./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/egcd-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench/egcd-ll.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5cf588c7d7521936f2238a5a4b8ed55e91050a69daa6016b5b2b4a486ef1b9f8 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 03:00:13,079 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 03:00:13,081 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 03:00:13,119 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 03:00:13,120 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 03:00:13,121 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 03:00:13,125 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 03:00:13,128 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 03:00:13,130 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 03:00:13,142 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 03:00:13,144 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 03:00:13,148 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 03:00:13,148 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 03:00:13,150 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 03:00:13,151 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 03:00:13,154 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 03:00:13,154 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 03:00:13,156 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 03:00:13,157 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 03:00:13,163 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 03:00:13,164 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 03:00:13,165 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 03:00:13,167 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 03:00:13,167 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 03:00:13,169 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 03:00:13,175 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 03:00:13,176 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 03:00:13,176 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 03:00:13,177 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 03:00:13,177 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 03:00:13,178 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 03:00:13,178 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 03:00:13,180 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 03:00:13,181 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 03:00:13,182 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 03:00:13,183 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 03:00:13,183 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 03:00:13,183 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 03:00:13,184 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 03:00:13,184 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 03:00:13,185 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 03:00:13,186 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 03:00:13,191 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 03:00:13,223 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 03:00:13,224 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 03:00:13,224 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 03:00:13,224 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 03:00:13,225 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 03:00:13,225 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 03:00:13,226 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 03:00:13,226 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 03:00:13,226 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 03:00:13,227 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 03:00:13,227 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 03:00:13,228 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 03:00:13,228 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 03:00:13,228 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 03:00:13,228 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 03:00:13,228 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 03:00:13,229 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 03:00:13,229 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 03:00:13,229 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 03:00:13,229 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 03:00:13,229 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 03:00:13,230 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 03:00:13,230 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 03:00:13,230 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 03:00:13,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 03:00:13,230 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 03:00:13,231 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 03:00:13,231 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 03:00:13,231 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 03:00:13,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 03:00:13,232 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 03:00:13,232 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 03:00:13,232 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 03:00:13,232 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5cf588c7d7521936f2238a5a4b8ed55e91050a69daa6016b5b2b4a486ef1b9f8 [2022-07-21 03:00:13,540 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 03:00:13,567 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 03:00:13,570 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 03:00:13,571 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 03:00:13,571 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 03:00:13,573 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/egcd-ll.c [2022-07-21 03:00:13,625 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50ef95955/8d11c509c72b4dfa958d3d13340188a5/FLAG979ae5150 [2022-07-21 03:00:14,052 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 03:00:14,053 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/egcd-ll.c [2022-07-21 03:00:14,059 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50ef95955/8d11c509c72b4dfa958d3d13340188a5/FLAG979ae5150 [2022-07-21 03:00:14,073 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50ef95955/8d11c509c72b4dfa958d3d13340188a5 [2022-07-21 03:00:14,075 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 03:00:14,077 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 03:00:14,079 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 03:00:14,079 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 03:00:14,082 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 03:00:14,083 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:00:14" (1/1) ... [2022-07-21 03:00:14,083 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c8a302d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:00:14, skipping insertion in model container [2022-07-21 03:00:14,084 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:00:14" (1/1) ... [2022-07-21 03:00:14,089 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 03:00:14,103 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 03:00:14,248 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/egcd-ll.c[489,502] [2022-07-21 03:00:14,276 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 03:00:14,283 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 03:00:14,299 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/egcd-ll.c[489,502] [2022-07-21 03:00:14,339 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 03:00:14,351 INFO L208 MainTranslator]: Completed translation [2022-07-21 03:00:14,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:00:14 WrapperNode [2022-07-21 03:00:14,352 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 03:00:14,354 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 03:00:14,354 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 03:00:14,355 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 03:00:14,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:00:14" (1/1) ... [2022-07-21 03:00:14,366 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:00:14" (1/1) ... [2022-07-21 03:00:14,385 INFO L137 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2022-07-21 03:00:14,386 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 03:00:14,387 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 03:00:14,387 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 03:00:14,388 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 03:00:14,394 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:00:14" (1/1) ... [2022-07-21 03:00:14,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:00:14" (1/1) ... [2022-07-21 03:00:14,403 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:00:14" (1/1) ... [2022-07-21 03:00:14,403 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:00:14" (1/1) ... [2022-07-21 03:00:14,408 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:00:14" (1/1) ... [2022-07-21 03:00:14,412 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:00:14" (1/1) ... [2022-07-21 03:00:14,413 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:00:14" (1/1) ... [2022-07-21 03:00:14,414 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 03:00:14,415 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 03:00:14,415 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 03:00:14,415 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 03:00:14,416 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:00:14" (1/1) ... [2022-07-21 03:00:14,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 03:00:14,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:00:14,452 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) [2022-07-21 03:00:14,479 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 [2022-07-21 03:00:14,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 03:00:14,496 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 03:00:14,496 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 03:00:14,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 03:00:14,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 03:00:14,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 03:00:14,497 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-21 03:00:14,497 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-21 03:00:14,557 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 03:00:14,559 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 03:00:14,718 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 03:00:14,723 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 03:00:14,723 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 03:00:14,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:00:14 BoogieIcfgContainer [2022-07-21 03:00:14,725 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 03:00:14,726 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 03:00:14,727 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 03:00:14,729 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 03:00:14,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 03:00:14" (1/3) ... [2022-07-21 03:00:14,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a021b2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:00:14, skipping insertion in model container [2022-07-21 03:00:14,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:00:14" (2/3) ... [2022-07-21 03:00:14,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a021b2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:00:14, skipping insertion in model container [2022-07-21 03:00:14,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:00:14" (3/3) ... [2022-07-21 03:00:14,732 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll.c [2022-07-21 03:00:14,743 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 03:00:14,743 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 03:00:14,778 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 03:00:14,788 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@7e508449, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@98d844a [2022-07-21 03:00:14,789 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 03:00:14,807 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-07-21 03:00:14,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-21 03:00:14,814 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:00:14,815 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:00:14,815 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:00:14,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:00:14,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1991809531, now seen corresponding path program 1 times [2022-07-21 03:00:14,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:00:14,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059091427] [2022-07-21 03:00:14,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:00:14,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:00:14,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:00:14,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 03:00:14,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:00:14,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 03:00:14,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:00:14,996 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 03:00:14,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:00:14,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059091427] [2022-07-21 03:00:14,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059091427] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 03:00:14,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 03:00:14,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 03:00:15,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357450613] [2022-07-21 03:00:15,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 03:00:15,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 03:00:15,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:00:15,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 03:00:15,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 03:00:15,036 INFO L87 Difference]: Start difference. First operand has 29 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 03:00:15,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:00:15,060 INFO L93 Difference]: Finished difference Result 55 states and 87 transitions. [2022-07-21 03:00:15,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 03:00:15,063 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2022-07-21 03:00:15,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:00:15,069 INFO L225 Difference]: With dead ends: 55 [2022-07-21 03:00:15,069 INFO L226 Difference]: Without dead ends: 25 [2022-07-21 03:00:15,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 03:00:15,079 INFO L413 NwaCegarLoop]: 37 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, 37 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 [2022-07-21 03:00:15,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 03:00:15,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-07-21 03:00:15,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-07-21 03:00:15,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-21 03:00:15,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2022-07-21 03:00:15,111 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 18 [2022-07-21 03:00:15,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:00:15,112 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2022-07-21 03:00:15,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 03:00:15,112 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2022-07-21 03:00:15,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-21 03:00:15,114 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:00:15,114 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:00:15,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 03:00:15,115 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:00:15,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:00:15,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1662418947, now seen corresponding path program 1 times [2022-07-21 03:00:15,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:00:15,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684172874] [2022-07-21 03:00:15,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:00:15,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:00:15,143 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 03:00:15,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [415624434] [2022-07-21 03:00:15,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:00:15,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:00:15,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:00:15,146 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) [2022-07-21 03:00:15,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 03:00:15,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:00:15,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 03:00:15,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 03:00:15,333 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 03:00:15,334 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 03:00:15,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:00:15,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684172874] [2022-07-21 03:00:15,335 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 03:00:15,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415624434] [2022-07-21 03:00:15,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415624434] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 03:00:15,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 03:00:15,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 03:00:15,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663974425] [2022-07-21 03:00:15,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 03:00:15,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 03:00:15,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:00:15,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 03:00:15,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 03:00:15,348 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-07-21 03:00:15,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:00:15,448 INFO L93 Difference]: Finished difference Result 41 states and 56 transitions. [2022-07-21 03:00:15,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 03:00:15,450 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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 18 [2022-07-21 03:00:15,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:00:15,451 INFO L225 Difference]: With dead ends: 41 [2022-07-21 03:00:15,452 INFO L226 Difference]: Without dead ends: 39 [2022-07-21 03:00:15,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 03:00:15,453 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 7 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 03:00:15,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 107 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 03:00:15,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-07-21 03:00:15,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2022-07-21 03:00:15,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 19 states have (on average 1.263157894736842) internal successors, (24), 21 states have internal predecessors, (24), 15 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-07-21 03:00:15,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 53 transitions. [2022-07-21 03:00:15,469 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 53 transitions. Word has length 18 [2022-07-21 03:00:15,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:00:15,469 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 53 transitions. [2022-07-21 03:00:15,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-07-21 03:00:15,469 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 53 transitions. [2022-07-21 03:00:15,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-21 03:00:15,470 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:00:15,470 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:00:15,490 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-21 03:00:15,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:00:15,678 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:00:15,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:00:15,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1597795282, now seen corresponding path program 1 times [2022-07-21 03:00:15,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:00:15,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268045743] [2022-07-21 03:00:15,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:00:15,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:00:15,692 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 03:00:15,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [159201394] [2022-07-21 03:00:15,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:00:15,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:00:15,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:00:15,694 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) [2022-07-21 03:00:15,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 03:00:15,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:00:15,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-21 03:00:15,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 03:00:15,862 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 03:00:15,862 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 03:00:15,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:00:15,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268045743] [2022-07-21 03:00:15,870 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 03:00:15,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159201394] [2022-07-21 03:00:15,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159201394] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 03:00:15,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 03:00:15,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 03:00:15,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339056597] [2022-07-21 03:00:15,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 03:00:15,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 03:00:15,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:00:15,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 03:00:15,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-21 03:00:15,882 INFO L87 Difference]: Start difference. First operand 38 states and 53 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-21 03:00:16,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:00:16,034 INFO L93 Difference]: Finished difference Result 45 states and 59 transitions. [2022-07-21 03:00:16,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 03:00:16,035 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2022-07-21 03:00:16,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:00:16,037 INFO L225 Difference]: With dead ends: 45 [2022-07-21 03:00:16,038 INFO L226 Difference]: Without dead ends: 43 [2022-07-21 03:00:16,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-21 03:00:16,041 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 20 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 03:00:16,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 132 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 03:00:16,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-07-21 03:00:16,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2022-07-21 03:00:16,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 24 states have internal predecessors, (27), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-07-21 03:00:16,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 56 transitions. [2022-07-21 03:00:16,058 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 56 transitions. Word has length 23 [2022-07-21 03:00:16,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:00:16,058 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 56 transitions. [2022-07-21 03:00:16,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-21 03:00:16,059 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 56 transitions. [2022-07-21 03:00:16,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-21 03:00:16,060 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:00:16,060 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:00:16,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 03:00:16,267 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,SelfDestructingSolverStorable2 [2022-07-21 03:00:16,268 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:00:16,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:00:16,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1369471651, now seen corresponding path program 1 times [2022-07-21 03:00:16,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:00:16,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462234012] [2022-07-21 03:00:16,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:00:16,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:00:16,291 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 03:00:16,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1806881447] [2022-07-21 03:00:16,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:00:16,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:00:16,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:00:16,297 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) [2022-07-21 03:00:16,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 03:00:16,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:00:16,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-21 03:00:16,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 03:00:16,541 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-21 03:00:16,542 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 03:00:16,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:00:16,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462234012] [2022-07-21 03:00:16,543 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 03:00:16,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806881447] [2022-07-21 03:00:16,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806881447] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 03:00:16,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 03:00:16,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 03:00:16,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490910408] [2022-07-21 03:00:16,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 03:00:16,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 03:00:16,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:00:16,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 03:00:16,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-21 03:00:16,548 INFO L87 Difference]: Start difference. First operand 42 states and 56 transitions. Second operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-21 03:00:16,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:00:16,689 INFO L93 Difference]: Finished difference Result 67 states and 96 transitions. [2022-07-21 03:00:16,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 03:00:16,690 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 28 [2022-07-21 03:00:16,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:00:16,694 INFO L225 Difference]: With dead ends: 67 [2022-07-21 03:00:16,694 INFO L226 Difference]: Without dead ends: 63 [2022-07-21 03:00:16,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-07-21 03:00:16,696 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 30 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 03:00:16,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 132 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 03:00:16,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-07-21 03:00:16,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2022-07-21 03:00:16,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 35 states have internal predecessors, (40), 26 states have call successors, (26), 5 states have call predecessors, (26), 5 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2022-07-21 03:00:16,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 89 transitions. [2022-07-21 03:00:16,716 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 89 transitions. Word has length 28 [2022-07-21 03:00:16,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:00:16,716 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 89 transitions. [2022-07-21 03:00:16,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-21 03:00:16,717 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 89 transitions. [2022-07-21 03:00:16,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-21 03:00:16,718 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:00:16,718 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:00:16,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 03:00:16,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:00:16,928 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:00:16,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:00:16,928 INFO L85 PathProgramCache]: Analyzing trace with hash -2053294720, now seen corresponding path program 1 times [2022-07-21 03:00:16,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:00:16,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557526452] [2022-07-21 03:00:16,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:00:16,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:00:16,942 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 03:00:16,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2046011561] [2022-07-21 03:00:16,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:00:16,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:00:16,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:00:16,952 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) [2022-07-21 03:00:16,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 03:00:16,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:00:16,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 03:00:16,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 03:00:17,016 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-21 03:00:17,017 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 03:00:17,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:00:17,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557526452] [2022-07-21 03:00:17,017 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 03:00:17,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046011561] [2022-07-21 03:00:17,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046011561] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 03:00:17,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 03:00:17,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 03:00:17,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170504136] [2022-07-21 03:00:17,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 03:00:17,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 03:00:17,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:00:17,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 03:00:17,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 03:00:17,020 INFO L87 Difference]: Start difference. First operand 63 states and 89 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-21 03:00:17,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:00:17,056 INFO L93 Difference]: Finished difference Result 69 states and 94 transitions. [2022-07-21 03:00:17,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 03:00:17,057 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 34 [2022-07-21 03:00:17,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:00:17,058 INFO L225 Difference]: With dead ends: 69 [2022-07-21 03:00:17,058 INFO L226 Difference]: Without dead ends: 67 [2022-07-21 03:00:17,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 03:00:17,059 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 5 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 03:00:17,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 103 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 03:00:17,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-07-21 03:00:17,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2022-07-21 03:00:17,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 38 states have internal predecessors, (43), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2022-07-21 03:00:17,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 92 transitions. [2022-07-21 03:00:17,070 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 92 transitions. Word has length 34 [2022-07-21 03:00:17,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:00:17,070 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 92 transitions. [2022-07-21 03:00:17,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-21 03:00:17,071 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 92 transitions. [2022-07-21 03:00:17,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-21 03:00:17,072 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:00:17,072 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:00:17,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 03:00:17,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:00:17,296 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:00:17,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:00:17,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1341957731, now seen corresponding path program 1 times [2022-07-21 03:00:17,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:00:17,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228274701] [2022-07-21 03:00:17,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:00:17,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:00:17,307 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 03:00:17,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1013244736] [2022-07-21 03:00:17,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:00:17,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:00:17,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:00:17,312 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) [2022-07-21 03:00:17,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 03:00:17,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:00:17,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-21 03:00:17,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 03:00:17,435 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-21 03:00:17,435 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 03:00:17,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:00:17,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228274701] [2022-07-21 03:00:17,435 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 03:00:17,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013244736] [2022-07-21 03:00:17,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013244736] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 03:00:17,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 03:00:17,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 03:00:17,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977518915] [2022-07-21 03:00:17,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 03:00:17,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 03:00:17,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:00:17,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 03:00:17,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 03:00:17,446 INFO L87 Difference]: Start difference. First operand 67 states and 92 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 03:00:17,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:00:17,489 INFO L93 Difference]: Finished difference Result 77 states and 100 transitions. [2022-07-21 03:00:17,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 03:00:17,490 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36 [2022-07-21 03:00:17,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:00:17,494 INFO L225 Difference]: With dead ends: 77 [2022-07-21 03:00:17,494 INFO L226 Difference]: Without dead ends: 74 [2022-07-21 03:00:17,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 03:00:17,495 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 6 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 03:00:17,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 108 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 03:00:17,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-07-21 03:00:17,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2022-07-21 03:00:17,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 40 states have (on average 1.225) internal successors, (49), 43 states have internal predecessors, (49), 23 states have call successors, (23), 8 states have call predecessors, (23), 8 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2022-07-21 03:00:17,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 93 transitions. [2022-07-21 03:00:17,523 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 93 transitions. Word has length 36 [2022-07-21 03:00:17,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:00:17,523 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 93 transitions. [2022-07-21 03:00:17,524 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 03:00:17,524 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 93 transitions. [2022-07-21 03:00:17,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-21 03:00:17,526 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:00:17,526 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:00:17,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-21 03:00:17,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:00:17,742 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:00:17,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:00:17,742 INFO L85 PathProgramCache]: Analyzing trace with hash -724890607, now seen corresponding path program 1 times [2022-07-21 03:00:17,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:00:17,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217466960] [2022-07-21 03:00:17,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:00:17,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:00:17,756 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 03:00:17,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [292628690] [2022-07-21 03:00:17,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:00:17,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:00:17,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:00:17,767 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) [2022-07-21 03:00:17,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-21 03:00:17,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:00:17,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-21 03:00:17,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 03:00:17,875 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-21 03:00:17,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 03:00:17,964 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-21 03:00:17,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:00:17,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217466960] [2022-07-21 03:00:17,964 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 03:00:17,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292628690] [2022-07-21 03:00:17,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292628690] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 03:00:17,965 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 03:00:17,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2022-07-21 03:00:17,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615534158] [2022-07-21 03:00:17,965 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 03:00:17,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 03:00:17,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:00:17,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 03:00:17,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-21 03:00:17,966 INFO L87 Difference]: Start difference. First operand 72 states and 93 transitions. Second operand has 9 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-21 03:00:18,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:00:18,105 INFO L93 Difference]: Finished difference Result 81 states and 103 transitions. [2022-07-21 03:00:18,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 03:00:18,105 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 39 [2022-07-21 03:00:18,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:00:18,106 INFO L225 Difference]: With dead ends: 81 [2022-07-21 03:00:18,107 INFO L226 Difference]: Without dead ends: 77 [2022-07-21 03:00:18,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-07-21 03:00:18,108 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 13 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 03:00:18,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 104 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 03:00:18,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-07-21 03:00:18,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2022-07-21 03:00:18,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 44 states have (on average 1.1590909090909092) internal successors, (51), 47 states have internal predecessors, (51), 23 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) [2022-07-21 03:00:18,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 96 transitions. [2022-07-21 03:00:18,131 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 96 transitions. Word has length 39 [2022-07-21 03:00:18,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:00:18,131 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 96 transitions. [2022-07-21 03:00:18,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-21 03:00:18,132 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 96 transitions. [2022-07-21 03:00:18,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-21 03:00:18,136 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:00:18,136 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:00:18,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-21 03:00:18,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:00:18,352 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:00:18,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:00:18,353 INFO L85 PathProgramCache]: Analyzing trace with hash -641684780, now seen corresponding path program 2 times [2022-07-21 03:00:18,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:00:18,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810603371] [2022-07-21 03:00:18,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:00:18,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:00:18,365 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 03:00:18,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1550594943] [2022-07-21 03:00:18,367 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 03:00:18,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:00:18,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:00:18,369 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) [2022-07-21 03:00:18,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-21 03:00:18,413 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 03:00:18,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 03:00:18,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-21 03:00:18,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 03:00:18,543 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-21 03:00:18,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 03:00:18,615 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-21 03:00:18,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:00:18,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810603371] [2022-07-21 03:00:18,617 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 03:00:18,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550594943] [2022-07-21 03:00:18,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550594943] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 03:00:18,617 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 03:00:18,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2022-07-21 03:00:18,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132446164] [2022-07-21 03:00:18,617 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 03:00:18,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 03:00:18,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:00:18,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 03:00:18,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-21 03:00:18,620 INFO L87 Difference]: Start difference. First operand 77 states and 96 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 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) [2022-07-21 03:00:19,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:00:19,242 INFO L93 Difference]: Finished difference Result 103 states and 132 transitions. [2022-07-21 03:00:19,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 03:00:19,243 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 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 41 [2022-07-21 03:00:19,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:00:19,244 INFO L225 Difference]: With dead ends: 103 [2022-07-21 03:00:19,244 INFO L226 Difference]: Without dead ends: 96 [2022-07-21 03:00:19,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-07-21 03:00:19,245 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 11 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 03:00:19,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 109 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 03:00:19,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-07-21 03:00:19,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 81. [2022-07-21 03:00:19,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 50 states have (on average 1.12) internal successors, (56), 52 states have internal predecessors, (56), 19 states have call successors, (19), 11 states have call predecessors, (19), 11 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2022-07-21 03:00:19,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 93 transitions. [2022-07-21 03:00:19,257 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 93 transitions. Word has length 41 [2022-07-21 03:00:19,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:00:19,257 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 93 transitions. [2022-07-21 03:00:19,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 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) [2022-07-21 03:00:19,257 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 93 transitions. [2022-07-21 03:00:19,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-21 03:00:19,258 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:00:19,258 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:00:19,281 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-07-21 03:00:19,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:00:19,480 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:00:19,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:00:19,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1119121909, now seen corresponding path program 1 times [2022-07-21 03:00:19,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:00:19,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267733890] [2022-07-21 03:00:19,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:00:19,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:00:19,493 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 03:00:19,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1269677519] [2022-07-21 03:00:19,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:00:19,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:00:19,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:00:19,495 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) [2022-07-21 03:00:19,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-21 03:00:19,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:00:19,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-21 03:00:19,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 03:00:19,680 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-21 03:00:19,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 03:00:19,780 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-07-21 03:00:19,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:00:19,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267733890] [2022-07-21 03:00:19,780 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 03:00:19,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269677519] [2022-07-21 03:00:19,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269677519] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 03:00:19,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 03:00:19,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2022-07-21 03:00:19,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623941839] [2022-07-21 03:00:19,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 03:00:19,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 03:00:19,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:00:19,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 03:00:19,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-21 03:00:19,783 INFO L87 Difference]: Start difference. First operand 81 states and 93 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 03:00:19,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:00:19,825 INFO L93 Difference]: Finished difference Result 81 states and 93 transitions. [2022-07-21 03:00:19,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 03:00:19,825 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 54 [2022-07-21 03:00:19,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:00:19,826 INFO L225 Difference]: With dead ends: 81 [2022-07-21 03:00:19,826 INFO L226 Difference]: Without dead ends: 0 [2022-07-21 03:00:19,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 97 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-21 03:00:19,827 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 6 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 03:00:19,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 72 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 03:00:19,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-21 03:00:19,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-21 03:00:19,828 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) [2022-07-21 03:00:19,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-21 03:00:19,828 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 54 [2022-07-21 03:00:19,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:00:19,828 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-21 03:00:19,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 03:00:19,828 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-21 03:00:19,828 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-21 03:00:19,831 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-21 03:00:19,854 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-07-21 03:00:20,045 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,SelfDestructingSolverStorable8 [2022-07-21 03:00:20,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-21 03:00:35,444 WARN L233 SmtUtils]: Spent 14.87s on a formula simplification. DAG size of input: 59 DAG size of output: 36 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-07-21 03:00:44,596 WARN L233 SmtUtils]: Spent 8.65s on a formula simplification. DAG size of input: 59 DAG size of output: 36 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-07-21 03:00:58,023 WARN L233 SmtUtils]: Spent 13.04s on a formula simplification. DAG size of input: 57 DAG size of output: 46 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-07-21 03:00:58,297 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-21 03:00:58,298 INFO L895 garLoopResultBuilder]: At program point L33-2(lines 33 50) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= (+ .cse0 |ULTIMATE.start_main_~b~0#1| .cse1) (+ |ULTIMATE.start_main_~a~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (= (+ .cse0 .cse1) |ULTIMATE.start_main_~a~0#1|))) [2022-07-21 03:00:58,298 INFO L902 garLoopResultBuilder]: At program point L56(lines 18 57) the Hoare annotation is: true [2022-07-21 03:00:58,298 INFO L895 garLoopResultBuilder]: At program point L23(line 23) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= |ULTIMATE.start_main_~y~0#1| 2147483647)) [2022-07-21 03:00:58,298 INFO L895 garLoopResultBuilder]: At program point L23-1(line 23) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647)) [2022-07-21 03:00:58,298 INFO L895 garLoopResultBuilder]: At program point L54(line 54) the Hoare annotation is: (let ((.cse0 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse1 (<= |ULTIMATE.start_main_~x~0#1| 2147483647)) (.cse4 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse5 (<= |ULTIMATE.start_main_~y~0#1| 2147483647))) (or (let ((.cse2 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse3 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (and .cse0 .cse1 (= (+ .cse2 |ULTIMATE.start_main_~b~0#1| .cse3) (+ |ULTIMATE.start_main_~a~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) .cse4 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) .cse5 (= (+ .cse2 .cse3) |ULTIMATE.start_main_~a~0#1|))) (and .cse0 .cse1 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) .cse4 .cse5 (= |ULTIMATE.start_main_~s~0#1| 1)))) [2022-07-21 03:00:58,298 INFO L895 garLoopResultBuilder]: At program point L52(line 52) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= (+ .cse0 |ULTIMATE.start_main_~b~0#1| .cse1) (+ |ULTIMATE.start_main_~a~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (= (+ .cse0 .cse1) |ULTIMATE.start_main_~a~0#1|))) [2022-07-21 03:00:58,299 INFO L899 garLoopResultBuilder]: For program point L36(lines 33 50) no Hoare annotation was computed. [2022-07-21 03:00:58,299 INFO L895 garLoopResultBuilder]: At program point L34(line 34) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= (+ .cse0 |ULTIMATE.start_main_~b~0#1| .cse1) (+ |ULTIMATE.start_main_~a~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (= (+ .cse0 .cse1) |ULTIMATE.start_main_~a~0#1|))) [2022-07-21 03:00:58,299 INFO L895 garLoopResultBuilder]: At program point L34-1(line 34) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= (+ .cse0 |ULTIMATE.start_main_~b~0#1| .cse1) (+ |ULTIMATE.start_main_~a~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (= (+ .cse0 .cse1) |ULTIMATE.start_main_~a~0#1|))) [2022-07-21 03:00:58,299 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-21 03:00:58,299 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-21 03:00:58,299 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-21 03:00:58,300 INFO L899 garLoopResultBuilder]: For program point L24(line 24) no Hoare annotation was computed. [2022-07-21 03:00:58,300 INFO L899 garLoopResultBuilder]: For program point L55(line 55) no Hoare annotation was computed. [2022-07-21 03:00:58,300 INFO L895 garLoopResultBuilder]: At program point L53(line 53) the Hoare annotation is: (let ((.cse6 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) (.cse0 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse1 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse2 (<= |ULTIMATE.start_main_~x~0#1| 2147483647)) (.cse3 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse4 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse5 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse7 (<= |ULTIMATE.start_main_~y~0#1| 2147483647)) (.cse8 (= |ULTIMATE.start_main_~s~0#1| 1))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8) (let ((.cse9 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse10 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) .cse1 .cse2 (= (+ .cse9 |ULTIMATE.start_main_~b~0#1| .cse10) (+ |ULTIMATE.start_main_~a~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) .cse5 .cse6 .cse7 (= (+ .cse9 .cse10) |ULTIMATE.start_main_~a~0#1|))) (and .cse0 .cse1 .cse2 .cse3 (= |ULTIMATE.start_main_~r~0#1| 0) .cse4 .cse5 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) .cse7 .cse8))) [2022-07-21 03:00:58,300 INFO L899 garLoopResultBuilder]: For program point L41(lines 41 49) no Hoare annotation was computed. [2022-07-21 03:00:58,300 INFO L895 garLoopResultBuilder]: At program point L41-2(lines 33 50) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= (+ .cse0 |ULTIMATE.start_main_~b~0#1| .cse1) (+ |ULTIMATE.start_main_~a~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (= (+ .cse0 .cse1) |ULTIMATE.start_main_~a~0#1|))) [2022-07-21 03:00:58,300 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= (+ .cse0 |ULTIMATE.start_main_~b~0#1| .cse1) (+ |ULTIMATE.start_main_~a~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (= (+ .cse0 .cse1) |ULTIMATE.start_main_~a~0#1|))) [2022-07-21 03:00:58,301 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 7 9) the Hoare annotation is: true [2022-07-21 03:00:58,301 INFO L899 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2022-07-21 03:00:58,301 INFO L899 garLoopResultBuilder]: For program point L8-2(lines 7 9) no Hoare annotation was computed. [2022-07-21 03:00:58,301 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2022-07-21 03:00:58,301 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 10 16) the Hoare annotation is: true [2022-07-21 03:00:58,301 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2022-07-21 03:00:58,301 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2022-07-21 03:00:58,302 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed. [2022-07-21 03:00:58,302 INFO L899 garLoopResultBuilder]: For program point L11-2(lines 10 16) no Hoare annotation was computed. [2022-07-21 03:00:58,302 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2022-07-21 03:00:58,305 INFO L356 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:00:58,307 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 03:00:58,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 03:00:58 BoogieIcfgContainer [2022-07-21 03:00:58,322 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 03:00:58,323 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 03:00:58,323 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 03:00:58,323 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 03:00:58,324 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:00:14" (3/4) ... [2022-07-21 03:00:58,326 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-21 03:00:58,331 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-07-21 03:00:58,331 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-07-21 03:00:58,336 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-07-21 03:00:58,336 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-21 03:00:58,336 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-21 03:00:58,337 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-21 03:00:58,372 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 03:00:58,372 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 03:00:58,373 INFO L158 Benchmark]: Toolchain (without parser) took 44296.05ms. Allocated memory was 52.4MB in the beginning and 81.8MB in the end (delta: 29.4MB). Free memory was 29.6MB in the beginning and 34.8MB in the end (delta: -5.2MB). Peak memory consumption was 23.2MB. Max. memory is 16.1GB. [2022-07-21 03:00:58,373 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 52.4MB. Free memory was 33.7MB in the beginning and 33.7MB in the end (delta: 37.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 03:00:58,373 INFO L158 Benchmark]: CACSL2BoogieTranslator took 273.43ms. Allocated memory was 52.4MB in the beginning and 67.1MB in the end (delta: 14.7MB). Free memory was 29.4MB in the beginning and 50.5MB in the end (delta: -21.2MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. [2022-07-21 03:00:58,374 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.90ms. Allocated memory is still 67.1MB. Free memory was 50.4MB in the beginning and 48.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 03:00:58,374 INFO L158 Benchmark]: Boogie Preprocessor took 26.80ms. Allocated memory is still 67.1MB. Free memory was 48.8MB in the beginning and 47.9MB in the end (delta: 934.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 03:00:58,374 INFO L158 Benchmark]: RCFGBuilder took 310.33ms. Allocated memory is still 67.1MB. Free memory was 47.7MB in the beginning and 38.0MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-21 03:00:58,375 INFO L158 Benchmark]: TraceAbstraction took 43595.51ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 37.4MB in the beginning and 37.5MB in the end (delta: -78.0kB). Peak memory consumption was 28.5MB. Max. memory is 16.1GB. [2022-07-21 03:00:58,376 INFO L158 Benchmark]: Witness Printer took 49.46ms. Allocated memory is still 81.8MB. Free memory was 37.5MB in the beginning and 34.8MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 03:00:58,377 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 52.4MB. Free memory was 33.7MB in the beginning and 33.7MB in the end (delta: 37.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 273.43ms. Allocated memory was 52.4MB in the beginning and 67.1MB in the end (delta: 14.7MB). Free memory was 29.4MB in the beginning and 50.5MB in the end (delta: -21.2MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.90ms. Allocated memory is still 67.1MB. Free memory was 50.4MB in the beginning and 48.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 26.80ms. Allocated memory is still 67.1MB. Free memory was 48.8MB in the beginning and 47.9MB in the end (delta: 934.6kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 310.33ms. Allocated memory is still 67.1MB. Free memory was 47.7MB in the beginning and 38.0MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 43595.51ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 37.4MB in the beginning and 37.5MB in the end (delta: -78.0kB). Peak memory consumption was 28.5MB. Max. memory is 16.1GB. * Witness Printer took 49.46ms. Allocated memory is still 81.8MB. Free memory was 37.5MB in the beginning and 34.8MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s 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: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 43.5s, OverallIterations: 9, TraceHistogramMax: 7, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 38.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 136 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 98 mSDsluCounter, 904 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 626 mSDsCounter, 75 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 687 IncrementalHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 75 mSolverCounterUnsat, 278 mSDtfsCounter, 687 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 418 GetRequests, 355 SyntacticMatches, 6 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred in iteration=8, InterpolantAutomatonStates: 56, 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, 9 MinimizatonAttempts, 19 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 48 PreInvPairs, 82 NumberOfFragments, 490 HoareAnnotationTreeSize, 48 FomulaSimplifications, 136 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 2041 FormulaSimplificationTreeSizeReductionInter, 38.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 291 NumberOfCodeBlocks, 291 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 413 ConstructedInterpolants, 0 QuantifiedInterpolants, 1429 SizeOfPredicates, 17 NumberOfNonLiveVariables, 799 ConjunctsInSsa, 110 ConjunctsInUnsatCore, 12 InterpolantComputations, 7 PerfectInterpolantSequences, 364/394 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: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: (((((p * s == q * r + 1 && 1 <= y) && x <= 2147483647) && r * y + b + p * x == a + s * y + q * x) && 1 <= x) && y <= 2147483647) && r * y + p * x == a RESULT: Ultimate proved your program to be correct! [2022-07-21 03:00:58,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE