:31,799 INFO L87 Difference]: Start difference. First operand 103 states and 119 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:31,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:46:31,891 INFO L93 Difference]: Finished difference Result 123 states and 140 transitions. [2021-08-26 04:46:31,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-26 04:46:31,891 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-26 04:46:31,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:46:31,892 INFO L225 Difference]: With dead ends: 123 [2021-08-26 04:46:31,892 INFO L226 Difference]: Without dead ends: 113 [2021-08-26 04:46:31,892 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 43.3ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-08-26 04:46:31,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-08-26 04:46:31,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 110. [2021-08-26 04:46:31,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 105 states have (on average 1.2095238095238094) internal successors, (127), 109 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:31,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 127 transitions. [2021-08-26 04:46:31,898 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 127 transitions. Word has length 25 [2021-08-26 04:46:31,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:46:31,898 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 127 transitions. [2021-08-26 04:46:31,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:31,898 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 127 transitions. [2021-08-26 04:46:31,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-08-26 04:46:31,899 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:46:31,899 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:46:31,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-08-26 04:46:32,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-08-26 04:46:32,117 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 04:46:32,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:46:32,117 INFO L82 PathProgramCache]: Analyzing trace with hash 307112929, now seen corresponding path program 2 times [2021-08-26 04:46:32,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:46:32,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098855267] [2021-08-26 04:46:32,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:46:32,118 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:46:32,124 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:46:32,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2049512781] [2021-08-26 04:46:32,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 04:46:32,124 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:46:32,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:46:32,145 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:46:32,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-08-26 04:46:32,360 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 04:46:32,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 04:46:32,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 36 conjunts are in the unsatisfiable core [2021-08-26 04:46:32,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:46:32,859 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:46:32,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:46:32,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098855267] [2021-08-26 04:46:32,859 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:46:32,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049512781] [2021-08-26 04:46:32,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049512781] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:46:32,860 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:46:32,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-08-26 04:46:32,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126495261] [2021-08-26 04:46:32,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-26 04:46:32,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:46:32,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-26 04:46:32,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-08-26 04:46:32,861 INFO L87 Difference]: Start difference. First operand 110 states and 127 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:33,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:46:33,164 INFO L93 Difference]: Finished difference Result 144 states and 163 transitions. [2021-08-26 04:46:33,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-26 04:46:33,165 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 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 [2021-08-26 04:46:33,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:46:33,165 INFO L225 Difference]: With dead ends: 144 [2021-08-26 04:46:33,165 INFO L226 Difference]: Without dead ends: 142 [2021-08-26 04:46:33,166 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 222.6ms TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-08-26 04:46:33,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-08-26 04:46:33,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 114. [2021-08-26 04:46:33,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 109 states have (on average 1.201834862385321) internal successors, (131), 113 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:33,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 131 transitions. [2021-08-26 04:46:33,171 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 131 transitions. Word has length 27 [2021-08-26 04:46:33,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:46:33,171 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 131 transitions. [2021-08-26 04:46:33,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:33,172 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 131 transitions. [2021-08-26 04:46:33,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-08-26 04:46:33,172 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:46:33,172 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:46:33,192 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-08-26 04:46:33,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-08-26 04:46:33,390 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 04:46:33,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:46:33,390 INFO L82 PathProgramCache]: Analyzing trace with hash -704004321, now seen corresponding path program 1 times [2021-08-26 04:46:33,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:46:33,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170628116] [2021-08-26 04:46:33,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:46:33,391 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:46:33,397 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:46:33,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1190473095] [2021-08-26 04:46:33,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:46:33,397 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:46:33,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:46:33,413 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:46:33,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-08-26 04:46:33,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 04:46:33,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 32 conjunts are in the unsatisfiable core [2021-08-26 04:46:33,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:46:34,273 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:46:34,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:46:34,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170628116] [2021-08-26 04:46:34,273 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:46:34,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190473095] [2021-08-26 04:46:34,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190473095] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:46:34,273 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:46:34,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-08-26 04:46:34,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160145283] [2021-08-26 04:46:34,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 04:46:34,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:46:34,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 04:46:34,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-26 04:46:34,275 INFO L87 Difference]: Start difference. First operand 114 states and 131 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:34,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:46:34,470 INFO L93 Difference]: Finished difference Result 142 states and 160 transitions. [2021-08-26 04:46:34,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-26 04:46:34,470 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-08-26 04:46:34,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:46:34,471 INFO L225 Difference]: With dead ends: 142 [2021-08-26 04:46:34,471 INFO L226 Difference]: Without dead ends: 140 [2021-08-26 04:46:34,471 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 124.9ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-08-26 04:46:34,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-08-26 04:46:34,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 114. [2021-08-26 04:46:34,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 109 states have (on average 1.1926605504587156) internal successors, (130), 113 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:34,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 130 transitions. [2021-08-26 04:46:34,477 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 130 transitions. Word has length 27 [2021-08-26 04:46:34,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:46:34,478 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 130 transitions. [2021-08-26 04:46:34,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:34,478 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 130 transitions. [2021-08-26 04:46:34,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-26 04:46:34,482 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:46:34,482 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:46:34,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-08-26 04:46:34,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-08-26 04:46:34,700 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 04:46:34,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:46:34,701 INFO L82 PathProgramCache]: Analyzing trace with hash -2026408958, now seen corresponding path program 1 times [2021-08-26 04:46:34,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:46:34,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479537969] [2021-08-26 04:46:34,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:46:34,701 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:46:34,707 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:46:34,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1664270219] [2021-08-26 04:46:34,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:46:34,707 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:46:34,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:46:34,716 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:46:34,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-08-26 04:46:35,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 04:46:35,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 41 conjunts are in the unsatisfiable core [2021-08-26 04:46:35,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:46:35,710 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:46:35,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:46:35,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479537969] [2021-08-26 04:46:35,710 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:46:35,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664270219] [2021-08-26 04:46:35,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664270219] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:46:35,710 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:46:35,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-08-26 04:46:35,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262673742] [2021-08-26 04:46:35,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-26 04:46:35,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:46:35,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-26 04:46:35,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-08-26 04:46:35,712 INFO L87 Difference]: Start difference. First operand 114 states and 130 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:35,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:46:35,984 INFO L93 Difference]: Finished difference Result 147 states and 164 transitions. [2021-08-26 04:46:35,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-26 04:46:35,984 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-08-26 04:46:35,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:46:35,985 INFO L225 Difference]: With dead ends: 147 [2021-08-26 04:46:35,985 INFO L226 Difference]: Without dead ends: 135 [2021-08-26 04:46:35,985 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 179.5ms TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-08-26 04:46:35,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-08-26 04:46:35,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 107. [2021-08-26 04:46:35,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 102 states have (on average 1.1862745098039216) internal successors, (121), 106 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:35,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 121 transitions. [2021-08-26 04:46:35,991 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 121 transitions. Word has length 29 [2021-08-26 04:46:35,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:46:35,991 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 121 transitions. [2021-08-26 04:46:35,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:35,992 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 121 transitions. [2021-08-26 04:46:35,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-26 04:46:35,992 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:46:35,992 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:46:36,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-08-26 04:46:36,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-08-26 04:46:36,207 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 04:46:36,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:46:36,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1247489984, now seen corresponding path program 2 times [2021-08-26 04:46:36,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:46:36,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875523867] [2021-08-26 04:46:36,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:46:36,208 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:46:36,214 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:46:36,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1059439988] [2021-08-26 04:46:36,215 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 04:46:36,215 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:46:36,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:46:36,216 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) [2021-08-26 04:46:36,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-08-26 04:46:36,565 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 04:46:36,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 04:46:36,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 34 conjunts are in the unsatisfiable core [2021-08-26 04:46:36,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:46:37,091 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:46:37,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:46:37,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875523867] [2021-08-26 04:46:37,091 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:46:37,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059439988] [2021-08-26 04:46:37,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059439988] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:46:37,092 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:46:37,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-08-26 04:46:37,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633206942] [2021-08-26 04:46:37,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 04:46:37,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:46:37,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 04:46:37,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-26 04:46:37,093 INFO L87 Difference]: Start difference. First operand 107 states and 121 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:37,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:46:37,342 INFO L93 Difference]: Finished difference Result 150 states and 168 transitions. [2021-08-26 04:46:37,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-26 04:46:37,343 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-08-26 04:46:37,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:46:37,343 INFO L225 Difference]: With dead ends: 150 [2021-08-26 04:46:37,343 INFO L226 Difference]: Without dead ends: 138 [2021-08-26 04:46:37,344 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 102.4ms TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-08-26 04:46:37,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-08-26 04:46:37,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 115. [2021-08-26 04:46:37,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 110 states have (on average 1.1818181818181819) internal successors, (130), 114 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:37,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 130 transitions. [2021-08-26 04:46:37,350 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 130 transitions. Word has length 29 [2021-08-26 04:46:37,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:46:37,350 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 130 transitions. [2021-08-26 04:46:37,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:37,350 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 130 transitions. [2021-08-26 04:46:37,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-26 04:46:37,350 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:46:37,351 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:46:37,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-08-26 04:46:37,568 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 [2021-08-26 04:46:37,568 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 04:46:37,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:46:37,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1883919521, now seen corresponding path program 3 times [2021-08-26 04:46:37,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:46:37,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065811181] [2021-08-26 04:46:37,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:46:37,569 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:46:37,576 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:46:37,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2092715664] [2021-08-26 04:46:37,576 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 04:46:37,577 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:46:37,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:46:37,577 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) [2021-08-26 04:46:37,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-08-26 04:46:38,042 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-08-26 04:46:38,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 04:46:38,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 32 conjunts are in the unsatisfiable core [2021-08-26 04:46:38,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:46:38,745 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-08-26 04:46:38,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:46:38,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065811181] [2021-08-26 04:46:38,745 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:46:38,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092715664] [2021-08-26 04:46:38,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092715664] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:46:38,746 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:46:38,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-08-26 04:46:38,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687433592] [2021-08-26 04:46:38,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-26 04:46:38,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:46:38,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-26 04:46:38,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-08-26 04:46:38,747 INFO L87 Difference]: Start difference. First operand 115 states and 130 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:41,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:46:41,152 INFO L93 Difference]: Finished difference Result 149 states and 165 transitions. [2021-08-26 04:46:41,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-26 04:46:41,153 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-08-26 04:46:41,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:46:41,154 INFO L225 Difference]: With dead ends: 149 [2021-08-26 04:46:41,154 INFO L226 Difference]: Without dead ends: 145 [2021-08-26 04:46:41,154 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 627.0ms TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2021-08-26 04:46:41,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-08-26 04:46:41,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 122. [2021-08-26 04:46:41,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 117 states have (on average 1.188034188034188) internal successors, (139), 121 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:41,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 139 transitions. [2021-08-26 04:46:41,175 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 139 transitions. Word has length 33 [2021-08-26 04:46:41,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:46:41,175 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 139 transitions. [2021-08-26 04:46:41,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:41,175 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 139 transitions. [2021-08-26 04:46:41,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-26 04:46:41,175 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:46:41,175 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:46:41,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-08-26 04:46:41,376 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 [2021-08-26 04:46:41,376 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 04:46:41,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:46:41,376 INFO L82 PathProgramCache]: Analyzing trace with hash 2142025377, now seen corresponding path program 4 times [2021-08-26 04:46:41,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:46:41,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715689717] [2021-08-26 04:46:41,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:46:41,377 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:46:41,389 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:46:41,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1581347807] [2021-08-26 04:46:41,390 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-26 04:46:41,390 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:46:41,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:46:41,391 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) [2021-08-26 04:46:41,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-08-26 04:46:41,836 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-26 04:46:41,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 04:46:41,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 23 conjunts are in the unsatisfiable core [2021-08-26 04:46:41,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:46:42,226 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:46:42,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:46:42,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715689717] [2021-08-26 04:46:42,226 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:46:42,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581347807] [2021-08-26 04:46:42,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581347807] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:46:42,227 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:46:42,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-08-26 04:46:42,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371292109] [2021-08-26 04:46:42,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 04:46:42,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:46:42,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 04:46:42,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-26 04:46:42,227 INFO L87 Difference]: Start difference. First operand 122 states and 139 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:42,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:46:42,380 INFO L93 Difference]: Finished difference Result 150 states and 169 transitions. [2021-08-26 04:46:42,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-26 04:46:42,380 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-08-26 04:46:42,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:46:42,381 INFO L225 Difference]: With dead ends: 150 [2021-08-26 04:46:42,381 INFO L226 Difference]: Without dead ends: 140 [2021-08-26 04:46:42,381 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 66.0ms TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-08-26 04:46:42,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-08-26 04:46:42,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 134. [2021-08-26 04:46:42,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 129 states have (on average 1.186046511627907) internal successors, (153), 133 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:42,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 153 transitions. [2021-08-26 04:46:42,396 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 153 transitions. Word has length 33 [2021-08-26 04:46:42,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:46:42,396 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 153 transitions. [2021-08-26 04:46:42,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:42,396 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 153 transitions. [2021-08-26 04:46:42,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-26 04:46:42,397 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:46:42,397 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:46:42,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-08-26 04:46:42,617 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 [2021-08-26 04:46:42,617 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 04:46:42,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:46:42,619 INFO L82 PathProgramCache]: Analyzing trace with hash 2142084959, now seen corresponding path program 5 times [2021-08-26 04:46:42,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:46:42,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299016192] [2021-08-26 04:46:42,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:46:42,619 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:46:42,624 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:46:42,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1441497321] [2021-08-26 04:46:42,624 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-26 04:46:42,624 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:46:42,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:46:42,627 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) [2021-08-26 04:46:42,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-08-26 04:46:43,331 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-08-26 04:46:43,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 04:46:43,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 23 conjunts are in the unsatisfiable core [2021-08-26 04:46:43,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:46:43,666 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:46:43,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:46:43,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299016192] [2021-08-26 04:46:43,667 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:46:43,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441497321] [2021-08-26 04:46:43,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441497321] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:46:43,667 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:46:43,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-08-26 04:46:43,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966365462] [2021-08-26 04:46:43,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 04:46:43,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:46:43,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 04:46:43,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-26 04:46:43,668 INFO L87 Difference]: Start difference. First operand 134 states and 153 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:43,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:46:43,837 INFO L93 Difference]: Finished difference Result 158 states and 178 transitions. [2021-08-26 04:46:43,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-26 04:46:43,837 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-08-26 04:46:43,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:46:43,838 INFO L225 Difference]: With dead ends: 158 [2021-08-26 04:46:43,838 INFO L226 Difference]: Without dead ends: 154 [2021-08-26 04:46:43,838 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 66.7ms TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-08-26 04:46:43,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-08-26 04:46:43,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 134. [2021-08-26 04:46:43,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 129 states have (on average 1.186046511627907) internal successors, (153), 133 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:43,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 153 transitions. [2021-08-26 04:46:43,847 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 153 transitions. Word has length 33 [2021-08-26 04:46:43,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:46:43,847 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 153 transitions. [2021-08-26 04:46:43,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:43,847 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 153 transitions. [2021-08-26 04:46:43,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-26 04:46:43,847 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:46:43,847 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:46:43,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-08-26 04:46:44,054 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 [2021-08-26 04:46:44,054 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 04:46:44,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:46:44,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1066211489, now seen corresponding path program 6 times [2021-08-26 04:46:44,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:46:44,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669935187] [2021-08-26 04:46:44,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:46:44,055 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:46:44,065 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:46:44,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [501706784] [2021-08-26 04:46:44,065 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-26 04:46:44,065 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:46:44,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:46:44,065 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) [2021-08-26 04:46:44,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-08-26 04:46:44,599 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-08-26 04:46:44,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 04:46:44,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 23 conjunts are in the unsatisfiable core [2021-08-26 04:46:44,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:46:44,921 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:46:44,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:46:44,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669935187] [2021-08-26 04:46:44,922 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:46:44,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501706784] [2021-08-26 04:46:44,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501706784] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:46:44,922 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:46:44,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-08-26 04:46:44,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625138449] [2021-08-26 04:46:44,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 04:46:44,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:46:44,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 04:46:44,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-26 04:46:44,923 INFO L87 Difference]: Start difference. First operand 134 states and 153 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:45,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:46:45,083 INFO L93 Difference]: Finished difference Result 158 states and 179 transitions. [2021-08-26 04:46:45,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-26 04:46:45,084 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-08-26 04:46:45,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:46:45,084 INFO L225 Difference]: With dead ends: 158 [2021-08-26 04:46:45,084 INFO L226 Difference]: Without dead ends: 148 [2021-08-26 04:46:45,085 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 76.6ms TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-08-26 04:46:45,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-08-26 04:46:45,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 138. [2021-08-26 04:46:45,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 133 states have (on average 1.1879699248120301) internal successors, (158), 137 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:45,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 158 transitions. [2021-08-26 04:46:45,096 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 158 transitions. Word has length 33 [2021-08-26 04:46:45,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:46:45,096 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 158 transitions. [2021-08-26 04:46:45,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:45,096 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 158 transitions. [2021-08-26 04:46:45,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-26 04:46:45,097 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:46:45,097 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:46:45,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-08-26 04:46:45,313 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 [2021-08-26 04:46:45,313 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 04:46:45,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:46:45,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1066271071, now seen corresponding path program 7 times [2021-08-26 04:46:45,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:46:45,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636281963] [2021-08-26 04:46:45,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:46:45,314 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:46:45,320 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:46:45,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [259615037] [2021-08-26 04:46:45,323 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-26 04:46:45,323 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:46:45,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:46:45,324 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:46:45,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-08-26 04:46:45,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 04:46:45,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 23 conjunts are in the unsatisfiable core [2021-08-26 04:46:45,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:46:46,212 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:46:46,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:46:46,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636281963] [2021-08-26 04:46:46,213 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:46:46,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259615037] [2021-08-26 04:46:46,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259615037] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:46:46,213 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:46:46,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-08-26 04:46:46,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017563373] [2021-08-26 04:46:46,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 04:46:46,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:46:46,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 04:46:46,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-26 04:46:46,214 INFO L87 Difference]: Start difference. First operand 138 states and 158 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:46,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:46:46,555 INFO L93 Difference]: Finished difference Result 162 states and 183 transitions. [2021-08-26 04:46:46,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-26 04:46:46,556 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-08-26 04:46:46,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:46:46,557 INFO L225 Difference]: With dead ends: 162 [2021-08-26 04:46:46,557 INFO L226 Difference]: Without dead ends: 158 [2021-08-26 04:46:46,557 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 66.8ms TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-08-26 04:46:46,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-08-26 