./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound1.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 eb7563327d648a3c438694ce52b023a250f6c4ef ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 13:16:15,322 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 13:16:15,324 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 13:16:15,371 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 13:16:15,372 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 13:16:15,375 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 13:16:15,376 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 13:16:15,380 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 13:16:15,382 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 13:16:15,387 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 13:16:15,388 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 13:16:15,392 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 13:16:15,392 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 13:16:15,393 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 13:16:15,395 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 13:16:15,396 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 13:16:15,399 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 13:16:15,399 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 13:16:15,400 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 13:16:15,403 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 13:16:15,406 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 13:16:15,407 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 13:16:15,407 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 13:16:15,409 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 13:16:15,410 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 13:16:15,411 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 13:16:15,412 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 13:16:15,412 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 13:16:15,413 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 13:16:15,414 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 13:16:15,414 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 13:16:15,415 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 13:16:15,416 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 13:16:15,418 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 13:16:15,419 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 13:16:15,420 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 13:16:15,420 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 13:16:15,420 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 13:16:15,421 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 13:16:15,422 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 13:16:15,422 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 13:16:15,423 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 13:16:15,454 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 13:16:15,455 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 13:16:15,455 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 13:16:15,456 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 13:16:15,457 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 13:16:15,457 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 13:16:15,457 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 13:16:15,457 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 13:16:15,458 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 13:16:15,458 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 13:16:15,458 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 13:16:15,459 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 13:16:15,459 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 13:16:15,459 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 13:16:15,459 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 13:16:15,459 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 13:16:15,459 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 13:16:15,459 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 13:16:15,460 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 13:16:15,460 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 13:16:15,460 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 13:16:15,460 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 13:16:15,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 13:16:15,460 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 13:16:15,460 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 13:16:15,461 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 13:16:15,461 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 13:16:15,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 13:16:15,461 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 13:16:15,461 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 13:16:15,461 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb7563327d648a3c438694ce52b023a250f6c4ef [2021-08-29 13:16:15,719 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 13:16:15,731 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 13:16:15,733 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 13:16:15,734 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 13:16:15,734 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 13:16:15,735 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound1.c [2021-08-29 13:16:15,774 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d915dc00/9cfedae2179c42f6b0ee4cd45a7dd8c8/FLAGdc44ece7f [2021-08-29 13:16:16,191 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 13:16:16,191 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound1.c [2021-08-29 13:16:16,196 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d915dc00/9cfedae2179c42f6b0ee4cd45a7dd8c8/FLAGdc44ece7f [2021-08-29 13:16:16,213 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d915dc00/9cfedae2179c42f6b0ee4cd45a7dd8c8 [2021-08-29 13:16:16,215 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 13:16:16,216 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 13:16:16,217 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 13:16:16,217 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 13:16:16,220 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 13:16:16,220 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 01:16:16" (1/1) ... [2021-08-29 13:16:16,221 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14ab49e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:16:16, skipping insertion in model container [2021-08-29 13:16:16,221 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 01:16:16" (1/1) ... [2021-08-29 13:16:16,225 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 13:16:16,234 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 13:16:16,309 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound1.c[546,559] [2021-08-29 13:16:16,318 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 13:16:16,323 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 13:16:16,330 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound1.c[546,559] [2021-08-29 13:16:16,335 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 13:16:16,356 INFO L208 MainTranslator]: Completed translation [2021-08-29 13:16:16,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:16:16 WrapperNode [2021-08-29 13:16:16,369 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 13:16:16,372 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 13:16:16,372 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 13:16:16,372 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 13:16:16,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:16:16" (1/1) ... [2021-08-29 13:16:16,398 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:16:16" (1/1) ... [2021-08-29 13:16:16,442 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 13:16:16,443 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 13:16:16,443 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 13:16:16,443 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 13:16:16,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:16:16" (1/1) ... [2021-08-29 13:16:16,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:16:16" (1/1) ... [2021-08-29 13:16:16,451 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:16:16" (1/1) ... [2021-08-29 13:16:16,464 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:16:16" (1/1) ... [2021-08-29 13:16:16,477 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:16:16" (1/1) ... [2021-08-29 13:16:16,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:16:16" (1/1) ... [2021-08-29 13:16:16,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:16:16" (1/1) ... [2021-08-29 13:16:16,489 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 13:16:16,491 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 13:16:16,492 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 13:16:16,492 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 13:16:16,493 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:16:16" (1/1) ... [2021-08-29 13:16:16,497 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 13:16:16,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 13:16:16,518 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-29 13:16:16,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-29 13:16:16,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 13:16:16,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 13:16:16,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 13:16:16,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 13:16:16,550 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_int [2021-08-29 13:16:16,649 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 13:16:16,650 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-08-29 13:16:16,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 01:16:16 BoogieIcfgContainer [2021-08-29 13:16:16,651 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 13:16:16,652 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 13:16:16,652 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 13:16:16,654 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 13:16:16,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 01:16:16" (1/3) ... [2021-08-29 13:16:16,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3708937 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 01:16:16, skipping insertion in model container [2021-08-29 13:16:16,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:16:16" (2/3) ... [2021-08-29 13:16:16,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3708937 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 01:16:16, skipping insertion in model container [2021-08-29 13:16:16,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 01:16:16" (3/3) ... [2021-08-29 13:16:16,656 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-ll_unwindbound1.c [2021-08-29 13:16:16,659 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 13:16:16,659 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-08-29 13:16:16,688 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 13:16:16,693 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-29 13:16:16,693 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-08-29 13:16:16,702 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 33 states have (on average 1.6666666666666667) internal successors, (55), 40 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:16:16,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-29 13:16:16,705 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 13:16:16,706 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 13:16:16,706 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)] === [2021-08-29 13:16:16,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 13:16:16,724 INFO L82 PathProgramCache]: Analyzing trace with hash 119446382, now seen corresponding path program 1 times [2021-08-29 13:16:16,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 13:16:16,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561138715] [2021-08-29 13:16:16,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:16:16,732 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 13:16:16,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 13:16:16,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 13:16:16,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 13:16:16,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561138715] [2021-08-29 13:16:16,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561138715] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 13:16:16,840 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 13:16:16,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 13:16:16,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050772641] [2021-08-29 13:16:16,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 13:16:16,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 13:16:16,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 13:16:16,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 13:16:16,863 INFO L87 Difference]: Start difference. First operand has 41 states, 33 states have (on average 1.6666666666666667) internal successors, (55), 40 states have internal predecessors, (55), 0 states have call successors, (0), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:16:16,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 13:16:16,925 INFO L93 Difference]: Finished difference Result 79 states and 106 transitions. [2021-08-29 13:16:16,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 13:16:16,927 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2021-08-29 13:16:16,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 13:16:16,933 INFO L225 Difference]: With dead ends: 79 [2021-08-29 13:16:16,933 INFO L226 Difference]: Without dead ends: 37 [2021-08-29 13:16:16,935 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 13:16:16,937 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.31ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.27ms IncrementalHoareTripleChecker+Time [2021-08-29 13:16:16,938 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 45 Unknown, 0 Unchecked, 0.31ms Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 48.27ms Time] [2021-08-29 13:16:16,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-08-29 13:16:16,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-08-29 13:16:16,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 36 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:16:16,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2021-08-29 13:16:16,959 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 8 [2021-08-29 13:16:16,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 13:16:16,959 