./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_unwindbound2.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/fermat2-ll_unwindbound2.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 670ec06931b62e6d0dcbdb520cd3023beaa77254 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 12:57:24,016 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 12:57:24,018 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 12:57:24,050 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 12:57:24,050 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 12:57:24,053 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 12:57:24,054 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 12:57:24,059 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 12:57:24,064 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 12:57:24,068 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 12:57:24,069 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 12:57:24,072 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 12:57:24,073 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 12:57:24,074 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 12:57:24,076 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 12:57:24,079 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 12:57:24,079 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 12:57:24,082 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 12:57:24,083 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 12:57:24,084 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 12:57:24,087 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 12:57:24,088 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 12:57:24,089 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 12:57:24,090 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 12:57:24,093 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 12:57:24,093 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 12:57:24,094 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 12:57:24,095 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 12:57:24,095 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 12:57:24,096 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 12:57:24,096 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 12:57:24,096 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 12:57:24,097 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 12:57:24,098 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 12:57:24,099 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 12:57:24,099 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 12:57:24,100 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 12:57:24,100 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 12:57:24,100 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 12:57:24,101 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 12:57:24,101 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 12:57:24,104 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 12:57:24,130 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 12:57:24,130 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 12:57:24,131 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 12:57:24,131 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 12:57:24,133 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 12:57:24,133 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 12:57:24,133 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 12:57:24,133 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 12:57:24,133 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 12:57:24,133 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 12:57:24,134 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 12:57:24,134 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 12:57:24,134 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 12:57:24,134 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 12:57:24,135 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 12:57:24,135 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 12:57:24,135 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 12:57:24,135 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 12:57:24,135 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 12:57:24,135 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 12:57:24,136 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 12:57:24,136 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 12:57:24,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 12:57:24,136 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 12:57:24,136 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 12:57:24,136 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 12:57:24,137 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 12:57:24,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 12:57:24,137 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 12:57:24,137 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 12:57:24,137 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 670ec06931b62e6d0dcbdb520cd3023beaa77254 [2021-08-29 12:57:24,363 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 12:57:24,376 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 12:57:24,378 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 12:57:24,378 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 12:57:24,379 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 12:57:24,380 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_unwindbound2.c [2021-08-29 12:57:24,431 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cf4c1626/53fdc059e3a04aa6b6c049c8c3deadb9/FLAG7a9db86e1 [2021-08-29 12:57:24,735 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 12:57:24,735 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_unwindbound2.c [2021-08-29 12:57:24,740 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cf4c1626/53fdc059e3a04aa6b6c049c8c3deadb9/FLAG7a9db86e1 [2021-08-29 12:57:25,163 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cf4c1626/53fdc059e3a04aa6b6c049c8c3deadb9 [2021-08-29 12:57:25,165 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 12:57:25,177 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 12:57:25,178 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 12:57:25,178 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 12:57:25,181 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 12:57:25,181 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 12:57:25" (1/1) ... [2021-08-29 12:57:25,182 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bd0c8f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:57:25, skipping insertion in model container [2021-08-29 12:57:25,182 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 12:57:25" (1/1) ... [2021-08-29 12:57:25,187 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 12:57:25,197 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 12:57:25,297 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/fermat2-ll_unwindbound2.c[524,537] [2021-08-29 12:57:25,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 12:57:25,314 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 12:57:25,321 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/fermat2-ll_unwindbound2.c[524,537] [2021-08-29 12:57:25,325 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 12:57:25,332 INFO L208 MainTranslator]: Completed translation [2021-08-29 12:57:25,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:57:25 WrapperNode [2021-08-29 12:57:25,332 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 12:57:25,333 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 12:57:25,333 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 12:57:25,333 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 12:57:25,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:57:25" (1/1) ... [2021-08-29 12:57:25,341 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:57:25" (1/1) ... [2021-08-29 12:57:25,378 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 12:57:25,379 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 12:57:25,379 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 12:57:25,379 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 12:57:25,384 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:57:25" (1/1) ... [2021-08-29 12:57:25,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:57:25" (1/1) ... [2021-08-29 12:57:25,385 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:57:25" (1/1) ... [2021-08-29 12:57:25,385 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:57:25" (1/1) ... [2021-08-29 12:57:25,387 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:57:25" (1/1) ... [2021-08-29 12:57:25,389 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:57:25" (1/1) ... [2021-08-29 12:57:25,390 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:57:25" (1/1) ... [2021-08-29 12:57:25,391 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 12:57:25,391 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 12:57:25,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 12:57:25,392 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 12:57:25,392 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:57:25" (1/1) ... [2021-08-29 12:57:25,399 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 12:57:25,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:57:25,415 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-29 12:57:25,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-29 12:57:25,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 12:57:25,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 12:57:25,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 12:57:25,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 12:57:25,534 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 12:57:25,534 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-08-29 12:57:25,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 12:57:25 BoogieIcfgContainer [2021-08-29 12:57:25,535 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 12:57:25,536 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 12:57:25,537 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 12:57:25,538 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 12:57:25,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 12:57:25" (1/3) ... [2021-08-29 12:57:25,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62446ef1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 12:57:25, skipping insertion in model container [2021-08-29 12:57:25,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:57:25" (2/3) ... [2021-08-29 12:57:25,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62446ef1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 12:57:25, skipping insertion in model container [2021-08-29 12:57:25,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 12:57:25" (3/3) ... [2021-08-29 12:57:25,541 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat2-ll_unwindbound2.c [2021-08-29 12:57:25,544 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 12:57:25,544 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-08-29 12:57:25,571 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 12:57:25,576 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-29 12:57:25,576 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-29 12:57:25,584 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 20 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:57:25,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-29 12:57:25,587 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:57:25,588 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:57:25,588 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 12:57:25,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:57:25,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1235340721, now seen corresponding path program 1 times [2021-08-29 12:57:25,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:57:25,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152640912] [2021-08-29 12:57:25,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:57:25,598 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:57:25,653 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:57:25,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1677033624] [2021-08-29 12:57:25,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:57:25,654 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:57:25,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:57:25,663 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 12:57:25,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-29 12:57:25,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:57:25,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 1 conjunts are in the unsatisfiable core [2021-08-29 12:57:25,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:57:25,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:57:25,783 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 12:57:25,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:57:25,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152640912] [2021-08-29 12:57:25,784 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:57:25,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677033624] [2021-08-29 12:57:25,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677033624] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 12:57:25,784 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 12:57:25,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 12:57:25,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200550544] [2021-08-29 12:57:25,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 12:57:25,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:57:25,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 12:57:25,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 12:57:25,805 INFO L87 Difference]: Start difference. First operand has 21 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 20 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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 12:57:25,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:57:25,860 INFO L93 Difference]: Finished difference Result 39 states and 52 transitions. [2021-08-29 12:57:25,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 12:57:25,862 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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 12:57:25,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:57:25,867 INFO L225 Difference]: With dead ends: 39 [2021-08-29 12:57:25,867 INFO L226 Difference]: Without dead ends: 17 [2021-08-29 12:57:25,869 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 12:57:25,873 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.22ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.95ms IncrementalHoareTripleChecker+Time [2021-08-29 12:57:25,874 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 23 Unknown, 0 Unchecked, 0.22ms Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 42.95ms Time] [2021-08-29 12:57:25,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-08-29 12:57:25,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-08-29 12:57:25,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:57:25,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-08-29 12:57:25,897 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 10 [2021-08-29 12:57:25,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:57:25,897 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-08-29 12:57:25,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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 12:57:25,899 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-08-29 12:57:25,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-29 12:57:25,899 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:57:25,899 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:57:25,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-29 12:57:26,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-08-29 12:57:26,105 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 12:57:26,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:57:26,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1988288018, now seen corresponding path program 1 times [2021-08-29 12:57:26,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:57:26,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219432710] [2021-08-29 12:57:26,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:57:26,106 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:57:26,120 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:57:26,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [517779505] [2021-08-29 12:57:26,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:57:26,122 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:57:26,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:57:26,124 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 12:57:26,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-29 12:57:26,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:57:26,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-29 12:57:26,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:57:26,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:57:26,357 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 12:57:26,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:57:26,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219432710] [2021-08-29 12:57:26,357 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:57:26,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517779505] [2021-08-29 12:57:26,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517779505] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 12:57:26,358 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 12:57:26,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 12:57:26,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736569736] [2021-08-29 12:57:26,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 12:57:26,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:57:26,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 12:57:26,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 12:57:26,363 INFO L87 Difference]: Start difference. First operand 17 states and 19 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 12:57:28,638 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:57:28,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:57:28,657 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2021-08-29 12:57:28,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 12:57:28,658 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 12:57:28,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:57:28,658 INFO L225 Difference]: With dead ends: 32 [2021-08-29 12:57:28,658 INFO L226 Difference]: Without dead ends: 30 [2021-08-29 12:57:28,659 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.02ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 12:57:28,659 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 13 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2241.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.58ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2251.90ms IncrementalHoareTripleChecker+Time [2021-08-29 12:57:28,660 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 0 Invalid, 64 Unknown, 0 Unchecked, 1.58ms Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 1 Unknown, 0 Unchecked, 2251.90ms Time] [2021-08-29 12:57:28,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-08-29 12:57:28,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 20. [2021-08-29 12:57:28,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:57:28,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-08-29 12:57:28,663 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 10 [2021-08-29 12:57:28,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:57:28,663 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-08-29 12:57:28,663 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 12:57:28,663 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-08-29 12:57:28,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-29 12:57:28,664 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:57:28,664 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:57:28,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-29 12:57:28,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-08-29 12:57:28,869 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 12:57:28,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:57:28,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1507424085, now seen corresponding path program 1 times [2021-08-29 12:57:28,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:57:28,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651629429] [2021-08-29 12:57:28,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:57:28,870 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:57:28,875 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:57:28,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [17396686] [2021-08-29 12:57:28,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:57:28,876 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:57:28,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:57:28,876 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 12:57:28,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-29 12:57:28,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:57:28,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-29 12:57:28,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:57:28,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:57:28,952 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 12:57:28,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:57:28,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651629429] [2021-08-29 12:57:28,952 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:57:28,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17396686] [2021-08-29 12:57:28,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17396686] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 12:57:28,953 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 12:57:28,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 12:57:28,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708914870] [2021-08-29 12:57:28,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 12:57:28,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:57:28,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 12:57:28,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 12:57:28,954 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:57:28,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:57:28,998 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2021-08-29 12:57:28,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 12:57:28,998 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-08-29 12:57:28,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:57:28,999 INFO L225 Difference]: With dead ends: 24 [2021-08-29 12:57:28,999 INFO L226 Difference]: Without dead ends: 20 [2021-08-29 12:57:29,000 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.44ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 12:57:29,000 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.75ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.19ms IncrementalHoareTripleChecker+Time [2021-08-29 12:57:29,001 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 51 Unknown, 0 Unchecked, 0.75ms Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 38.19ms Time] [2021-08-29 12:57:29,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-08-29 12:57:29,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-08-29 12:57:29,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:57:29,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2021-08-29 12:57:29,008 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 11 [2021-08-29 12:57:29,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:57:29,009 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-08-29 12:57:29,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:57:29,009 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2021-08-29 12:57:29,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-29 12:57:29,010 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:57:29,010 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:57:29,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-29 12:57:29,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:57:29,229 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 12:57:29,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:57:29,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1189458428, now seen corresponding path program 1 times [2021-08-29 12:57:29,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:57:29,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875279343] [2021-08-29 12:57:29,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:57:29,229 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:57:29,235 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:57:29,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1966268621] [2021-08-29 12:57:29,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:57:29,235 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:57:29,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:57:29,241 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 12:57:29,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-29 12:57:29,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:57:29,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-29 12:57:29,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:57:29,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:57:29,366 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 12:57:29,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:57:29,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875279343] [2021-08-29 12:57:29,366 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:57:29,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966268621] [2021-08-29 12:57:29,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966268621] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 12:57:29,367 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 12:57:29,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-29 12:57:29,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021989294] [2021-08-29 12:57:29,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-29 12:57:29,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:57:29,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-29 12:57:29,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-29 12:57:29,369 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:57:29,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:57:29,493 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2021-08-29 12:57:29,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 12:57:29,493 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-08-29 12:57:29,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:57:29,494 INFO L225 Difference]: With dead ends: 24 [2021-08-29 12:57:29,494 INFO L226 Difference]: Without dead ends: 18 [2021-08-29 12:57:29,494 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.11ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-08-29 12:57:29,495 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 17 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 77.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.62ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 87.45ms IncrementalHoareTripleChecker+Time [2021-08-29 12:57:29,495 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 0 Invalid, 75 Unknown, 0 Unchecked, 0.62ms Time], IncrementalHoareTripleChecker [13 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 87.45ms Time] [2021-08-29 12:57:29,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-08-29 12:57:29,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2021-08-29 12:57:29,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:57:29,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-08-29 12:57:29,497 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2021-08-29 12:57:29,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:57:29,497 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-08-29 12:57:29,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:57:29,497 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-08-29 12:57:29,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-29 12:57:29,498 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:57:29,498 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:57:29,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-29 12:57:29,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:57:29,709 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 12:57:29,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:57:29,709 INFO L82 PathProgramCache]: Analyzing trace with hash -132612007, now seen corresponding path program 1 times [2021-08-29 12:57:29,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:57:29,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719810664] [2021-08-29 12:57:29,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:57:29,710 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:57:29,715 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:57:29,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [603343511] [2021-08-29 12:57:29,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:57:29,715 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:57:29,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:57:29,716 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 12:57:29,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-29 12:57:29,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:57:29,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-29 12:57:29,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:57:29,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:57:29,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 12:57:29,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:57:29,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:57:29,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719810664] [2021-08-29 12:57:29,826 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:57:29,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603343511] [2021-08-29 12:57:29,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603343511] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 12:57:29,826 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 12:57:29,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-08-29 12:57:29,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868893330] [2021-08-29 12:57:29,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 12:57:29,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:57:29,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 12:57:29,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-29 12:57:29,827 INFO L87 Difference]: Start difference. First operand 17 states and 18 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 12:57:29,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:57:29,873 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2021-08-29 12:57:29,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 12:57:29,873 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 12:57:29,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:57:29,873 INFO L225 Difference]: With dead ends: 26 [2021-08-29 12:57:29,874 INFO L226 Difference]: Without dead ends: 22 [2021-08-29 12:57:29,874 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 11.41ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-29 12:57:29,874 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 6 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.40ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.53ms IncrementalHoareTripleChecker+Time [2021-08-29 12:57:29,875 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 0 Invalid, 53 Unknown, 0 Unchecked, 0.40ms Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 37.53ms Time] [2021-08-29 12:57:29,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-08-29 12:57:29,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-08-29 12:57:29,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:57:29,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2021-08-29 12:57:29,877 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 16 [2021-08-29 12:57:29,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:57:29,877 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2021-08-29 12:57:29,877 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 12:57:29,878 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2021-08-29 12:57:29,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-29 12:57:29,878 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:57:29,878 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:57:29,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-29 12:57:30,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:57:30,092 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 12:57:30,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:57:30,093 INFO L82 PathProgramCache]: Analyzing trace with hash -625728149, now seen corresponding path program 2 times [2021-08-29 12:57:30,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:57:30,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057935912] [2021-08-29 12:57:30,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:57:30,093 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:57:30,111 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:57:30,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [830465807] [2021-08-29 12:57:30,111 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-29 12:57:30,111 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:57:30,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:57:30,112 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 12:57:30,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-08-29 12:57:30,174 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-29 12:57:30,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-08-29 12:57:30,175 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-29 12:57:30,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 12:57:30,201 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-29 12:57:30,201 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-29 12:57:30,202 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-08-29 12:57:30,203 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-08-29 12:57:30,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-08-29 12:57:30,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:57:30,412 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 12:57:30,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 12:57:30 BoogieIcfgContainer [2021-08-29 12:57:30,435 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 12:57:30,435 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 12:57:30,435 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 12:57:30,435 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 12:57:30,435 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 12:57:25" (3/4) ... [2021-08-29 12:57:30,437 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-29 12:57:30,475 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 12:57:30,475 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 12:57:30,475 INFO L158 Benchmark]: Toolchain (without parser) took 5309.78ms. Allocated memory was 52.4MB in the beginning and 67.1MB in the end (delta: 14.7MB). Free memory was 29.3MB in the beginning and 44.0MB in the end (delta: -14.7MB). Peak memory consumption was 1.7MB. Max. memory is 16.1GB. [2021-08-29 12:57:30,475 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 52.4MB. Free memory was 32.9MB in the beginning and 32.9MB in the end (delta: 33.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 12:57:30,476 INFO L158 Benchmark]: CACSL2BoogieTranslator took 154.15ms. Allocated memory is still 52.4MB. Free memory was 29.1MB in the beginning and 30.9MB in the end (delta: -1.8MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. [2021-08-29 12:57:30,476 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.21ms. Allocated memory was 52.4MB in the beginning and 67.1MB in the end (delta: 14.7MB). Free memory was 30.8MB in the beginning and 50.3MB in the end (delta: -19.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-29 12:57:30,476 INFO L158 Benchmark]: Boogie Preprocessor took 12.40ms. Allocated memory is still 67.1MB. Free memory was 50.3MB in the beginning and 49.3MB in the end (delta: 941.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 12:57:30,476 INFO L158 Benchmark]: RCFGBuilder took 143.92ms. Allocated memory is still 67.1MB. Free memory was 49.3MB in the beginning and 40.4MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-29 12:57:30,477 INFO L158 Benchmark]: TraceAbstraction took 4898.34ms. Allocated memory is still 67.1MB. Free memory was 39.9MB in the beginning and 46.5MB in the end (delta: -6.6MB). Peak memory consumption was 19.5MB. Max. memory is 16.1GB. [2021-08-29 12:57:30,477 INFO L158 Benchmark]: Witness Printer took 39.88ms. Allocated memory is still 67.1MB. Free memory was 46.5MB in the beginning and 44.0MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-29 12:57:30,479 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 52.4MB. Free memory was 32.9MB in the beginning and 32.9MB in the end (delta: 33.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 154.15ms. Allocated memory is still 52.4MB. Free memory was 29.1MB in the beginning and 30.9MB in the end (delta: -1.8MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.21ms. Allocated memory was 52.4MB in the beginning and 67.1MB in the end (delta: 14.7MB). Free memory was 30.8MB in the beginning and 50.3MB in the end (delta: -19.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 12.40ms. Allocated memory is still 67.1MB. Free memory was 50.3MB in the beginning and 49.3MB in the end (delta: 941.7kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 143.92ms. Allocated memory is still 67.1MB. Free memory was 49.3MB in the beginning and 40.4MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 4898.34ms. Allocated memory is still 67.1MB. Free memory was 39.9MB in the beginning and 46.5MB in the end (delta: -6.6MB). Peak memory consumption was 19.5MB. Max. memory is 16.1GB. * Witness Printer took 39.88ms. Allocated memory is still 67.1MB. Free memory was 46.5MB in the beginning and 44.0MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 14]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int counter = 0; VAL [counter=0] [L21] int A, R; [L22] long long u, v, r; [L23] A = __VERIFIER_nondet_int() [L24] R = __VERIFIER_nondet_int() [L9] COND FALSE !(!cond) VAL [counter=0] [L9] COND FALSE !(!cond) VAL [counter=0] [L30] u = ((long long) 2 * R) + 1 [L31] v = 1 [L32] r = ((long long) R * R) - A VAL [counter=0] [L34] EXPR counter++ VAL [counter=1] [L34] COND TRUE counter++<2 [L12] COND FALSE !(!(cond)) VAL [counter=1] [L36] COND FALSE !(!(r != 0)) VAL [counter=1] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [counter=1] [L34] EXPR counter++ VAL [counter=2] [L34] COND TRUE counter++<2 [L12] COND FALSE !(!(cond)) VAL [counter=2] [L36] COND FALSE !(!(r != 0)) VAL [counter=2] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [counter=2] [L34] EXPR counter++ VAL [counter=3] [L34] COND FALSE !(counter++<2) [L12] COND TRUE !(cond) VAL [counter=3] [L14] reach_error() VAL [counter=3] - UnprovableResult [Line: 14]: 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, 21 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 4840.40ms, OverallIterations: 6, TraceHistogramMax: 3, EmptinessCheckTime: 7.51ms, AutomataDifference: 2609.73ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 5.84ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 36 SdHoareTripleChecker+Valid, 2458.03ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 36 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 2405.68ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 102 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 249 IncrementalHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 0 mSDtfsCounter, 249 mSolverCounterSat, 3.57ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 75 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 111.01ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=5, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 24.48ms AutomataMinimizationTime, 5 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 37.36ms SsaConstructionTime, 134.30ms SatisfiabilityAnalysisTime, 420.57ms InterpolantComputationTime, 81 NumberOfCodeBlocks, 81 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 70 ConstructedInterpolants, 0 QuantifiedInterpolants, 282 SizeOfPredicates, 14 NumberOfNonLiveVariables, 364 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 0/4 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 12:57:30,500 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...