04:46:46,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 130. [2021-08-26 04:46:46,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 125 states have (on average 1.192) internal successors, (149), 129 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:46,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 149 transitions. [2021-08-26 04:46:46,579 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 149 transitions. Word has length 33 [2021-08-26 04:46:46,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:46:46,579 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 149 transitions. [2021-08-26 04:46:46,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:46,580 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 149 transitions. [2021-08-26 04:46:46,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-26 04:46:46,580 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:46:46,580 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:46:46,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-08-26 04:46:46,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:46:46,780 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 04:46:46,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:46:46,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1324376927, now seen corresponding path program 8 times [2021-08-26 04:46:46,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:46:46,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398285479] [2021-08-26 04:46:46,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:46:46,781 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:46:46,788 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:46:46,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1898539850] [2021-08-26 04:46:46,788 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 04:46:46,788 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:46:46,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:46:46,793 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:46:46,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-08-26 04:46:47,371 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 04:46:47,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 04:46:47,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 17 conjunts are in the unsatisfiable core [2021-08-26 04:46:47,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:46:47,587 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-08-26 04:46:47,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:46:47,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398285479] [2021-08-26 04:46:47,587 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:46:47,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898539850] [2021-08-26 04:46:47,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898539850] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:46:47,588 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:46:47,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-08-26 04:46:47,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018926273] [2021-08-26 04:46:47,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 04:46:47,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:46:47,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 04:46:47,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-26 04:46:47,588 INFO L87 Difference]: Start difference. First operand 130 states and 149 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:47,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:46:47,671 INFO L93 Difference]: Finished difference Result 190 states and 213 transitions. [2021-08-26 04:46:47,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 04:46:47,672 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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 33 [2021-08-26 04:46:47,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:46:47,672 INFO L225 Difference]: With dead ends: 190 [2021-08-26 04:46:47,672 INFO L226 Difference]: Without dead ends: 180 [2021-08-26 04:46:47,672 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 26.3ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-26 04:46:47,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-08-26 04:46:47,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 134. [2021-08-26 04:46:47,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 129 states have (on average 1.193798449612403) internal successors, (154), 133 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:47,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 154 transitions. [2021-08-26 04:46:47,681 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 154 transitions. Word has length 33 [2021-08-26 04:46:47,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:46:47,681 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 154 transitions. [2021-08-26 04:46:47,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:47,681 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 154 transitions. [2021-08-26 04:46:47,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-08-26 04:46:47,682 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:46:47,682 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:46:47,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-08-26 04:46:47,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-08-26 04:46:47,901 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 04:46:47,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:46:47,902 INFO L82 PathProgramCache]: Analyzing trace with hash -2086641562, now seen corresponding path program 3 times [2021-08-26 04:46:47,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:46:47,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687326993] [2021-08-26 04:46:47,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:46:47,902 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:46:47,908 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:46:47,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1475748675] [2021-08-26 04:46:47,908 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 04:46:47,908 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:46:47,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:46:47,909 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:46:47,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-08-26 04:46:48,534 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-08-26 04:46:48,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 04:46:48,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 29 conjunts are in the unsatisfiable core [2021-08-26 04:46:48,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:46:48,864 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-08-26 04:46:48,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:46:48,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687326993] [2021-08-26 04:46:48,864 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:46:48,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475748675] [2021-08-26 04:46:48,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475748675] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:46:48,865 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:46:48,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-08-26 04:46:48,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552232101] [2021-08-26 04:46:48,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-26 04:46:48,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:46:48,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-26 04:46:48,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-08-26 04:46:48,866 INFO L87 Difference]: Start difference. First operand 134 states and 154 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:49,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:46:49,041 INFO L93 Difference]: Finished difference Result 182 states and 205 transitions. [2021-08-26 04:46:49,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 04:46:49,041 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 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 35 [2021-08-26 04:46:49,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:46:49,042 INFO L225 Difference]: With dead ends: 182 [2021-08-26 04:46:49,042 INFO L226 Difference]: Without dead ends: 180 [2021-08-26 04:46:49,042 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 107.2ms TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-08-26 04:46:49,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-08-26 04:46:49,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 130. [2021-08-26 04:46:49,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 125 states have (on average 1.192) internal successors, (149), 129 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:49,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 149 transitions. [2021-08-26 04:46:49,052 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 149 transitions. Word has length 35 [2021-08-26 04:46:49,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:46:49,052 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 149 transitions. [2021-08-26 04:46:49,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:49,052 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 149 transitions. [2021-08-26 04:46:49,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-08-26 04:46:49,052 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:46:49,052 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:46:49,070 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-08-26 04:46:49,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-08-26 04:46:49,271 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 04:46:49,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:46:49,271 INFO L82 PathProgramCache]: Analyzing trace with hash 1197208484, now seen corresponding path program 2 times [2021-08-26 04:46:49,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:46:49,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325438375] [2021-08-26 04:46:49,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:46:49,272 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:46:49,277 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:46:49,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1463377979] [2021-08-26 04:46:49,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 04:46:49,278 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:46:49,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:46:49,280 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:46:49,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-08-26 04:46:49,939 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 04:46:49,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 04:46:49,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 43 conjunts are in the unsatisfiable core [2021-08-26 04:46:49,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:46:50,687 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:46:50,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:46:50,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325438375] [2021-08-26 04:46:50,688 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:46:50,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463377979] [2021-08-26 04:46:50,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463377979] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:46:50,688 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:46:50,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-08-26 04:46:50,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271867102] [2021-08-26 04:46:50,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-26 04:46:50,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:46:50,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-26 04:46:50,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-08-26 04:46:50,689 INFO L87 Difference]: Start difference. First operand 130 states and 149 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:51,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:46:51,347 INFO L93 Difference]: Finished difference Result 173 states and 195 transitions. [2021-08-26 04:46:51,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-26 04:46:51,347 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-08-26 04:46:51,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:46:51,348 INFO L225 Difference]: With dead ends: 173 [2021-08-26 04:46:51,348 INFO L226 Difference]: Without dead ends: 171 [2021-08-26 04:46:51,348 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 303.8ms TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-08-26 04:46:51,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-08-26 04:46:51,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 142. [2021-08-26 04:46:51,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 137 states have (on