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2021-08-29 13:16:16,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:16:16,960 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2021-08-29 13:16:16,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-29 13:16:16,960 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 13:16:16,960 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 13:16:16,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 13:16:16,961 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)] === [2021-08-29 13:16:16,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 13:16:16,962 INFO L82 PathProgramCache]: Analyzing trace with hash 176704684, now seen corresponding path program 1 times [2021-08-29 13:16:16,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 13:16:16,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890120364] [2021-08-29 13:16:16,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:16:16,963 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 13:16:16,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 13:16:17,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 13:16:17,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 13:16:17,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890120364] [2021-08-29 13:16:17,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890120364] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 13:16:17,010 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 13:16:17,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 13:16:17,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339908921] [2021-08-29 13:16:17,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 13:16:17,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 13:16:17,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 13:16:17,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 13:16:17,013 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:16:17,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 13:16:17,107 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2021-08-29 13:16:17,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 13:16:17,107 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2021-08-29 13:16:17,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 13:16:17,108 INFO L225 Difference]: With dead ends: 61 [2021-08-29 13:16:17,108 INFO L226 Difference]: Without dead ends: 59 [2021-08-29 13:16:17,109 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.66ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 13:16:17,110 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 49 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.26ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 76.39ms IncrementalHoareTripleChecker+Time [2021-08-29 13:16:17,110 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 0 Invalid, 107 Unknown, 0 Unchecked, 1.26ms Time], IncrementalHoareTripleChecker [9 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 76.39ms Time] [2021-08-29 13:16:17,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-08-29 13:16:17,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 35. [2021-08-29 13:16:17,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 34 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:16:17,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2021-08-29 13:16:17,116 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 8 [2021-08-29 13:16:17,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 13:16:17,116 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2021-08-29 13:16:17,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:16:17,117 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2021-08-29 13:16:17,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-29 13:16:17,118 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 13:16:17,118 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 13:16:17,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-29 13:16:17,119 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-29 13:16:17,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 13:16:17,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1986071569, now seen corresponding path program 1 times [2021-08-29 13:16:17,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 13:16:17,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811593602] [2021-08-29 13:16:17,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:16:17,121 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 13:16:17,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 13:16:17,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 13:16:17,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 13:16:17,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811593602] [2021-08-29 13:16:17,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811593602] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 13:16:17,185 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 13:16:17,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 13:16:17,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063639676] [2021-08-29 13:16:17,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 13:16:17,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 13:16:17,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 13:16:17,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 13:16:17,192 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:16:17,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 13:16:17,291 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2021-08-29 13:16:17,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 13:16:17,291 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2021-08-29 13:16:17,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 13:16:17,292 INFO L225 Difference]: With dead ends: 56 [2021-08-29 13:16:17,296 INFO L226 Difference]: Without dead ends: 37 [2021-08-29 13:16:17,296 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.11ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 13:16:17,297 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 70.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.95ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 85.62ms IncrementalHoareTripleChecker+Time [2021-08-29 13:16:17,298 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 113 Unknown, 0 Unchecked, 0.95ms Time], IncrementalHoareTripleChecker [0 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 85.62ms Time] [2021-08-29 13:16:17,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-08-29 13:16:17,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-08-29 13:16:17,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 36 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:16:17,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2021-08-29 13:16:17,304 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 10 [2021-08-29 13:16:17,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 13:16:17,305 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2021-08-29 13:16:17,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:16:17,305 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2021-08-29 13:16:17,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-29 13:16:17,306 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 13:16:17,306 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 13:16:17,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-29 13:16:17,307 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-29 13:16:17,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 13:16:17,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1985334737, now seen corresponding path program 1 times [2021-08-29 13:16:17,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 13:16:17,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745300898] [2021-08-29 13:16:17,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:16:17,308 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 13:16:17,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 13:16:17,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 13:16:17,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 13:16:17,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745300898] [2021-08-29 13:16:17,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745300898] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 13:16:17,374 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 13:16:17,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 13:16:17,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190034075] [2021-08-29 13:16:17,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 13:16:17,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 13:16:17,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 13:16:17,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 13:16:17,376 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:16:17,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 13:16:17,470 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2021-08-29 13:16:17,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 13:16:17,471 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2021-08-29 13:16:17,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 13:16:17,472 INFO L225 Difference]: With dead ends: 56 [2021-08-29 13:16:17,472 INFO L226 Difference]: Without dead ends: 54 [2021-08-29 13:16:17,473 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.91ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 13:16:17,481 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 42 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.56ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 67.79ms IncrementalHoareTripleChecker+Time [2021-08-29 13:16:17,482 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 0 Invalid, 97 Unknown, 0 Unchecked, 2.56ms Time], IncrementalHoareTripleChecker [12 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 67.79ms Time] [2021-08-29 13:16:17,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-08-29 13:16:17,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 35. [2021-08-29 13:16:17,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.3) internal successors, (39), 34 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:16:17,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2021-08-29 13:16:17,494 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 10 [2021-08-29 13:16:17,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 13:16:17,495 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2021-08-29 13:16:17,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:16:17,495 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2021-08-29 13:16:17,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-29 13:16:17,496 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 13:16:17,496 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 13:16:17,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-29 13:16:17,497 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-29 13:16:17,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 13:16:17,500 INFO L82 PathProgramCache]: Analyzing trace with hash -941046702, now seen corresponding path program 1 times [2021-08-29 13:16:17,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 13:16:17,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237563307] [2021-08-29 13:16:17,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:16:17,502 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 13:16:17,512 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 13:16:17,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [647594879] [2021-08-29 13:16:17,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:16:17,517 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 13:16:17,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 13:16:17,518 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 13:16:17,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-29 13:16:17,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 13:16:17,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-29 13:16:17,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 13:16:17,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 13:16:17,698 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 13:16:17,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 13:16:17,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237563307] [2021-08-29 13:16:17,698 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 13:16:17,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647594879] [2021-08-29 13:16:17,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647594879] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 13:16:17,699 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 13:16:17,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-29 13:16:17,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448676880] [2021-08-29 13:16:17,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-29 13:16:17,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 13:16:17,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-29 13:16:17,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-29 13:16:17,700 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:16:17,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 13:16:17,864 INFO L93 Difference]: Finished difference Result 81 states and 93 transitions. [2021-08-29 13:16:17,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-29 13:16:17,865 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-08-29 13:16:17,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 13:16:17,865 INFO L225 Difference]: With dead ends: 81 [2021-08-29 13:16:17,866 INFO L226 Difference]: Without dead ends: 58 [2021-08-29 13:16:17,866 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 91.26ms TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-08-29 13:16:17,867 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 146 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.50ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 82.56ms IncrementalHoareTripleChecker+Time [2021-08-29 13:16:17,867 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 0 Invalid, 130 Unknown, 0 Unchecked, 1.50ms Time], IncrementalHoareTripleChecker [16 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 82.56ms Time] [2021-08-29 13:16:17,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-08-29 13:16:17,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 49. [2021-08-29 13:16:17,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 44 states have (on average 1.2727272727272727) internal successors, (56), 48 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) [2021-08-29 13:16:17,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2021-08-29 13:16:17,872 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 12 [2021-08-29 13:16:17,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 13:16:17,872 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2021-08-29 13:16:17,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:16:17,872 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2021-08-29 13:16:17,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-29 13:16:17,873 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 13:16:17,873 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 13:16:17,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-29 13:16:18,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 13:16:18,089 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-29 13:16:18,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 13:16:18,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1803611644, now seen corresponding path program 1 times [2021-08-29 13:16:18,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 13:16:18,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182343670] [2021-08-29 13:16:18,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:16:18,090 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 13:16:18,104 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 13:16:18,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [211624397] [2021-08-29 13:16:18,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:16:18,117 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 13:16:18,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 13:16:18,133 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 13:16:18,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-29 13:16:18,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 13:16:18,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-29 13:16:18,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 13:16:18,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 13:16:18,237 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 13:16:18,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 13:16:18,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182343670] [2021-08-29 13:16:18,238 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 13:16:18,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211624397] [2021-08-29 13:16:18,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211624397] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 13:16:18,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 13:16:18,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 13:16:18,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381763191] [2021-08-29 13:16:18,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 13:16:18,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 13:16:18,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 13:16:18,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-29 13:16:18,239 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand has 5 states, 5 states have (on average 3.2) 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) [2021-08-29 13:16:18,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 13:16:18,272 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2021-08-29 13:16:18,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 13:16:18,272 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) 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 [2021-08-29 13:16:18,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 13:16:18,273 INFO L225 Difference]: With dead ends: 61 [2021-08-29 13:16:18,273 INFO L226 Difference]: Without dead ends: 36 [2021-08-29 13:16:18,273 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 8.25ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-08-29 13:16:18,273 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 18 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.27ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.84ms IncrementalHoareTripleChecker+Time [2021-08-29 13:16:18,274 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 0 Invalid, 58 Unknown, 0 Unchecked, 0.27ms Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 25.84ms Time] [2021-08-29 13:16:18,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-08-29 13:16:18,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-08-29 13:16:18,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 35 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:16:18,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2021-08-29 13:16:18,277 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 16 [2021-08-29 13:16:18,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 13:16:18,277 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2021-08-29 13:16:18,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) 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) [2021-08-29 13:16:18,277 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2021-08-29 13:16:18,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-29 13:16:18,278 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 13:16:18,278 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 13:16:18,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-29 13:16:18,494 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,SelfDestructingSolverStorable5 [2021-08-29 13:16:18,494 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-29 13:16:18,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 13:16:18,495 INFO L82 PathProgramCache]: Analyzing trace with hash 77359410, now seen corresponding path program 1 times [2021-08-29 13:16:18,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 13:16:18,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223714187] [2021-08-29 13:16:18,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:16:18,496 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 13:16:18,502 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 13:16:18,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1352343509] [2021-08-29 13:16:18,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:16:18,503 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 13:16:18,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 13:16:18,517 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 13:16:18,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-29 13:16:18,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 13:16:18,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-29 13:16:18,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 13:16:18,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 13:16:18,620 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 13:16:18,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 13:16:18,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223714187] [2021-08-29 13:16:18,620 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 13:16:18,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352343509] [2021-08-29 13:16:18,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352343509] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 13:16:18,621 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 13:16:18,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 13:16:18,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016307668] [2021-08-29 13:16:18,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 13:16:18,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 13:16:18,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 13:16:18,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 13:16:18,622 INFO L87 Difference]: Start difference. First operand 36 states and 38 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) [2021-08-29 13:16:18,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 13:16:18,655 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2021-08-29 13:16:18,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 13:16:18,655 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 [2021-08-29 13:16:18,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 13:16:18,655 INFO L225 Difference]: With dead ends: 36 [2021-08-29 13:16:18,656 INFO L226 Difference]: Without dead ends: 30 [2021-08-29 13:16:18,656 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.96ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 13:16:18,656 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 12 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.19ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.46ms IncrementalHoareTripleChecker+Time [2021-08-29 13:16:18,657 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 0 Invalid, 45 Unknown, 0 Unchecked, 0.19ms Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 24.46ms Time] [2021-08-29 13:16:18,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-08-29 13:16:18,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-08-29 13:16:18,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 29 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:16:18,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2021-08-29 13:16:18,660 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 17 [2021-08-29 13:16:18,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 13:16:18,660 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2021-08-29 13:16:18,660 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) [2021-08-29 13:16:18,660 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2021-08-29 13:16:18,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-29 13:16:18,660 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 13:16:18,661 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 13:16:18,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-29 13:16:18,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 13:16:18,896 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-29 13:16:18,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 13:16:18,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1642186908, now seen corresponding path program 1 times [2021-08-29 13:16:18,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 13:16:18,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945346389] [2021-08-29 13:16:18,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:16:18,897 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 13:16:18,912 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 13:16:18,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [272953776] [2021-08-29 13:16:18,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:16:18,912 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 13:16:18,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 13:16:18,913 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 13:16:18,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-29 13:16:18,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 13:16:18,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-29 13:16:18,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 13:16:19,002 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 13:16:19,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 13:16:19,036 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 13:16:19,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 13:16:19,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945346389] [2021-08-29 13:16:19,037 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 13:16:19,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272953776] [2021-08-29 13:16:19,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272953776] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 13:16:19,037 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 13:16:19,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-08-29 13:16:19,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607904282] [2021-08-29 13:16:19,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 13:16:19,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 13:16:19,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 13:16:19,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-29 13:16:19,039 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:16:19,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 13:16:19,067 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2021-08-29 13:16:19,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 13:16:19,067 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-08-29 13:16:19,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 13:16:19,068 INFO L225 Difference]: With dead ends: 40 [2021-08-29 13:16:19,068 INFO L226 Difference]: Without dead ends: 22 [2021-08-29 13:16:19,068 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 8.90ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-08-29 13:16:19,068 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 13 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.21ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.88ms IncrementalHoareTripleChecker+Time [2021-08-29 13:16:19,069 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 0 Invalid, 48 Unknown, 0 Unchecked, 0.21ms Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 21.88ms Time] [2021-08-29 13:16:19,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-08-29 13:16:19,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-08-29 13:16:19,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.0) internal successors, (21), 21 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:16:19,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 21 transitions. [2021-08-29 13:16:19,071 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 21 transitions. Word has length 20 [2021-08-29 13:16:19,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 13:16:19,071 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 21 transitions. [2021-08-29 13:16:19,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:16:19,071 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 21 transitions. [2021-08-29 13:16:19,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-29 13:16:19,072 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 13:16:19,072 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 13:16:19,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-29 13:16:19,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 13:16:19,289 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-29 13:16:19,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 13:16:19,290 INFO L82 PathProgramCache]: Analyzing trace with hash 125341744, now seen corresponding path program 1 times [2021-08-29 13:16:19,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 13:16:19,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61371785] [2021-08-29 13:16:19,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:16:19,290 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 13:16:19,297 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 13:16:19,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [294507099] [2021-08-29 13:16:19,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:16:19,297 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 13:16:19,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 13:16:19,306 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 13:16:19,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-29 13:16:19,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 13:16:19,349 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-29 13:16:19,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 13:16:19,373 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-29 13:16:19,373 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-29 13:16:19,374 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2021-08-29 13:16:19,375 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2021-08-29 13:16:19,375 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2021-08-29 13:16:19,375 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2021-08-29 13:16:19,375 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2021-08-29 13:16:19,375 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2021-08-29 13:16:19,375 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2021-08-29 13:16:19,395 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-08-29 13:16:19,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 13:16:19,580 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 13:16:19,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 01:16:19 BoogieIcfgContainer [2021-08-29 13:16:19,599 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 13:16:19,600 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 13:16:19,600 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 13:16:19,600 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 13:16:19,600 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 01:16:16" (3/4) ... [2021-08-29 13:16:19,601 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-29 13:16:19,624 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 13:16:19,624 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 13:16:19,625 INFO L158 Benchmark]: Toolchain (without parser) took 3408.48ms. Allocated memory was 65.0MB in the beginning and 94.4MB in the end (delta: 29.4MB). Free memory was 45.8MB in the beginning and 49.2MB in the end (delta: -3.5MB). Peak memory consumption was 24.6MB. Max. memory is 16.1GB. [2021-08-29 13:16:19,625 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 65.0MB. Free memory was 47.3MB in the beginning and 47.2MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 13:16:19,625 INFO L158 Benchmark]: CACSL2BoogieTranslator took 152.33ms. Allocated memory is still 65.0MB. Free memory was 45.6MB in the beginning and 49.1MB in the end (delta: -3.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-08-29 13:16:19,625 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.10ms. Allocated memory is still 65.0MB. Free memory was 49.1MB in the beginning and 47.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 13:16:19,626 INFO L158 Benchmark]: Boogie Preprocessor took 47.47ms. Allocated memory is still 65.0MB. Free memory was 47.5MB in the beginning and 46.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 13:16:19,626 INFO L158 Benchmark]: RCFGBuilder took 159.92ms. Allocated memory is still 65.0MB. Free memory was 46.3MB in the beginning and 36.6MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-08-29 13:16:19,626 INFO L158 Benchmark]: TraceAbstraction took 2947.49ms. Allocated memory was 65.0MB in the beginning and 94.4MB in the end (delta: 29.4MB). Free memory was 36.1MB in the beginning and 51.8MB in the end (delta: -15.7MB). Peak memory consumption was 15.3MB. Max. memory is 16.1GB. [2021-08-29 13:16:19,626 INFO L158 Benchmark]: Witness Printer took 24.53ms. Allocated memory is still 94.4MB. Free memory was 51.8MB in the beginning and 49.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 13:16:19,627 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 65.0MB. Free memory was 47.3MB in the beginning and 47.2MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 152.33ms. Allocated memory is still 65.0MB. Free memory was 45.6MB in the beginning and 49.1MB in the end (delta: -3.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.10ms. Allocated memory is still 65.0MB. Free memory was 49.1MB in the beginning and 47.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 47.47ms. Allocated memory is still 65.0MB. Free memory was 47.5MB in the beginning and 46.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 159.92ms. Allocated memory is still 65.0MB. Free memory was 46.3MB in the beginning and 36.6MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2947.49ms. Allocated memory was 65.0MB in the beginning and 94.4MB in the end (delta: 29.4MB). Free memory was 36.1MB in the beginning and 51.8MB in the end (delta: -15.7MB). Peak memory consumption was 15.3MB. Max. memory is 16.1GB. * Witness Printer took 24.53ms. Allocated memory is still 94.4MB. Free memory was 51.8MB in the beginning and 49.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 17]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; VAL [counter=0] [L24] unsigned int A, B; [L25] long long r, d, p, q; [L26] A = __VERIFIER_nondet_unsigned_int() [L27] B = __VERIFIER_nondet_unsigned_int() [L12] COND FALSE !(!cond) VAL [counter=0] [L30] r = A [L31] d = B [L32] p = 1 [L33] q = 0 VAL [counter=0] [L35] EXPR counter++ VAL [counter=1] [L35] COND TRUE counter++<1 [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L39] COND FALSE !(!(r >= d)) [L41] d = 2 * d [L42] p = 2 * p VAL [counter=1] [L35] EXPR counter++ VAL [counter=2] [L35] COND FALSE !(counter++<1) [L45] EXPR counter++ VAL [counter=3] [L45] COND FALSE !(counter++<1) [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND TRUE !(cond) VAL [counter=3] [L17] reach_error() VAL [counter=3] - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 2892.59ms, OverallIterations: 9, TraceHistogramMax: 2, EmptinessCheckTime: 10.65ms, AutomataDifference: 683.64ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 6.57ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 280 SdHoareTripleChecker+Valid, 432.80ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 280 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 345.29ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 225 mSDsCounter, 45 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 598 IncrementalHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 45 mSolverCounterUnsat, 0 mSDtfsCounter, 598 mSolverCounterSat, 7.25ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 145.08ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=5, InterpolantAutomatonStates: 37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 45.34ms AutomataMinimizationTime, 8 MinimizatonAttempts, 52 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 40.37ms SsaConstructionTime, 116.56ms SatisfiabilityAnalysisTime, 488.40ms InterpolantComputationTime, 122 NumberOfCodeBlocks, 122 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 112 ConstructedInterpolants, 0 QuantifiedInterpolants, 434 SizeOfPredicates, 13 NumberOfNonLiveVariables, 319 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 9 InterpolantComputations, 7 PerfectInterpolantSequences, 12/14 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 RESULT: Ultimate proved your program to be incorrect! [2021-08-29 13:16:19,654 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...