./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/hard-u_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-u_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 42b0614d1b870e5abae2e6c908c15eb732e05fe5 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 13:19:08,807 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 13:19:08,810 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 13:19:08,843 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 13:19:08,844 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 13:19:08,845 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 13:19:08,846 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 13:19:08,848 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 13:19:08,849 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 13:19:08,850 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 13:19:08,851 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 13:19:08,852 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 13:19:08,852 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 13:19:08,853 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 13:19:08,854 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 13:19:08,855 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 13:19:08,856 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 13:19:08,856 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 13:19:08,858 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 13:19:08,859 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 13:19:08,860 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 13:19:08,861 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 13:19:08,862 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 13:19:08,863 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 13:19:08,865 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 13:19:08,865 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 13:19:08,865 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 13:19:08,866 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 13:19:08,866 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 13:19:08,867 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 13:19:08,867 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 13:19:08,868 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 13:19:08,869 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 13:19:08,869 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 13:19:08,870 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 13:19:08,870 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 13:19:08,871 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 13:19:08,871 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 13:19:08,872 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 13:19:08,872 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 13:19:08,873 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 13:19:08,874 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 13:19:08,892 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 13:19:08,892 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 13:19:08,893 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 13:19:08,893 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 13:19:08,894 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 13:19:08,894 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 13:19:08,894 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 13:19:08,895 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 13:19:08,895 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 13:19:08,895 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 13:19:08,895 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 13:19:08,896 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 13:19:08,896 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 13:19:08,896 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 13:19:08,896 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 13:19:08,897 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 13:19:08,897 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 13:19:08,897 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 13:19:08,897 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 13:19:08,898 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 13:19:08,898 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 13:19:08,898 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 13:19:08,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 13:19:08,899 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 13:19:08,899 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 13:19:08,899 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 13:19:08,900 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 13:19:08,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 13:19:08,900 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 13:19:08,900 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 13:19:08,901 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 42b0614d1b870e5abae2e6c908c15eb732e05fe5 [2021-08-29 13:19:09,189 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 13:19:09,205 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 13:19:09,207 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 13:19:09,208 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 13:19:09,209 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 13:19:09,210 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound1.c [2021-08-29 13:19:09,269 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31c431456/99f6a8fce73f48e193e9afc5e8fd7ac6/FLAG46e0a93c5 [2021-08-29 13:19:09,649 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 13:19:09,649 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound1.c [2021-08-29 13:19:09,654 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31c431456/99f6a8fce73f48e193e9afc5e8fd7ac6/FLAG46e0a93c5 [2021-08-29 13:19:10,072 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31c431456/99f6a8fce73f48e193e9afc5e8fd7ac6 [2021-08-29 13:19:10,074 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 13:19:10,075 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 13:19:10,076 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 13:19:10,076 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 13:19:10,079 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 13:19:10,079 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 01:19:10" (1/1) ... [2021-08-29 13:19:10,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cd1b8df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:19:10, skipping insertion in model container [2021-08-29 13:19:10,081 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 01:19:10" (1/1) ... [2021-08-29 13:19:10,087 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 13:19:10,099 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 13:19:10,199 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-u_unwindbound1.c[545,558] [2021-08-29 13:19:10,215 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 13:19:10,222 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 13:19:10,231 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-u_unwindbound1.c[545,558] [2021-08-29 13:19:10,237 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 13:19:10,247 INFO L208 MainTranslator]: Completed translation [2021-08-29 13:19:10,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:19:10 WrapperNode [2021-08-29 13:19:10,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 13:19:10,248 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 13:19:10,248 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 13:19:10,248 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 13:19:10,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:19:10" (1/1) ... [2021-08-29 13:19:10,258 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:19:10" (1/1) ... [2021-08-29 13:19:10,315 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 13:19:10,316 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 13:19:10,316 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 13:19:10,316 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 13:19:10,322 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:19:10" (1/1) ... [2021-08-29 13:19:10,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:19:10" (1/1) ... [2021-08-29 13:19:10,323 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:19:10" (1/1) ... [2021-08-29 13:19:10,324 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:19:10" (1/1) ... [2021-08-29 13:19:10,327 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:19:10" (1/1) ... [2021-08-29 13:19:10,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:19:10" (1/1) ... [2021-08-29 13:19:10,331 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:19:10" (1/1) ... [2021-08-29 13:19:10,333 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 13:19:10,334 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 13:19:10,334 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 13:19:10,334 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 13:19:10,335 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:19:10" (1/1) ... [2021-08-29 13:19:10,349 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 13:19:10,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 13:19:10,382 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 13:19:10,388 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 13:19:10,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 13:19:10,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 13:19:10,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 13:19:10,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 13:19:10,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_int [2021-08-29 13:19:10,547 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 13:19:10,548 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-08-29 13:19:10,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 01:19:10 BoogieIcfgContainer [2021-08-29 13:19:10,549 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 13:19:10,550 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 13:19:10,550 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 13:19:10,553 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 13:19:10,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 01:19:10" (1/3) ... [2021-08-29 13:19:10,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c0ae9d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 01:19:10, skipping insertion in model container [2021-08-29 13:19:10,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:19:10" (2/3) ... [2021-08-29 13:19:10,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c0ae9d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 01:19:10, skipping insertion in model container [2021-08-29 13:19:10,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 01:19:10" (3/3) ... [2021-08-29 13:19:10,555 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-u_unwindbound1.c [2021-08-29 13:19:10,559 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 13:19:10,559 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-08-29 13:19:10,594 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 13:19:10,599 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 13:19:10,599 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-08-29 13:19:10,611 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 13:19:10,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-29 13:19:10,615 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 13:19:10,615 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 13:19:10,616 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 13:19:10,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 13:19:10,620 INFO L82 PathProgramCache]: Analyzing trace with hash 119446382, now seen corresponding path program 1 times [2021-08-29 13:19:10,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 13:19:10,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722137904] [2021-08-29 13:19:10,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:19:10,628 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 13:19:10,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 13:19:10,800 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 13:19:10,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 13:19:10,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722137904] [2021-08-29 13:19:10,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722137904] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 13:19:10,802 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 13:19:10,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 13:19:10,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699365733] [2021-08-29 13:19:10,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 13:19:10,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 13:19:10,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 13:19:10,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 13:19:10,863 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 13:19:10,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 13:19:10,998 INFO L93 Difference]: Finished difference Result 79 states and 106 transitions. [2021-08-29 13:19:10,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 13:19:11,000 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 13:19:11,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 13:19:11,007 INFO L225 Difference]: With dead ends: 79 [2021-08-29 13:19:11,011 INFO L226 Difference]: Without dead ends: 37 [2021-08-29 13:19:11,014 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 13:19:11,017 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 96.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.43ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 115.37ms IncrementalHoareTripleChecker+Time [2021-08-29 13:19:11,020 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 45 Unknown, 0 Unchecked, 0.43ms Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 115.37ms Time] [2021-08-29 13:19:11,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-08-29 13:19:11,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-08-29 13:19:11,050 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 13:19:11,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2021-08-29 13:19:11,054 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 8 [2021-08-29 13:19:11,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 13:19:11,055 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2021-08-29 13:19:11,055 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 13:19:11,055 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2021-08-29 13:19:11,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-29 13:19:11,056 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 13:19:11,056 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 13:19:11,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 13:19:11,057 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 13:19:11,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 13:19:11,060 INFO L82 PathProgramCache]: Analyzing trace with hash 176704684, now seen corresponding path program 1 times [2021-08-29 13:19:11,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 13:19:11,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498856277] [2021-08-29 13:19:11,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:19:11,061 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 13:19:11,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 13:19:11,158 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 13:19:11,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 13:19:11,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498856277] [2021-08-29 13:19:11,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498856277] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 13:19:11,159 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 13:19:11,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 13:19:11,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229023805] [2021-08-29 13:19:11,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 13:19:11,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 13:19:11,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 13:19:11,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 13:19:11,163 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 13:19:11,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 13:19:11,320 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2021-08-29 13:19:11,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 13:19:11,320 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 13:19:11,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 13:19:11,321 INFO L225 Difference]: With dead ends: 61 [2021-08-29 13:19:11,322 INFO L226 Difference]: Without dead ends: 59 [2021-08-29 13:19:11,322 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.93ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 13:19:11,323 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 49 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 97.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.92ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 132.72ms IncrementalHoareTripleChecker+Time [2021-08-29 13:19:11,324 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 0 Invalid, 107 Unknown, 0 Unchecked, 1.92ms Time], IncrementalHoareTripleChecker [9 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 132.72ms Time] [2021-08-29 13:19:11,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-08-29 13:19:11,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 35. [2021-08-29 13:19:11,329 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 13:19:11,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2021-08-29 13:19:11,330 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 8 [2021-08-29 13:19:11,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 13:19:11,331 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2021-08-29 13:19:11,331 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 13:19:11,331 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2021-08-29 13:19:11,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-29 13:19:11,332 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 13:19:11,332 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 13:19:11,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-29 13:19:11,333 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 13:19:11,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 13:19:11,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1986071569, now seen corresponding path program 1 times [2021-08-29 13:19:11,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 13:19:11,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320926544] [2021-08-29 13:19:11,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:19:11,334 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 13:19:11,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 13:19:11,363 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 13:19:11,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 13:19:11,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320926544] [2021-08-29 13:19:11,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320926544] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 13:19:11,364 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 13:19:11,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 13:19:11,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121901324] [2021-08-29 13:19:11,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 13:19:11,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 13:19:11,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 13:19:11,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 13:19:11,366 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 13:19:11,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 13:19:11,464 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2021-08-29 13:19:11,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 13:19:11,465 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 13:19:11,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 13:19:11,466 INFO L225 Difference]: With dead ends: 56 [2021-08-29 13:19:11,467 INFO L226 Difference]: Without dead ends: 37 [2021-08-29 13:19:11,467 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.25ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 13:19:11,469 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 72.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.46ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 88.76ms IncrementalHoareTripleChecker+Time [2021-08-29 13:19:11,471 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 113 Unknown, 0 Unchecked, 1.46ms Time], IncrementalHoareTripleChecker [0 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 88.76ms Time] [2021-08-29 13:19:11,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-08-29 13:19:11,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-08-29 13:19:11,480 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 13:19:11,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2021-08-29 13:19:11,482 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 10 [2021-08-29 13:19:11,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 13:19:11,482 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2021-08-29 13:19:11,482 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 13:19:11,482 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2021-08-29 13:19:11,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-29 13:19:11,483 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 13:19:11,483 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 13:19:11,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-29 13:19:11,484 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 13:19:11,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 13:19:11,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1985334737, now seen corresponding path program 1 times [2021-08-29 13:19:11,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 13:19:11,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057881724] [2021-08-29 13:19:11,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:19:11,486 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 13:19:11,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 13:19:11,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 13:19:11,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 13:19:11,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057881724] [2021-08-29 13:19:11,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057881724] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 13:19:11,555 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 13:19:11,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 13:19:11,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899575401] [2021-08-29 13:19:11,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 13:19:11,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 13:19:11,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 13:19:11,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 13:19:11,557 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 13:19:11,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 13:19:11,651 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2021-08-29 13:19:11,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 13:19:11,652 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 13:19:11,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 13:19:11,654 INFO L225 Difference]: With dead ends: 56 [2021-08-29 13:19:11,654 INFO L226 Difference]: Without dead ends: 54 [2021-08-29 13:19:11,655 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.61ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 13:19:11,665 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 42 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.12ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 65.30ms IncrementalHoareTripleChecker+Time [2021-08-29 13:19:11,666 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 0 Invalid, 97 Unknown, 0 Unchecked, 3.12ms Time], IncrementalHoareTripleChecker [12 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 65.30ms Time] [2021-08-29 13:19:11,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-08-29 13:19:11,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 35. [2021-08-29 13:19:11,674 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 13:19:11,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2021-08-29 13:19:11,677 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 10 [2021-08-29 13:19:11,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 13:19:11,677 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2021-08-29 13:19:11,678 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 13:19:11,678 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2021-08-29 13:19:11,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-29 13:19:11,679 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 13:19:11,679 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 13:19:11,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-29 13:19:11,680 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 13:19:11,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 13:19:11,681 INFO L82 PathProgramCache]: Analyzing trace with hash -941046702, now seen corresponding path program 1 times [2021-08-29 13:19:11,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 13:19:11,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815489202] [2021-08-29 13:19:11,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:19:11,681 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 13:19:11,704 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 13:19:11,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [450285484] [2021-08-29 13:19:11,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:19:11,711 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 13:19:11,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 13:19:11,713 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 13:19:11,716 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 13:19:11,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 13:19:11,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-29 13:19:11,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 13:19:11,850 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 13:19:11,850 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 13:19:11,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 13:19:11,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815489202] [2021-08-29 13:19:11,851 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 13:19:11,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450285484] [2021-08-29 13:19:11,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450285484] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 13:19:11,851 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 13:19:11,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 13:19:11,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924985318] [2021-08-29 13:19:11,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 13:19:11,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 13:19:11,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 13:19:11,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 13:19:11,853 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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 13:19:13,915 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-08-29 13:19:14,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 13:19:14,099 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2021-08-29 13:19:14,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 13:19:14,099 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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 13:19:14,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 13:19:14,100 INFO L225 Difference]: With dead ends: 66 [2021-08-29 13:19:14,100 INFO L226 Difference]: Without dead ends: 58 [2021-08-29 13:19:14,100 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.22ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 13:19:14,101 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 25 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2076.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.83ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2231.03ms IncrementalHoareTripleChecker+Time [2021-08-29 13:19:14,101 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 0 Invalid, 118 Unknown, 0 Unchecked, 0.83ms Time], IncrementalHoareTripleChecker [7 Valid, 110 Invalid, 1 Unknown, 0 Unchecked, 2231.03ms Time] [2021-08-29 13:19:14,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-08-29 13:19:14,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 49. [2021-08-29 13:19:14,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 44 states have (on average 1.2954545454545454) internal successors, (57), 48 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 13:19:14,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2021-08-29 13:19:14,107 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 12 [2021-08-29 13:19:14,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 13:19:14,107 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2021-08-29 13:19:14,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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 13:19:14,107 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2021-08-29 13:19:14,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-29 13:19:14,108 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 13:19:14,108 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 13:19:14,132 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 13:19:14,308 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 13:19:14,309 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 13:19:14,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 13:19:14,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1803611644, now seen corresponding path program 1 times [2021-08-29 13:19:14,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 13:19:14,310 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744210114] [2021-08-29 13:19:14,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:19:14,310 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 13:19:14,319 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 13:19:14,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1641157290] [2021-08-29 13:19:14,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:19:14,320 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 13:19:14,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 13:19:14,324 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 13:19:14,325 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 13:19:14,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 13:19:14,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-29 13:19:14,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 13:19:14,429 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 13:19:14,430 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 13:19:14,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 13:19:14,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744210114] [2021-08-29 13:19:14,430 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 13:19:14,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641157290] [2021-08-29 13:19:14,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641157290] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 13:19:14,431 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 13:19:14,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 13:19:14,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466746148] [2021-08-29 13:19:14,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 13:19:14,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 13:19:14,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 13:19:14,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-29 13:19:14,432 INFO L87 Difference]: Start difference. First operand 49 states and 57 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 13:19:14,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 13:19:14,507 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2021-08-29 13:19:14,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 13:19:14,508 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 13:19:14,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 13:19:14,508 INFO L225 Difference]: With dead ends: 61 [2021-08-29 13:19:14,508 INFO L226 Difference]: Without dead ends: 36 [2021-08-29 13:19:14,509 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 15.40ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-08-29 13:19:14,509 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 18 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.55ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 55.48ms IncrementalHoareTripleChecker+Time [2021-08-29 13:19:14,510 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 0 Invalid, 58 Unknown, 0 Unchecked, 0.55ms Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 55.48ms Time] [2021-08-29 13:19:14,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-08-29 13:19:14,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-08-29 13:19:14,519 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 13:19:14,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2021-08-29 13:19:14,519 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 16 [2021-08-29 13:19:14,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 13:19:14,520 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2021-08-29 13:19:14,520 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 13:19:14,520 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2021-08-29 13:19:14,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-29 13:19:14,521 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 13:19:14,521 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 13:19:14,537 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-08-29 13:19:14,726 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 13:19:14,726 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 13:19:14,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 13:19:14,726 INFO L82 PathProgramCache]: Analyzing trace with hash 77359410, now seen corresponding path program 1 times [2021-08-29 13:19:14,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 13:19:14,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196663934] [2021-08-29 13:19:14,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:19:14,727 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 13:19:14,734 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 13:19:14,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [560598777] [2021-08-29 13:19:14,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:19:14,734 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 13:19:14,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 13:19:14,735 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 13:19:14,740 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 13:19:14,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 13:19:14,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-29 13:19:14,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 13:19:14,965 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 13:19:14,966 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 13:19:14,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 13:19:14,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196663934] [2021-08-29 13:19:14,966 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 13:19:14,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560598777] [2021-08-29 13:19:14,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560598777] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 13:19:14,967 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 13:19:14,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-29 13:19:14,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150489167] [2021-08-29 13:19:14,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 13:19:14,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 13:19:14,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 13:19:14,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-29 13:19:14,969 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 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 13:19:15,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 13:19:15,092 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2021-08-29 13:19:15,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 13:19:15,092 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 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 13:19:15,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 13:19:15,093 INFO L225 Difference]: With dead ends: 44 [2021-08-29 13:19:15,093 INFO L226 Difference]: Without dead ends: 38 [2021-08-29 13:19:15,093 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 47.02ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-08-29 13:19:15,094 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 21 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 67.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.69ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 88.82ms IncrementalHoareTripleChecker+Time [2021-08-29 13:19:15,094 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 0 Invalid, 76 Unknown, 0 Unchecked, 0.69ms Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 88.82ms Time] [2021-08-29 13:19:15,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-08-29 13:19:15,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 30. [2021-08-29 13:19:15,103 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 13:19:15,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2021-08-29 13:19:15,104 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 17 [2021-08-29 13:19:15,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 13:19:15,104 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2021-08-29 13:19:15,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 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 13:19:15,105 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2021-08-29 13:19:15,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-29 13:19:15,106 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 13:19:15,106 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 13:19:15,128 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 13:19:15,316 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 13:19:15,317 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 13:19:15,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 13:19:15,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1642186908, now seen corresponding path program 1 times [2021-08-29 13:19:15,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 13:19:15,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116704975] [2021-08-29 13:19:15,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:19:15,318 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 13:19:15,324 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 13:19:15,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1127730104] [2021-08-29 13:19:15,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:19:15,325 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 13:19:15,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 13:19:15,326 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 13:19:15,329 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 13:19:15,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 13:19:15,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-29 13:19:15,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 13:19:15,435 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 13:19:15,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 13:19:15,496 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 13:19:15,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 13:19:15,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116704975] [2021-08-29 13:19:15,496 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 13:19:15,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127730104] [2021-08-29 13:19:15,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127730104] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 13:19:15,497 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 13:19:15,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-08-29 13:19:15,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536561841] [2021-08-29 13:19:15,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 13:19:15,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 13:19:15,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 13:19:15,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-29 13:19:15,498 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 13:19:15,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 13:19:15,546 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2021-08-29 13:19:15,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 13:19:15,546 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 13:19:15,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 13:19:15,547 INFO L225 Difference]: With dead ends: 40 [2021-08-29 13:19:15,547 INFO L226 Difference]: Without dead ends: 22 [2021-08-29 13:19:15,547 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 12.67ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-08-29 13:19:15,548 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 13 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.34ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.15ms IncrementalHoareTripleChecker+Time [2021-08-29 13:19:15,548 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 0 Invalid, 48 Unknown, 0 Unchecked, 0.34ms Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 40.15ms Time] [2021-08-29 13:19:15,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-08-29 13:19:15,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-08-29 13:19:15,550 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 13:19:15,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 21 transitions. [2021-08-29 13:19:15,551 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 21 transitions. Word has length 20 [2021-08-29 13:19:15,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 13:19:15,551 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 21 transitions. [2021-08-29 13:19:15,551 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 13:19:15,551 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 21 transitions. [2021-08-29 13:19:15,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-29 13:19:15,551 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 13:19:15,552 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 13:19:15,576 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 13:19:15,774 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 13:19:15,774 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 13:19:15,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 13:19:15,775 INFO L82 PathProgramCache]: Analyzing trace with hash 125341744, now seen corresponding path program 1 times [2021-08-29 13:19:15,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 13:19:15,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005025965] [2021-08-29 13:19:15,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:19:15,775 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 13:19:15,791 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 13:19:15,791 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [270769220] [2021-08-29 13:19:15,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 13:19:15,792 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 13:19:15,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 13:19:15,801 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 13:19:15,811 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 13:19:15,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 13:19:15,850 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-29 13:19:15,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 13:19:15,896 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-29 13:19:15,897 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-29 13:19:15,897 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2021-08-29 13:19:15,898 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2021-08-29 13:19:15,898 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2021-08-29 13:19:15,898 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2021-08-29 13:19:15,899 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2021-08-29 13:19:15,899 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2021-08-29 13:19:15,899 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2021-08-29 13:19:15,927 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 13:19:16,099 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 13:19:16,104 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 13:19:16,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 01:19:16 BoogieIcfgContainer [2021-08-29 13:19:16,129 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 13:19:16,130 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 13:19:16,130 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 13:19:16,130 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 13:19:16,130 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 01:19:10" (3/4) ... [2021-08-29 13:19:16,132 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-29 13:19:16,165 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 13:19:16,167 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 13:19:16,168 INFO L158 Benchmark]: Toolchain (without parser) took 6092.64ms. Allocated memory was 67.1MB in the beginning and 90.2MB in the end (delta: 23.1MB). Free memory was 48.5MB in the beginning and 51.0MB in the end (delta: -2.5MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. [2021-08-29 13:19:16,168 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 67.1MB. Free memory was 49.6MB in the beginning and 49.5MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 13:19:16,168 INFO L158 Benchmark]: CACSL2BoogieTranslator took 171.37ms. Allocated memory is still 67.1MB. Free memory was 48.3MB in the beginning and 38.3MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-29 13:19:16,169 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.06ms. Allocated memory is still 67.1MB. Free memory was 38.3MB in the beginning and 50.8MB in the end (delta: -12.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-29 13:19:16,169 INFO L158 Benchmark]: Boogie Preprocessor took 17.52ms. Allocated memory is still 67.1MB. Free memory was 50.8MB in the beginning and 49.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 13:19:16,169 INFO L158 Benchmark]: RCFGBuilder took 215.39ms. Allocated memory is still 67.1MB. Free memory was 49.7MB in the beginning and 40.0MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-29 13:19:16,169 INFO L158 Benchmark]: TraceAbstraction took 5579.07ms. Allocated memory was 67.1MB in the beginning and 90.2MB in the end (delta: 23.1MB). Free memory was 39.8MB in the beginning and 53.7MB in the end (delta: -14.0MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. [2021-08-29 13:19:16,170 INFO L158 Benchmark]: Witness Printer took 37.42ms. Allocated memory is still 90.2MB. Free memory was 53.7MB in the beginning and 51.0MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 13:19:16,172 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 67.1MB. Free memory was 49.6MB in the beginning and 49.5MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 171.37ms. Allocated memory is still 67.1MB. Free memory was 48.3MB in the beginning and 38.3MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.06ms. Allocated memory is still 67.1MB. Free memory was 38.3MB in the beginning and 50.8MB in the end (delta: -12.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.52ms. Allocated memory is still 67.1MB. Free memory was 50.8MB in the beginning and 49.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 215.39ms. Allocated memory is still 67.1MB. Free memory was 49.7MB in the beginning and 40.0MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 5579.07ms. Allocated memory was 67.1MB in the beginning and 90.2MB in the end (delta: 23.1MB). Free memory was 39.8MB in the beginning and 53.7MB in the end (delta: -14.0MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. * Witness Printer took 37.42ms. Allocated memory is still 90.2MB. Free memory was 53.7MB in the beginning and 51.0MB in the end (delta: 2.7MB). 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] unsigned int 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: 5510.58ms, OverallIterations: 9, TraceHistogramMax: 2, EmptinessCheckTime: 11.97ms, AutomataDifference: 3105.07ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 8.01ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 168 SdHoareTripleChecker+Valid, 2817.64ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 168 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 2543.60ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 238 mSDsCounter, 38 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 623 IncrementalHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 38 mSolverCounterUnsat, 0 mSDtfsCounter, 623 mSolverCounterSat, 9.34ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 111.14ms 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: 68.08ms AutomataMinimizationTime, 8 MinimizatonAttempts, 60 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 49.31ms SsaConstructionTime, 141.44ms SatisfiabilityAnalysisTime, 692.68ms InterpolantComputationTime, 122 NumberOfCodeBlocks, 122 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 112 ConstructedInterpolants, 0 QuantifiedInterpolants, 345 SizeOfPredicates, 12 NumberOfNonLiveVariables, 319 ConjunctsInSsa, 27 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 13:19:16,209 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...