average 1.1824817518248176) internal successors, (162), 141 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:51,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 162 transitions. [2021-08-26 04:46:51,364 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 162 transitions. Word has length 35 [2021-08-26 04:46:51,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:46:51,364 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 162 transitions. [2021-08-26 04:46:51,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:51,365 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 162 transitions. [2021-08-26 04:46:51,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-08-26 04:46:51,365 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:46:51,365 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:46:51,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-08-26 04:46:51,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:46:51,581 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 04:46:51,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:46:51,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1867786844, now seen corresponding path program 3 times [2021-08-26 04:46:51,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:46:51,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482625504] [2021-08-26 04:46:51,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:46:51,582 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:46:51,592 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:46:51,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1176726939] [2021-08-26 04:46:51,593 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 04:46:51,593 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:46:51,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:46:51,593 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:46:51,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-08-26 04:46:52,354 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-08-26 04:46:52,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 04:46:52,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 23 conjunts are in the unsatisfiable core [2021-08-26 04:46:52,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:46:52,504 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-08-26 04:46:52,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:46:52,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482625504] [2021-08-26 04:46:52,504 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:46:52,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176726939] [2021-08-26 04:46:52,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176726939] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:46:52,505 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:46:52,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-08-26 04:46:52,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396119672] [2021-08-26 04:46:52,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 04:46:52,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:46:52,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 04:46:52,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-08-26 04:46:52,506 INFO L87 Difference]: Start difference. First operand 142 states and 162 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:52,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:46:52,980 INFO L93 Difference]: Finished difference Result 142 states and 162 transitions. [2021-08-26 04:46:52,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 04:46:52,980 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-08-26 04:46:52,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:46:52,981 INFO L225 Difference]: With dead ends: 142 [2021-08-26 04:46:52,981 INFO L226 Difference]: Without dead ends: 128 [2021-08-26 04:46:52,981 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 57.7ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-08-26 04:46:52,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-08-26 04:46:52,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 79. [2021-08-26 04:46:52,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 77 states have (on average 1.1168831168831168) internal successors, (86), 78 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) [2021-08-26 04:46:52,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 86 transitions. [2021-08-26 04:46:52,989 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 86 transitions. Word has length 35 [2021-08-26 04:46:52,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:46:52,989 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 86 transitions. [2021-08-26 04:46:52,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:52,990 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 86 transitions. [2021-08-26 04:46:52,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-08-26 04:46:52,990 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:46:52,990 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:46:53,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-08-26 04:46:53,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:46:53,209 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 04:46:53,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:46:53,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1797567334, now seen corresponding path program 9 times [2021-08-26 04:46:53,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:46:53,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781864538] [2021-08-26 04:46:53,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:46:53,210 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:46:53,216 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:46:53,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1154328685] [2021-08-26 04:46:53,216 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 04:46:53,216 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:46:53,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:46:53,217 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:46:53,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-08-26 04:46:53,981 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-08-26 04:46:53,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 04:46:53,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-26 04:46:53,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:46:54,240 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-08-26 04:46:54,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:46:54,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781864538] [2021-08-26 04:46:54,241 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:46:54,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154328685] [2021-08-26 04:46:54,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154328685] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:46:54,241 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:46:54,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-08-26 04:46:54,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583059176] [2021-08-26 04:46:54,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 04:46:54,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:46:54,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 04:46:54,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-08-26 04:46:54,242 INFO L87 Difference]: Start difference. First operand 79 states and 86 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:56,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:46:56,016 INFO L93 Difference]: Finished difference Result 120 states and 130 transitions. [2021-08-26 04:46:56,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-26 04:46:56,016 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-08-26 04:46:56,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:46:56,017 INFO L225 Difference]: With dead ends: 120 [2021-08-26 04:46:56,017 INFO L226 Difference]: Without dead ends: 110 [2021-08-26 04:46:56,017 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 191.4ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-08-26 04:46:56,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-08-26 04:46:56,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 87. [2021-08-26 04:46:56,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 85 states have (on average 1.1176470588235294) internal successors, (95), 86 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:56,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 95 transitions. [2021-08-26 04:46:56,027 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 95 transitions. Word has length 41 [2021-08-26 04:46:56,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:46:56,027 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 95 transitions. [2021-08-26 04:46:56,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:56,028 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 95 transitions. [2021-08-26 04:46:56,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-08-26 04:46:56,028 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:46:56,028 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:46:56,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-08-26 04:46:56,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-08-26 04:46:56,243 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 04:46:56,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:46:56,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1797626916, now seen corresponding path program 10 times [2021-08-26 04:46:56,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:46:56,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631107230] [2021-08-26 04:46:56,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:46:56,244 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:46:56,268 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:46:56,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1885164782] [2021-08-26 04:46:56,273 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-26 04:46:56,273 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:46:56,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:46:56,274 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:46:56,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-08-26 04:46:57,032 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-26 04:46:57,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 04:46:57,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 27 conjunts are in the unsatisfiable core [2021-08-26 04:46:57,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:46:57,502 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:46:57,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:46:57,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631107230] [2021-08-26 04:46:57,503 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:46:57,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885164782] [2021-08-26 04:46:57,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885164782] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:46:57,503 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:46:57,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-08-26 04:46:57,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684036071] [2021-08-26 04:46:57,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 04:46:57,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:46:57,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 04:46:57,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-26 04:46:57,505 INFO L87 Difference]: Start difference. First operand 87 states and 95 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 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) [2021-08-26 04:46:57,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:46:57,763 INFO L93 Difference]: Finished difference Result 121 states and 132 transitions. [2021-08-26 04:46:57,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-26 04:46:57,764 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 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) Word has length 41 [2021-08-26 04:46:57,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:46:57,764 INFO L225 Difference]: With dead ends: 121 [2021-08-26 04:46:57,764 INFO L226 Difference]: Without dead ends: 111 [2021-08-26 04:46:57,765 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 95.9ms TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-08-26 04:46:57,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-08-26 04:46:57,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 95. [2021-08-26 04:46:57,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 93 states have (on average 1.118279569892473) internal successors, (104), 94 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:57,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 104 transitions. [2021-08-26 04:46:57,776 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 104 transitions. Word has length 41 [2021-08-26 04:46:57,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:46:57,776 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 104 transitions. [2021-08-26 04:46:57,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 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) [2021-08-26 04:46:57,776 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 104 transitions. [2021-08-26 04:46:57,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-08-26 04:46:57,776 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:46:57,777 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:46:57,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-08-26 04:46:57,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-08-26 04:46:57,995 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 04:46:57,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:46:57,996 INFO L82 PathProgramCache]: Analyzing trace with hash 721753446, now seen corresponding path program 11 times [2021-08-26 04:46:57,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:46:57,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736867731] [2021-08-26 04:46:57,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:46:57,996 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:46:58,002 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:46:58,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [948388272] [2021-08-26 04:46:58,002 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-26 04:46:58,002 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:46:58,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:46:58,011 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:46:58,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-08-26 04:46:59,176 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-08-26 04:46:59,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 04:46:59,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 27 conjunts are in the unsatisfiable core [2021-08-26 04:46:59,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:46:59,595 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:46:59,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:46:59,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736867731] [2021-08-26 04:46:59,596 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:46:59,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948388272] [2021-08-26 04:46:59,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948388272] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:46:59,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:46:59,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-08-26 04:46:59,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928097418] [2021-08-26 04:46:59,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 04:46:59,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:46:59,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 04:46:59,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-26 04:46:59,597 INFO L87 Difference]: Start difference. First operand 95 states and 104 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 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) [2021-08-26 04:46:59,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:46:59,920 INFO L93 Difference]: Finished difference Result 129 states and 141 transitions. [2021-08-26 04:46:59,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-26 04:46:59,921 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 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) Word has length 41 [2021-08-26 04:46:59,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:46:59,921 INFO L225 Difference]: With dead ends: 129 [2021-08-26 04:46:59,921 INFO L226 Difference]: Without dead ends: 119 [2021-08-26 04:46:59,922 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 94.2ms TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-08-26 04:46:59,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-08-26 04:46:59,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 103. [2021-08-26 04:46:59,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 101 states have (on average 1.118811881188119) internal successors, (113), 102 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:46:59,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 113 transitions. [2021-08-26 04:46:59,940 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 113 transitions. Word has length 41 [2021-08-26 04:46:59,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:46:59,940 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 113 transitions. [2021-08-26 04:46:59,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 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) [2021-08-26 04:46:59,940 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 113 transitions. [2021-08-26 04:46:59,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-08-26 04:46:59,940 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:46:59,941 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:46:59,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-08-26 04:47:00,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-08-26 04:47:00,150 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 04:47:00,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:47:00,150 INFO L82 PathProgramCache]: Analyzing trace with hash 721813028, now seen corresponding path program 12 times [2021-08-26 04:47:00,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:47:00,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832624648] [2021-08-26 04:47:00,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:00,151 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:47:00,184 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:47:00,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [901775188] [2021-08-26 04:47:00,185 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-26 04:47:00,185 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:00,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:47:00,186 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:47:00,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-08-26 04:47:00,982 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-08-26 04:47:00,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 04:47:00,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 27 conjunts are in the unsatisfiable core [2021-08-26 04:47:00,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:47:01,455 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:47:01,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:47:01,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832624648] [2021-08-26 04:47:01,456 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:47:01,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901775188] [2021-08-26 04:47:01,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901775188] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:47:01,457 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:47:01,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-08-26 04:47:01,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839920729] [2021-08-26 04:47:01,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 04:47:01,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:47:01,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 04:47:01,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-26 04:47:01,458 INFO L87 Difference]: Start difference. First operand 103 states and 113 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 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) [2021-08-26 04:47:01,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:47:01,775 INFO L93 Difference]: Finished difference Result 129 states and 141 transitions. [2021-08-26 04:47:01,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-26 04:47:01,775 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 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) Word has length 41 [2021-08-26 04:47:01,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:47:01,776 INFO L225 Difference]: With dead ends: 129 [2021-08-26 04:47:01,776 INFO L226 Difference]: Without dead ends: 119 [2021-08-26 04:47:01,776 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 145.4ms TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-08-26 04:47:01,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-08-26 04:47:01,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 103. [2021-08-26 04:47:01,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 101 states have (on average 1.118811881188119) internal successors, (113), 102 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:01,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 113 transitions. [2021-08-26 04:47:01,805 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 113 transitions. Word has length 41 [2021-08-26 04:47:01,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:47:01,805 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 113 transitions. [2021-08-26 04:47:01,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 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) [2021-08-26 04:47:01,806 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 113 transitions. [2021-08-26 04:47:01,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-08-26 04:47:01,806 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:47:01,806 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:47:01,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-08-26 04:47:02,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-08-26 04:47:02,007 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 04:47:02,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:47:02,007 INFO L82 PathProgramCache]: Analyzing trace with hash 979918884, now seen corresponding path program 13 times [2021-08-26 04:47:02,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:47:02,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855946456] [2021-08-26 04:47:02,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:02,008 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:47:02,014 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:47:02,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1840406878] [2021-08-26 04:47:02,014 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-26 04:47:02,014 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:02,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:47:02,017 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:47:02,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-08-26 04:47:02,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 04:47:02,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 27 conjunts are in the unsatisfiable core [2021-08-26 04:47:02,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:47:03,293 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:47:03,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:47:03,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855946456] [2021-08-26 04:47:03,293 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:47:03,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840406878] [2021-08-26 04:47:03,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840406878] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:47:03,293 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:47:03,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-08-26 04:47:03,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811940902] [2021-08-26 04:47:03,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 04:47:03,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:47:03,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 04:47:03,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-26 04:47:03,294 INFO L87 Difference]: Start difference. First operand 103 states and 113 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 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) [2021-08-26 04:47:03,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:47:03,625 INFO L93 Difference]: Finished difference Result 129 states and 141 transitions. [2021-08-26 04:47:03,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-26 04:47:03,625 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 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) Word has length 41 [2021-08-26 04:47:03,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:47:03,626 INFO L225 Difference]: With dead ends: 129 [2021-08-26 04:47:03,626 INFO L226 Difference]: Without dead ends: 119 [2021-08-26 04:47:03,626 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 105.2ms TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-08-26 04:47:03,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-08-26 04:47:03,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 103. [2021-08-26 04:47:03,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 101 states have (on average 1.118811881188119) internal successors, (113), 102 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:03,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 113 transitions. [2021-08-26 04:47:03,639 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 113 transitions. Word has length 41 [2021-08-26 04:47:03,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:47:03,640 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 113 transitions. [2021-08-26 04:47:03,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 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) [2021-08-26 04:47:03,640 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 113 transitions. [2021-08-26 04:47:03,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-08-26 04:47:03,640 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:47:03,640 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:47:03,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-08-26 04:47:03,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-08-26 04:47:03,860 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 04:47:03,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:47:03,860 INFO L82 PathProgramCache]: Analyzing trace with hash 979978466, now seen corresponding path program 14 times [2021-08-26 04:47:03,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:47:03,861 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035165077] [2021-08-26 04:47:03,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:03,861 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:47:03,868 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:47:03,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [74450166] [2021-08-26 04:47:03,868 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 04:47:03,868 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:03,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:47:03,869 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:47:03,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-08-26 04:47:04,726 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 04:47:04,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 04:47:04,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 27 conjunts are in the unsatisfiable core [2021-08-26 04:47:04,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:47:05,155 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:47:05,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:47:05,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035165077] [2021-08-26 04:47:05,156 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:47:05,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74450166] [2021-08-26 04:47:05,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74450166] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:47:05,156 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:47:05,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-08-26 04:47:05,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869516830] [2021-08-26 04:47:05,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 04:47:05,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:47:05,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 04:47:05,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-26 04:47:05,157 INFO L87 Difference]: Start difference. First operand 103 states and 113 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 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) [2021-08-26 04:47:05,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:47:05,361 INFO L93 Difference]: Finished difference Result 129 states and 141 transitions. [2021-08-26 04:47:05,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-26 04:47:05,361 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 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) Word has length 41 [2021-08-26 04:47:05,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:47:05,362 INFO L225 Difference]: With dead ends: 129 [2021-08-26 04:47:05,362 INFO L226 Difference]: Without dead ends: 119 [2021-08-26 04:47:05,362 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 86.6ms TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-08-26 04:47:05,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-08-26 04:47:05,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 103. [2021-08-26 04:47:05,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 101 states have (on average 1.118811881188119) internal successors, (113), 102 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:05,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 113 transitions. [2021-08-26 04:47:05,377 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 113 transitions. Word has length 41 [2021-08-26 04:47:05,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:47:05,377 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 113 transitions. [2021-08-26 04:47:05,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 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) [2021-08-26 04:47:05,378 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 113 transitions. [2021-08-26 04:47:05,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-08-26 04:47:05,378 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:47:05,378 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:47:05,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-08-26 04:47:05,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:05,599 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 04:47:05,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:47:05,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1029928806, now seen corresponding path program 15 times [2021-08-26 04:47:05,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:47:05,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661449061] [2021-08-26 04:47:05,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:05,599 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:47:05,621 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:47:05,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [977688194] [2021-08-26 04:47:05,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 04:47:05,622 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:05,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:47:05,637 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:47:05,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-08-26 04:47:06,680 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-08-26 04:47:06,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 04:47:06,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 16 conjunts are in the unsatisfiable core [2021-08-26 04:47:06,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:47:06,802 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-08-26 04:47:06,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:47:06,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661449061] [2021-08-26 04:47:06,802 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:47:06,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977688194] [2021-08-26 04:47:06,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977688194] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:47:06,802 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:47:06,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-08-26 04:47:06,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17247014] [2021-08-26 04:47:06,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 04:47:06,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:47:06,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 04:47:06,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-26 04:47:06,803 INFO L87 Difference]: Start difference. First operand 103 states and 113 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:06,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:47:06,870 INFO L93 Difference]: Finished difference Result 103 states and 113 transitions. [2021-08-26 04:47:06,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 04:47:06,870 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-08-26 04:47:06,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:47:06,870 INFO L225 Difference]: With dead ends: 103 [2021-08-26 04:47:06,870 INFO L226 Difference]: Without dead ends: 0 [2021-08-26 04:47:06,873 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.6ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-26 04:47:06,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-26 04:47:06,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-26 04:47:06,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:06,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-26 04:47:06,873 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2021-08-26 04:47:06,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:47:06,873 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-26 04:47:06,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:06,873 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-26 04:47:06,873 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-26 04:47:06,876 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 04:47:06,876 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 04:47:06,876 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 04:47:06,876 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 04:47:06,877 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 04:47:06,877 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 04:47:06,877 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 04:47:06,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-08-26 04:47:07,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-08-26 04:47:07,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-26 04:47:07,095 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 04:47:07,096 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 04:47:07,209 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 04:47:07,210 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 04:47:07,365 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 04:47:07,498 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 04:47:07,553 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 04:47:07,601 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 04:47:07,713 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 04:47:15,396 WARN L207 SmtUtils]: Spent 5.85 s on a formula simplification. DAG size of input: 231 DAG size of output: 29 [2021-08-26 04:47:27,314 WARN L207 SmtUtils]: Spent 6.57 s on a formula simplification. DAG size of input: 207 DAG size of output: 41 [2021-08-26 04:47:32,909 WARN L207 SmtUtils]: Spent 5.59 s on a formula simplification. DAG size of input: 249 DAG size of output: 30 [2021-08-26 04:47:36,609 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-26 04:47:36,609 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2021-08-26 04:47:36,609 INFO L853 garLoopResultBuilder]: At program point L11-2(lines 10 16) the Hoare annotation is: (and (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0) 1) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~y~0) (<= 1 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0)))) [2021-08-26 04:47:36,609 INFO L857 garLoopResultBuilder]: For program point L11-3(lines 11 14) no Hoare annotation was computed. [2021-08-26 04:47:36,609 INFO L853 garLoopResultBuilder]: At program point L11-5(lines 10 16) the Hoare annotation is: (and (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0) 1) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~y~0) (<= 1 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0)))) [2021-08-26 04:47:36,609 INFO L857 garLoopResultBuilder]: For program point L11-6(lines 11 14) no Hoare annotation was computed. [2021-08-26 04:47:36,610 INFO L853 garLoopResultBuilder]: At program point L11-8(lines 38 39) the Hoare annotation is: (and (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0) 1) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~y~0) (<= 1 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0)))) [2021-08-26 04:47:36,610 INFO L857 garLoopResultBuilder]: For program point L11-9(lines 11 14) no Hoare annotation was computed. [2021-08-26 04:47:36,610 INFO L853 garLoopResultBuilder]: At program point L11-11(lines 10 16) the Hoare annotation is: (and (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0) 1) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~y~0) (<= 1 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~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)))) [2021-08-26 04:47:36,610 INFO L857 garLoopResultBuilder]: For program point L11-12(lines 11 14) no Hoare annotation was computed. [2021-08-26 04:47:36,610 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-26 04:47:36,610 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-26 04:47:36,610 INFO L853 garLoopResultBuilder]: At program point L11-14(lines 10 16) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_main_~p~0 1)) (.cse4 (= ULTIMATE.start_main_~q~0 0)) (.cse5 (= ULTIMATE.start_main_~s~0 1)) (.cse7 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (<= 1 ULTIMATE.start_main_~y~0)) (.cse6 (<= 1 ULTIMATE.start_main_~x~0)) (.cse8 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0))) (or (and .cse0 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) .cse1 .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~r~0 0) .cse5 .cse6 .cse7) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse8 .cse7) (and (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0) .cse0 (= (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0) 1) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0)) .cse2 .cse3 .cse6 .cse8 (= 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)))))) [2021-08-26 04:47:36,610 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-26 04:47:36,610 INFO L857 garLoopResultBuilder]: For program point L11-15(lines 11 14) no Hoare annotation was computed. [2021-08-26 04:47:36,610 INFO L853 garLoopResultBuilder]: At program point L11-17(lines 10 16) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= 1 ULTIMATE.start_main_~y~0)) (.cse2 (<= 1 ULTIMATE.start_main_~x~0))) (or (and (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0) .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~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)))) (and .cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse1 (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~s~0 1) .cse2 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)))) [2021-08-26 04:47:36,610 INFO L857 garLoopResultBuilder]: For program point L11-18(lines 11 14) no Hoare annotation was computed. [2021-08-26 04:47:36,610 INFO L860 garLoopResultBuilder]: At program point L11-20(lines 10 16) the Hoare annotation is: true [2021-08-26 04:47:36,610 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2021-08-26 04:47:36,610 INFO L857 garLoopResultBuilder]: For program point L12-1(lines 12 13) no Hoare annotation was computed. [2021-08-26 04:47:36,610 INFO L857 garLoopResultBuilder]: For program point L12-2(lines 12 13) no Hoare annotation was computed. [2021-08-26 04:47:36,610 INFO L857 garLoopResultBuilder]: For program point L12-3(lines 12 13) no Hoare annotation was computed. [2021-08-26 04:47:36,610 INFO L857 garLoopResultBuilder]: For program point L12-4(lines 12 13) no Hoare annotation was computed. [2021-08-26 04:47:36,610 INFO L857 garLoopResultBuilder]: For program point L12-5(lines 12 13) no Hoare annotation was computed. [2021-08-26 04:47:36,610 INFO L857 garLoopResultBuilder]: For program point L12-6(lines 12 13) no Hoare annotation was computed. [2021-08-26 04:47:36,610 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-26 04:47:36,610 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-26 04:47:36,611 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-26 04:47:36,611 INFO L860 garLoopResultBuilder]: At program point L56(lines 18 57) the Hoare annotation is: true [2021-08-26 04:47:36,611 INFO L857 garLoopResultBuilder]: For program point L7(lines 7 9) no Hoare annotation was computed. [2021-08-26 04:47:36,611 INFO L857 garLoopResultBuilder]: For program point L7-1(lines 7 9) no Hoare annotation was computed. [2021-08-26 04:47:36,611 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-26 04:47:36,611 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-26 04:47:36,611 INFO L857 garLoopResultBuilder]: For program point L41(lines 41 49) no Hoare annotation was computed. [2021-08-26 04:47:36,611 INFO L857 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2021-08-26 04:47:36,611 INFO L853 garLoopResultBuilder]: At program point L41-2(lines 33 50) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= 1 ULTIMATE.start_main_~y~0)) (.cse2 (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0))))) (or (and (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0) .cse0 (= (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0) 1) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse1 (<= 1 ULTIMATE.start_main_~x~0) .cse2) (and .cse0 (= ULTIMATE.start_main_~p~0 1) .cse1 (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~s~0 1) (<= 1 (div (+ ULTIMATE.start_main_~a~0 (* (- 1) ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~b~0)) ULTIMATE.start_main_~p~0)) .cse2 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)))) [2021-08-26 04:47:36,612 INFO L857 garLoopResultBuilder]: For program point L8-2(line 8) no Hoare annotation was computed. [2021-08-26 04:47:36,612 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-26 04:47:36,612 INFO L857 garLoopResultBuilder]: For program point L33-2(lines 33 50) no Hoare annotation was computed. [2021-08-26 04:47:36,612 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-26 04:47:36,614 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 04:47:36,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 04:47:36 BoogieIcfgContainer [2021-08-26 04:47:36,627 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 04:47:36,628 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 04:47:36,628 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 04:47:36,628 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 04:47:36,628 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 04:46:25" (3/4) ... [2021-08-26 04:47:36,630 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-26 04:47:36,637 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-08-26 04:47:36,637 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-26 04:47:36,637 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 04:47:36,637 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 04:47:36,664 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 04:47:36,664 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 04:47:36,664 INFO L168 Benchmark]: Toolchain (without parser) took 71650.79 ms. Allocated memory was 54.5 MB in the beginning and 708.8 MB in the end (delta: 654.3 MB). Free memory was 33.0 MB in the beginning and 596.0 MB in the end (delta: -563.1 MB). Peak memory consumption was 90.1 MB. Max. memory is 16.1 GB. [2021-08-26 04:47:36,665 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 54.5 MB. Free memory was 36.4 MB in the beginning and 36.4 MB in the end (delta: 44.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 04:47:36,665 INFO L168 Benchmark]: CACSL2BoogieTranslator took 211.09 ms. Allocated memory is still 54.5 MB. Free memory was 32.7 MB in the beginning and 37.7 MB in the end (delta: -4.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-26 04:47:36,665 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.04 ms. Allocated memory is still 54.5 MB. Free memory was 37.7 MB in the beginning and 36.0 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 04:47:36,665 INFO L168 Benchmark]: Boogie Preprocessor took 31.11 ms. Allocated memory is still 54.5 MB. Free memory was 36.0 MB in the beginning and 34.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 04:47:36,666 INFO L168 Benchmark]: RCFGBuilder took 289.28 ms. Allocated memory was 54.5 MB in the beginning and 69.2 MB in the end (delta: 14.7 MB). Free memory was 34.8 MB in the beginning and 46.1 MB in the end (delta: -11.3 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. [2021-08-26 04:47:36,666 INFO L168 Benchmark]: TraceAbstraction took 71047.06 ms. Allocated memory was 69.2 MB in the beginning and 708.8 MB in the end (delta: 639.6 MB). Free memory was 45.6 MB in the beginning and 599.2 MB in the end (delta: -553.5 MB). Peak memory consumption was 437.9 MB. Max. memory is 16.1 GB. [2021-08-26 04:47:36,666 INFO L168 Benchmark]: Witness Printer took 36.05 ms. Allocated memory is still 708.8 MB. Free memory was 599.2 MB in the beginning and 596.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 04:47:36,667 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 54.5 MB. Free memory was 36.4 MB in the beginning and 36.4 MB in the end (delta: 44.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 211.09 ms. Allocated memory is still 54.5 MB. Free memory was 32.7 MB in the beginning and 37.7 MB in the end (delta: -4.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 30.04 ms. Allocated memory is still 54.5 MB. Free memory was 37.7 MB in the beginning and 36.0 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.11 ms. Allocated memory is still 54.5 MB. Free memory was 36.0 MB in the beginning and 34.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 289.28 ms. Allocated memory was 54.5 MB in the beginning and 69.2 MB in the end (delta: 14.7 MB). Free memory was 34.8 MB in the beginning and 46.1 MB in the end (delta: -11.3 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 71047.06 ms. Allocated memory was 69.2 MB in the beginning and 708.8 MB in the end (delta: 639.6 MB). Free memory was 45.6 MB in the beginning and 599.2 MB in the end (delta: -553.5 MB). Peak memory consumption was 437.9 MB. Max. memory is 16.1 GB. * Witness Printer took 36.05 ms. Allocated memory is still 708.8 MB. Free memory was 599.2 MB in the beginning and 596.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 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 - 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, 40 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 70999.0ms, OverallIterations: 31, TraceHistogramMax: 5, EmptinessCheckTime: 19.6ms, AutomataDifference: 10023.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 29518.8ms, InitialAbstractionConstructionTime: 6.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 929 SDtfs, 1118 SDslu, 2820 SDs, 0 SdLazy, 4241 SolverSat, 328 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7054.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 955 GetRequests, 691 SyntacticMatches, 3 SemanticMatches, 261 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 3348.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=142occurred in iteration=23, InterpolantAutomatonStates: 259, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 301.0ms AutomataMinimizationTime, 31 MinimizatonAttempts, 566 StatesRemovedByMinimization, 28 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 93 NumberOfFragments, 404 HoareAnnotationTreeSize, 9 FomulaSimplifications, 1997702 FormulaSimplificationTreeSizeReduction, 779.9ms HoareSimplificationTime, 9 FomulaSimplificationsInter, 360544 FormulaSimplificationTreeSizeReductionInter, 28730.4ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 196.4ms SsaConstructionTime, 1192.3ms SatisfiabilityAnalysisTime, 10189.8ms InterpolantComputationTime, 885 NumberOfCodeBlocks, 809 NumberOfCodeBlocksAsserted, 59 NumberOfCheckSat, 854 ConstructedInterpolants, 2 QuantifiedInterpolants, 11243 SizeOfPredicates, 236 NumberOfNonLiveVariables, 3475 ConjunctsInSsa, 706 ConjunctsInUnsatCore, 31 InterpolantComputations, 6 PerfectInterpolantSequences, 177/788 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((s * y + q * x == b && cond == 1) && 1 <= y) && 1 <= x) && b == a) && b == r * y + p * x) || ((((((cond == 1 && 1 == cond) && 1 <= y) && q == 0) && s == 1) && 1 <= x) && b == y) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((s * y + q * x == b && cond == 1) && q * r + 1 == p * s) && 1 == cond) && 1 <= y) && 1 <= x) && a == r * y + p * x - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: (((((s * y + q * x == b && cond == 1) && q * r + 1 == p * s) && 1 == cond) && 1 <= y) && 1 <= x) && a == r * y + p * x - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((((((s * y + q * x == b && cond == 1) && q * r + 1 == p * s) && 1 == cond) && 1 <= y) && 1 <= x) && b == a) && b == r * y + p * x - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((((((((((cond == 1 && a == x) && p == 1) && 1 == cond) && 1 <= y) && q == 0) && r == 0) && s == 1) && 1 <= x) && b == y) || ((((((((cond == 1 && p == 1) && 1 == cond) && 1 <= y) && q == 0) && s == 1) && 1 <= x) && b == a) && b == y)) || (((((((s * y + q * x == b && cond == 1) && q * r + 1 == p * s) && 1 == cond) && 1 <= y) && 1 <= x) && b == a) && b == r * y + p * x) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((s * y + q * x == b && cond == 1) && q * r + 1 == p * s) && 1 == cond) && 1 <= y) && 1 <= x) && a == r * y + p * x - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: ((((((s * y + q * x == b && cond == 1) && q * r + 1 == p * s) && 1 == cond) && 1 <= y) && 1 <= x) && a == r * y + p * x) || ((((((((cond == 1 && p == 1) && 1 <= y) && q == 0) && r == 0) && s == 1) && 1 <= (a + -1 * r * b) / p) && a == r * y + p * x) && b == y) RESULT: Ultimate proved your program to be correct! [2021-08-26 04:47:36,710 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...