./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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/cohendiv-ll_unwindbound100.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 7cdbf1a1c8f20bea42ab4ad35fbada62352deeb8460cfeb3778e870071fb234e --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 16:08:18,098 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 16:08:18,105 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 16:08:18,137 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 16:08:18,138 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 16:08:18,139 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 16:08:18,143 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 16:08:18,147 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 16:08:18,149 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 16:08:18,153 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 16:08:18,153 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 16:08:18,155 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 16:08:18,155 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 16:08:18,157 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 16:08:18,158 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 16:08:18,159 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 16:08:18,161 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 16:08:18,161 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 16:08:18,163 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 16:08:18,166 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 16:08:18,172 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 16:08:18,176 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 16:08:18,176 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 16:08:18,177 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 16:08:18,178 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 16:08:18,181 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 16:08:18,182 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 16:08:18,183 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 16:08:18,183 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 16:08:18,184 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 16:08:18,184 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 16:08:18,185 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 16:08:18,186 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 16:08:18,186 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 16:08:18,187 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 16:08:18,187 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 16:08:18,187 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 16:08:18,188 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 16:08:18,188 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 16:08:18,188 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 16:08:18,189 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 16:08:18,190 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 16:08:18,191 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 16:08:18,208 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 16:08:18,208 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 16:08:18,208 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 16:08:18,208 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 16:08:18,209 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 16:08:18,209 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 16:08:18,209 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 16:08:18,209 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 16:08:18,210 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 16:08:18,210 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 16:08:18,210 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 16:08:18,210 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 16:08:18,210 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 16:08:18,210 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 16:08:18,211 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 16:08:18,211 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 16:08:18,214 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 16:08:18,214 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 16:08:18,215 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 16:08:18,216 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 16:08:18,216 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 16:08:18,216 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 16:08:18,216 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 16:08:18,216 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 16:08:18,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 16:08:18,217 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 16:08:18,217 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 16:08:18,217 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 16:08:18,218 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 16:08:18,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 16:08:18,218 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 16:08:18,218 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 16:08:18,218 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 16:08:18,218 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7cdbf1a1c8f20bea42ab4ad35fbada62352deeb8460cfeb3778e870071fb234e [2022-07-13 16:08:18,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 16:08:18,397 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 16:08:18,400 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 16:08:18,401 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 16:08:18,401 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 16:08:18,402 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound100.c [2022-07-13 16:08:18,445 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf86c954d/0f3bf5d74e48457e8ae75f995799fa09/FLAG456f8fbfb [2022-07-13 16:08:18,798 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 16:08:18,799 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound100.c [2022-07-13 16:08:18,803 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf86c954d/0f3bf5d74e48457e8ae75f995799fa09/FLAG456f8fbfb [2022-07-13 16:08:18,810 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf86c954d/0f3bf5d74e48457e8ae75f995799fa09 [2022-07-13 16:08:18,812 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 16:08:18,813 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 16:08:18,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 16:08:18,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 16:08:18,816 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 16:08:18,816 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 04:08:18" (1/1) ... [2022-07-13 16:08:18,817 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53f9c1ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:08:18, skipping insertion in model container [2022-07-13 16:08:18,817 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 04:08:18" (1/1) ... [2022-07-13 16:08:18,821 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 16:08:18,831 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 16:08:18,945 WARN L230 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/cohendiv-ll_unwindbound100.c[576,589] [2022-07-13 16:08:18,962 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 16:08:18,970 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 16:08:18,978 WARN L230 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/cohendiv-ll_unwindbound100.c[576,589] [2022-07-13 16:08:18,981 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 16:08:18,990 INFO L208 MainTranslator]: Completed translation [2022-07-13 16:08:18,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:08:18 WrapperNode [2022-07-13 16:08:18,990 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 16:08:18,991 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 16:08:18,991 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 16:08:18,991 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 16:08:18,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:08:18" (1/1) ... [2022-07-13 16:08:18,999 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:08:18" (1/1) ... [2022-07-13 16:08:19,012 INFO L137 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 66 [2022-07-13 16:08:19,012 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 16:08:19,013 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 16:08:19,013 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 16:08:19,013 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 16:08:19,018 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:08:18" (1/1) ... [2022-07-13 16:08:19,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:08:18" (1/1) ... [2022-07-13 16:08:19,019 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:08:18" (1/1) ... [2022-07-13 16:08:19,019 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:08:18" (1/1) ... [2022-07-13 16:08:19,021 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:08:18" (1/1) ... [2022-07-13 16:08:19,023 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:08:18" (1/1) ... [2022-07-13 16:08:19,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:08:18" (1/1) ... [2022-07-13 16:08:19,024 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 16:08:19,025 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 16:08:19,025 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 16:08:19,025 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 16:08:19,026 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:08:18" (1/1) ... [2022-07-13 16:08:19,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 16:08:19,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 16:08:19,048 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) [2022-07-13 16:08:19,049 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 [2022-07-13 16:08:19,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 16:08:19,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 16:08:19,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 16:08:19,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 16:08:19,073 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-13 16:08:19,073 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-13 16:08:19,112 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 16:08:19,113 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 16:08:19,189 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 16:08:19,193 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 16:08:19,193 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-13 16:08:19,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 04:08:19 BoogieIcfgContainer [2022-07-13 16:08:19,194 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 16:08:19,195 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 16:08:19,196 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 16:08:19,198 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 16:08:19,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 04:08:18" (1/3) ... [2022-07-13 16:08:19,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22ce9781 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 04:08:19, skipping insertion in model container [2022-07-13 16:08:19,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:08:18" (2/3) ... [2022-07-13 16:08:19,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22ce9781 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 04:08:19, skipping insertion in model container [2022-07-13 16:08:19,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 04:08:19" (3/3) ... [2022-07-13 16:08:19,213 INFO L111 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_unwindbound100.c [2022-07-13 16:08:19,222 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 16:08:19,222 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 16:08:19,263 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 16:08:19,283 INFO L357 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, mAutomataTypeConcurrency=PETRI_NET, 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5078fa57, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5ebe5534 [2022-07-13 16:08:19,283 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 16:08:19,286 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-07-13 16:08:19,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-13 16:08:19,291 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 16:08:19,291 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 16:08:19,292 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 16:08:19,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 16:08:19,295 INFO L85 PathProgramCache]: Analyzing trace with hash -555122024, now seen corresponding path program 1 times [2022-07-13 16:08:19,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 16:08:19,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735914962] [2022-07-13 16:08:19,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 16:08:19,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 16:08:19,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 16:08:19,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 16:08:19,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 16:08:19,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735914962] [2022-07-13 16:08:19,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735914962] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 16:08:19,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 16:08:19,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 16:08:19,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783633545] [2022-07-13 16:08:19,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 16:08:19,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 16:08:19,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 16:08:19,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 16:08:19,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 16:08:19,425 INFO L87 Difference]: Start difference. First operand has 29 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 16:08:19,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 16:08:19,446 INFO L93 Difference]: Finished difference Result 55 states and 87 transitions. [2022-07-13 16:08:19,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 16:08:19,449 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-07-13 16:08:19,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 16:08:19,454 INFO L225 Difference]: With dead ends: 55 [2022-07-13 16:08:19,455 INFO L226 Difference]: Without dead ends: 25 [2022-07-13 16:08:19,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 16:08:19,462 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 16:08:19,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 16:08:19,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-07-13 16:08:19,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-07-13 16:08:19,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.3125) internal successors, (21), 17 states have internal predecessors, (21), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-13 16:08:19,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2022-07-13 16:08:19,506 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 9 [2022-07-13 16:08:19,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 16:08:19,506 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2022-07-13 16:08:19,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 16:08:19,507 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2022-07-13 16:08:19,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-13 16:08:19,510 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 16:08:19,510 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 16:08:19,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 16:08:19,512 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 16:08:19,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 16:08:19,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1985514477, now seen corresponding path program 1 times [2022-07-13 16:08:19,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 16:08:19,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806365537] [2022-07-13 16:08:19,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 16:08:19,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 16:08:19,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 16:08:19,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 16:08:19,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 16:08:19,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806365537] [2022-07-13 16:08:19,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806365537] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 16:08:19,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 16:08:19,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 16:08:19,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358020649] [2022-07-13 16:08:19,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 16:08:19,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 16:08:19,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 16:08:19,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 16:08:19,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 16:08:19,585 INFO L87 Difference]: Start difference. First operand 25 states and 34 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 16:08:19,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 16:08:19,616 INFO L93 Difference]: Finished difference Result 34 states and 43 transitions. [2022-07-13 16:08:19,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 16:08:19,616 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-07-13 16:08:19,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 16:08:19,617 INFO L225 Difference]: With dead ends: 34 [2022-07-13 16:08:19,617 INFO L226 Difference]: Without dead ends: 27 [2022-07-13 16:08:19,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 16:08:19,619 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 16:08:19,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 89 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 16:08:19,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-07-13 16:08:19,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-07-13 16:08:19,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 19 states have internal predecessors, (23), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-13 16:08:19,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2022-07-13 16:08:19,625 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 10 [2022-07-13 16:08:19,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 16:08:19,625 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2022-07-13 16:08:19,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 16:08:19,625 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2022-07-13 16:08:19,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-13 16:08:19,625 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 16:08:19,626 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 16:08:19,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 16:08:19,626 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 16:08:19,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 16:08:19,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1984024927, now seen corresponding path program 1 times [2022-07-13 16:08:19,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 16:08:19,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863724461] [2022-07-13 16:08:19,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 16:08:19,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 16:08:19,645 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 16:08:19,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [199841657] [2022-07-13 16:08:19,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 16:08:19,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 16:08:19,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 16:08:19,652 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) [2022-07-13 16:08:19,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 16:08:19,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 16:08:19,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 16:08:19,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 16:08:19,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 16:08:19,777 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 16:08:19,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 16:08:19,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863724461] [2022-07-13 16:08:19,777 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 16:08:19,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199841657] [2022-07-13 16:08:19,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199841657] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 16:08:19,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 16:08:19,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 16:08:19,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359687643] [2022-07-13 16:08:19,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 16:08:19,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 16:08:19,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 16:08:19,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 16:08:19,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 16:08:19,779 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 16:08:19,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 16:08:19,824 INFO L93 Difference]: Finished difference Result 37 states and 48 transitions. [2022-07-13 16:08:19,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 16:08:19,825 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-07-13 16:08:19,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 16:08:19,826 INFO L225 Difference]: With dead ends: 37 [2022-07-13 16:08:19,826 INFO L226 Difference]: Without dead ends: 35 [2022-07-13 16:08:19,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 16:08:19,827 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 6 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 16:08:19,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 113 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 16:08:19,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-07-13 16:08:19,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2022-07-13 16:08:19,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 23 states have internal predecessors, (26), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-07-13 16:08:19,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2022-07-13 16:08:19,834 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 10 [2022-07-13 16:08:19,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 16:08:19,834 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2022-07-13 16:08:19,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 16:08:19,834 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2022-07-13 16:08:19,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-13 16:08:19,835 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 16:08:19,835 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 16:08:19,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 16:08:20,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 16:08:20,051 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 16:08:20,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 16:08:20,052 INFO L85 PathProgramCache]: Analyzing trace with hash -2084809189, now seen corresponding path program 1 times [2022-07-13 16:08:20,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 16:08:20,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492155119] [2022-07-13 16:08:20,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 16:08:20,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 16:08:20,063 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 16:08:20,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1902954647] [2022-07-13 16:08:20,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 16:08:20,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 16:08:20,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 16:08:20,067 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) [2022-07-13 16:08:20,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 16:08:20,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 16:08:20,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 16:08:20,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 16:08:20,166 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 16:08:20,167 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 16:08:20,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 16:08:20,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492155119] [2022-07-13 16:08:20,168 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 16:08:20,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902954647] [2022-07-13 16:08:20,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902954647] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 16:08:20,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 16:08:20,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 16:08:20,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761378488] [2022-07-13 16:08:20,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 16:08:20,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 16:08:20,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 16:08:20,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 16:08:20,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 16:08:20,175 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 16:08:20,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 16:08:20,263 INFO L93 Difference]: Finished difference Result 50 states and 66 transitions. [2022-07-13 16:08:20,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 16:08:20,263 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-07-13 16:08:20,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 16:08:20,264 INFO L225 Difference]: With dead ends: 50 [2022-07-13 16:08:20,265 INFO L226 Difference]: Without dead ends: 47 [2022-07-13 16:08:20,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 16:08:20,267 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 13 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 16:08:20,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 107 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 16:08:20,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-07-13 16:08:20,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2022-07-13 16:08:20,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 30 states have internal predecessors, (36), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-07-13 16:08:20,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 61 transitions. [2022-07-13 16:08:20,277 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 61 transitions. Word has length 15 [2022-07-13 16:08:20,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 16:08:20,277 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 61 transitions. [2022-07-13 16:08:20,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 16:08:20,278 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 61 transitions. [2022-07-13 16:08:20,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-13 16:08:20,279 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 16:08:20,280 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 16:08:20,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 16:08:20,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-07-13 16:08:20,500 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 16:08:20,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 16:08:20,500 INFO L85 PathProgramCache]: Analyzing trace with hash -2002825724, now seen corresponding path program 1 times [2022-07-13 16:08:20,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 16:08:20,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228655149] [2022-07-13 16:08:20,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 16:08:20,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 16:08:20,508 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 16:08:20,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1499701890] [2022-07-13 16:08:20,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 16:08:20,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 16:08:20,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 16:08:20,510 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) [2022-07-13 16:08:20,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 16:08:20,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 16:08:20,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 16:08:20,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 16:08:20,591 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 16:08:20,591 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 16:08:20,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 16:08:20,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228655149] [2022-07-13 16:08:20,592 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 16:08:20,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499701890] [2022-07-13 16:08:20,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499701890] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 16:08:20,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 16:08:20,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 16:08:20,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595867165] [2022-07-13 16:08:20,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 16:08:20,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 16:08:20,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 16:08:20,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 16:08:20,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 16:08:20,593 INFO L87 Difference]: Start difference. First operand 46 states and 61 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 16:08:20,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 16:08:20,642 INFO L93 Difference]: Finished difference Result 75 states and 105 transitions. [2022-07-13 16:08:20,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 16:08:20,642 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2022-07-13 16:08:20,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 16:08:20,643 INFO L225 Difference]: With dead ends: 75 [2022-07-13 16:08:20,643 INFO L226 Difference]: Without dead ends: 73 [2022-07-13 16:08:20,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 16:08:20,644 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 13 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 16:08:20,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 114 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 16:08:20,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-07-13 16:08:20,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 66. [2022-07-13 16:08:20,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 41 states have (on average 1.2926829268292683) internal successors, (53), 43 states have internal predecessors, (53), 20 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-07-13 16:08:20,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 92 transitions. [2022-07-13 16:08:20,655 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 92 transitions. Word has length 23 [2022-07-13 16:08:20,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 16:08:20,655 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 92 transitions. [2022-07-13 16:08:20,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 16:08:20,655 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 92 transitions. [2022-07-13 16:08:20,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-13 16:08:20,656 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 16:08:20,656 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 16:08:20,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 16:08:20,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 16:08:20,864 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 16:08:20,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 16:08:20,865 INFO L85 PathProgramCache]: Analyzing trace with hash -840648207, now seen corresponding path program 1 times [2022-07-13 16:08:20,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 16:08:20,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190119877] [2022-07-13 16:08:20,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 16:08:20,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 16:08:20,872 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 16:08:20,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1453855786] [2022-07-13 16:08:20,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 16:08:20,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 16:08:20,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 16:08:20,874 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) [2022-07-13 16:08:20,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 16:08:20,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 16:08:20,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 16:08:20,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 16:08:20,945 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 16:08:20,945 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 16:08:20,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 16:08:20,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190119877] [2022-07-13 16:08:20,945 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 16:08:20,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453855786] [2022-07-13 16:08:20,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453855786] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 16:08:20,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 16:08:20,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 16:08:20,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935404257] [2022-07-13 16:08:20,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 16:08:20,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 16:08:20,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 16:08:20,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 16:08:20,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 16:08:20,946 INFO L87 Difference]: Start difference. First operand 66 states and 92 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 16:08:20,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 16:08:20,976 INFO L93 Difference]: Finished difference Result 105 states and 145 transitions. [2022-07-13 16:08:20,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 16:08:20,986 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2022-07-13 16:08:20,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 16:08:20,988 INFO L225 Difference]: With dead ends: 105 [2022-07-13 16:08:20,988 INFO L226 Difference]: Without dead ends: 70 [2022-07-13 16:08:20,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 16:08:20,989 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 3 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 16:08:20,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 116 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 16:08:20,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-07-13 16:08:20,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2022-07-13 16:08:20,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 44 states have (on average 1.25) internal successors, (55), 46 states have internal predecessors, (55), 20 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-07-13 16:08:20,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 94 transitions. [2022-07-13 16:08:20,996 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 94 transitions. Word has length 26 [2022-07-13 16:08:20,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 16:08:20,996 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 94 transitions. [2022-07-13 16:08:20,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-13 16:08:20,997 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 94 transitions. [2022-07-13 16:08:20,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-13 16:08:20,997 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 16:08:20,997 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 16:08:21,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 16:08:21,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 16:08:21,203 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 16:08:21,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 16:08:21,204 INFO L85 PathProgramCache]: Analyzing trace with hash 2012484164, now seen corresponding path program 1 times [2022-07-13 16:08:21,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 16:08:21,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517027622] [2022-07-13 16:08:21,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 16:08:21,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 16:08:21,211 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 16:08:21,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [473036074] [2022-07-13 16:08:21,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 16:08:21,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 16:08:21,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 16:08:21,213 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) [2022-07-13 16:08:21,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 16:08:21,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 16:08:21,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 16:08:21,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 16:08:21,307 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-13 16:08:21,308 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 16:08:21,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 16:08:21,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517027622] [2022-07-13 16:08:21,308 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 16:08:21,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473036074] [2022-07-13 16:08:21,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473036074] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 16:08:21,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 16:08:21,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 16:08:21,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461906156] [2022-07-13 16:08:21,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 16:08:21,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 16:08:21,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 16:08:21,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 16:08:21,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 16:08:21,310 INFO L87 Difference]: Start difference. First operand 70 states and 94 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-13 16:08:21,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 16:08:21,380 INFO L93 Difference]: Finished difference Result 76 states and 99 transitions. [2022-07-13 16:08:21,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 16:08:21,380 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2022-07-13 16:08:21,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 16:08:21,381 INFO L225 Difference]: With dead ends: 76 [2022-07-13 16:08:21,381 INFO L226 Difference]: Without dead ends: 74 [2022-07-13 16:08:21,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-07-13 16:08:21,382 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 31 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 16:08:21,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 90 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 16:08:21,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-07-13 16:08:21,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-07-13 16:08:21,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 47 states have (on average 1.2340425531914894) internal successors, (58), 49 states have internal predecessors, (58), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-07-13 16:08:21,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 97 transitions. [2022-07-13 16:08:21,391 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 97 transitions. Word has length 33 [2022-07-13 16:08:21,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 16:08:21,391 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 97 transitions. [2022-07-13 16:08:21,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-13 16:08:21,392 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 97 transitions. [2022-07-13 16:08:21,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-13 16:08:21,392 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 16:08:21,392 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 16:08:21,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-13 16:08:21,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 16:08:21,593 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 16:08:21,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 16:08:21,593 INFO L85 PathProgramCache]: Analyzing trace with hash -2020901362, now seen corresponding path program 1 times [2022-07-13 16:08:21,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 16:08:21,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888469838] [2022-07-13 16:08:21,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 16:08:21,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 16:08:21,600 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 16:08:21,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [829883691] [2022-07-13 16:08:21,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 16:08:21,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 16:08:21,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 16:08:21,601 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 16:08:21,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 16:08:21,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 16:08:21,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 16:08:21,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 16:08:21,705 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-13 16:08:21,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 16:08:21,827 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-13 16:08:21,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 16:08:21,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888469838] [2022-07-13 16:08:21,827 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 16:08:21,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829883691] [2022-07-13 16:08:21,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829883691] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 16:08:21,827 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 16:08:21,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2022-07-13 16:08:21,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237067735] [2022-07-13 16:08:21,827 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 16:08:21,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 16:08:21,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 16:08:21,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 16:08:21,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-13 16:08:21,828 INFO L87 Difference]: Start difference. First operand 74 states and 97 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 7 states have internal predecessors, (22), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-13 16:08:21,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 16:08:21,920 INFO L93 Difference]: Finished difference Result 80 states and 102 transitions. [2022-07-13 16:08:21,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 16:08:21,921 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 7 states have internal predecessors, (22), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 39 [2022-07-13 16:08:21,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 16:08:21,924 INFO L225 Difference]: With dead ends: 80 [2022-07-13 16:08:21,924 INFO L226 Difference]: Without dead ends: 78 [2022-07-13 16:08:21,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-07-13 16:08:21,926 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 32 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 16:08:21,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 79 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 16:08:21,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-07-13 16:08:21,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2022-07-13 16:08:21,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 50 states have (on average 1.22) internal successors, (61), 52 states have internal predecessors, (61), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-07-13 16:08:21,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 100 transitions. [2022-07-13 16:08:21,948 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 100 transitions. Word has length 39 [2022-07-13 16:08:21,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 16:08:21,948 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 100 transitions. [2022-07-13 16:08:21,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 7 states have internal predecessors, (22), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-13 16:08:21,948 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 100 transitions. [2022-07-13 16:08:21,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-13 16:08:21,949 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 16:08:21,949 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 16:08:21,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-13 16:08:22,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 16:08:22,150 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 16:08:22,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 16:08:22,150 INFO L85 PathProgramCache]: Analyzing trace with hash 803844641, now seen corresponding path program 1 times [2022-07-13 16:08:22,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 16:08:22,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802364324] [2022-07-13 16:08:22,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 16:08:22,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 16:08:22,157 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 16:08:22,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1258136562] [2022-07-13 16:08:22,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 16:08:22,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 16:08:22,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 16:08:22,158 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 16:08:22,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-13 16:08:22,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 16:08:22,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 16:08:22,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 16:08:22,273 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 16:08:22,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 16:08:22,331 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-13 16:08:22,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 16:08:22,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802364324] [2022-07-13 16:08:22,331 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 16:08:22,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258136562] [2022-07-13 16:08:22,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258136562] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 16:08:22,332 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 16:08:22,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2022-07-13 16:08:22,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306993577] [2022-07-13 16:08:22,332 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 16:08:22,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 16:08:22,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 16:08:22,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 16:08:22,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-13 16:08:22,335 INFO L87 Difference]: Start difference. First operand 78 states and 100 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 5 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-07-13 16:08:22,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 16:08:22,468 INFO L93 Difference]: Finished difference Result 249 states and 303 transitions. [2022-07-13 16:08:22,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 16:08:22,468 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 5 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 42 [2022-07-13 16:08:22,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 16:08:22,470 INFO L225 Difference]: With dead ends: 249 [2022-07-13 16:08:22,470 INFO L226 Difference]: Without dead ends: 242 [2022-07-13 16:08:22,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-07-13 16:08:22,470 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 112 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 16:08:22,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 205 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 16:08:22,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-07-13 16:08:22,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 231. [2022-07-13 16:08:22,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 150 states have (on average 1.1933333333333334) internal successors, (179), 158 states have internal predecessors, (179), 54 states have call successors, (54), 26 states have call predecessors, (54), 26 states have return successors, (50), 46 states have call predecessors, (50), 50 states have call successors, (50) [2022-07-13 16:08:22,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 283 transitions. [2022-07-13 16:08:22,507 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 283 transitions. Word has length 42 [2022-07-13 16:08:22,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 16:08:22,507 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 283 transitions. [2022-07-13 16:08:22,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 5 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-07-13 16:08:22,508 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 283 transitions. [2022-07-13 16:08:22,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-13 16:08:22,510 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 16:08:22,510 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 16:08:22,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-13 16:08:22,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 16:08:22,719 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 16:08:22,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 16:08:22,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1528082637, now seen corresponding path program 1 times [2022-07-13 16:08:22,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 16:08:22,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303255348] [2022-07-13 16:08:22,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 16:08:22,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 16:08:22,727 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 16:08:22,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [893630956] [2022-07-13 16:08:22,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 16:08:22,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 16:08:22,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 16:08:22,728 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 16:08:22,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-13 16:08:22,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 16:08:22,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-13 16:08:22,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 16:08:22,855 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-13 16:08:22,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 16:08:22,947 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-13 16:08:22,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 16:08:22,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303255348] [2022-07-13 16:08:22,947 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 16:08:22,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893630956] [2022-07-13 16:08:22,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893630956] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 16:08:22,948 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 16:08:22,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-07-13 16:08:22,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756165111] [2022-07-13 16:08:22,948 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 16:08:22,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 16:08:22,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 16:08:22,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 16:08:22,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-13 16:08:22,949 INFO L87 Difference]: Start difference. First operand 231 states and 283 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 5 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-07-13 16:08:23,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 16:08:23,188 INFO L93 Difference]: Finished difference Result 259 states and 314 transitions. [2022-07-13 16:08:23,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 16:08:23,191 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 5 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 47 [2022-07-13 16:08:23,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 16:08:23,191 INFO L225 Difference]: With dead ends: 259 [2022-07-13 16:08:23,191 INFO L226 Difference]: Without dead ends: 0 [2022-07-13 16:08:23,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 83 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-07-13 16:08:23,193 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 56 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 16:08:23,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 118 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 16:08:23,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-13 16:08:23,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-13 16:08:23,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 16:08:23,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-13 16:08:23,194 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 47 [2022-07-13 16:08:23,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 16:08:23,194 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-13 16:08:23,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 5 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-07-13 16:08:23,194 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-13 16:08:23,194 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-13 16:08:23,196 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-13 16:08:23,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-13 16:08:23,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-13 16:08:23,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-13 16:08:24,053 INFO L902 garLoopResultBuilder]: At program point L64(lines 23 65) the Hoare annotation is: true [2022-07-13 16:08:24,053 INFO L895 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse0)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~r~0#1|) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1| .cse0)))) [2022-07-13 16:08:24,053 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2022-07-13 16:08:24,053 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-13 16:08:24,054 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-13 16:08:24,054 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-13 16:08:24,054 INFO L899 garLoopResultBuilder]: For program point L49(lines 46 58) no Hoare annotation was computed. [2022-07-13 16:08:24,054 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2022-07-13 16:08:24,054 INFO L899 garLoopResultBuilder]: For program point L37-1(lines 37 61) no Hoare annotation was computed. [2022-07-13 16:08:24,054 INFO L895 garLoopResultBuilder]: At program point L37-3(lines 37 61) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse0)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1| .cse0)))) [2022-07-13 16:08:24,054 INFO L895 garLoopResultBuilder]: At program point L37-4(lines 37 61) the Hoare annotation is: (or (and (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0)) (let ((.cse0 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse0)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1| .cse0))))) [2022-07-13 16:08:24,054 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-13 16:08:24,054 INFO L895 garLoopResultBuilder]: At program point L54(line 54) the Hoare annotation is: (let ((.cse1 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse0 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse0)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~r~0#1|) (<= (* .cse1 2) |ULTIMATE.start_main_~r~0#1|) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ .cse1 |ULTIMATE.start_main_~r~0#1| .cse0)))) [2022-07-13 16:08:24,054 INFO L899 garLoopResultBuilder]: For program point L54-1(line 54) no Hoare annotation was computed. [2022-07-13 16:08:24,054 INFO L899 garLoopResultBuilder]: For program point L46-1(lines 46 58) no Hoare annotation was computed. [2022-07-13 16:08:24,054 INFO L895 garLoopResultBuilder]: At program point L46-3(lines 46 58) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= .cse0 |ULTIMATE.start_main_~b~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~r~0#1|) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ .cse0 |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))))) [2022-07-13 16:08:24,054 INFO L899 garLoopResultBuilder]: For program point L46-4(lines 46 58) no Hoare annotation was computed. [2022-07-13 16:08:24,054 INFO L895 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse0)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1| .cse0)))) [2022-07-13 16:08:24,054 INFO L895 garLoopResultBuilder]: At program point L38-1(line 38) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse0)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1| .cse0)))) [2022-07-13 16:08:24,055 INFO L899 garLoopResultBuilder]: For program point L63(line 63) no Hoare annotation was computed. [2022-07-13 16:08:24,055 INFO L895 garLoopResultBuilder]: At program point L47(line 47) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse0)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~r~0#1|) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1| .cse0)))) [2022-07-13 16:08:24,055 INFO L895 garLoopResultBuilder]: At program point L47-1(line 47) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse0)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~r~0#1|) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1| .cse0)))) [2022-07-13 16:08:24,055 INFO L899 garLoopResultBuilder]: For program point L39(lines 37 61) no Hoare annotation was computed. [2022-07-13 16:08:24,055 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2022-07-13 16:08:24,055 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2022-07-13 16:08:24,055 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true [2022-07-13 16:08:24,055 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2022-07-13 16:08:24,055 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2022-07-13 16:08:24,055 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2022-07-13 16:08:24,057 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 16:08:24,058 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 16:08:24,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 04:08:24 BoogieIcfgContainer [2022-07-13 16:08:24,069 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 16:08:24,069 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 16:08:24,069 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 16:08:24,069 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 16:08:24,070 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 04:08:19" (3/4) ... [2022-07-13 16:08:24,072 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-13 16:08:24,076 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-07-13 16:08:24,079 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-07-13 16:08:24,079 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-13 16:08:24,080 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-13 16:08:24,080 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-13 16:08:24,104 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-13 16:08:24,104 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 16:08:24,105 INFO L158 Benchmark]: Toolchain (without parser) took 5291.85ms. Allocated memory was 92.3MB in the beginning and 134.2MB in the end (delta: 41.9MB). Free memory was 62.5MB in the beginning and 77.6MB in the end (delta: -15.2MB). Peak memory consumption was 27.0MB. Max. memory is 16.1GB. [2022-07-13 16:08:24,105 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 92.3MB. Free memory was 51.0MB in the beginning and 51.0MB in the end (delta: 69.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 16:08:24,105 INFO L158 Benchmark]: CACSL2BoogieTranslator took 176.99ms. Allocated memory is still 92.3MB. Free memory was 62.2MB in the beginning and 69.1MB in the end (delta: -6.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 16:08:24,105 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.30ms. Allocated memory is still 92.3MB. Free memory was 69.1MB in the beginning and 67.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 16:08:24,106 INFO L158 Benchmark]: Boogie Preprocessor took 11.67ms. Allocated memory is still 92.3MB. Free memory was 67.7MB in the beginning and 66.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 16:08:24,106 INFO L158 Benchmark]: RCFGBuilder took 169.36ms. Allocated memory is still 92.3MB. Free memory was 66.7MB in the beginning and 56.5MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 16:08:24,106 INFO L158 Benchmark]: TraceAbstraction took 4873.29ms. Allocated memory was 92.3MB in the beginning and 134.2MB in the end (delta: 41.9MB). Free memory was 56.2MB in the beginning and 80.8MB in the end (delta: -24.6MB). Peak memory consumption was 41.8MB. Max. memory is 16.1GB. [2022-07-13 16:08:24,107 INFO L158 Benchmark]: Witness Printer took 35.09ms. Allocated memory is still 134.2MB. Free memory was 80.8MB in the beginning and 77.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-13 16:08:24,108 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 92.3MB. Free memory was 51.0MB in the beginning and 51.0MB in the end (delta: 69.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 176.99ms. Allocated memory is still 92.3MB. Free memory was 62.2MB in the beginning and 69.1MB in the end (delta: -6.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.30ms. Allocated memory is still 92.3MB. Free memory was 69.1MB in the beginning and 67.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 11.67ms. Allocated memory is still 92.3MB. Free memory was 67.7MB in the beginning and 66.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 169.36ms. Allocated memory is still 92.3MB. Free memory was 66.7MB in the beginning and 56.5MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 4873.29ms. Allocated memory was 92.3MB in the beginning and 134.2MB in the end (delta: 41.9MB). Free memory was 56.2MB in the beginning and 80.8MB in the end (delta: -24.6MB). Peak memory consumption was 41.8MB. Max. memory is 16.1GB. * Witness Printer took 35.09ms. Allocated memory is still 134.2MB. Free memory was 80.8MB in the beginning and 77.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.8s, OverallIterations: 10, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 282 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 266 mSDsluCounter, 1069 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 722 mSDsCounter, 165 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 684 IncrementalHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 165 mSolverCounterUnsat, 347 mSDtfsCounter, 684 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 374 GetRequests, 312 SyntacticMatches, 3 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=231occurred in iteration=9, InterpolantAutomatonStates: 62, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 22 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 90 PreInvPairs, 171 NumberOfFragments, 264 HoareAnnotationTreeSize, 90 FomulaSimplifications, 3 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 2967 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 254 NumberOfCodeBlocks, 254 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 369 ConstructedInterpolants, 0 QuantifiedInterpolants, 998 SizeOfPredicates, 21 NumberOfNonLiveVariables, 779 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 13 InterpolantComputations, 7 PerfectInterpolantSequences, 358/408 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: (((cond == 1 && a * y == b) && 1 <= y) && 1 <= r) && b + x == a * y + r + q * y - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((cond == 1 && x == r + q * y) && 1 <= y) && b + x == a * y + r + q * y RESULT: Ultimate proved your program to be correct! [2022-07-13 16:08:24,135 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE