./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound20.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 20f9ce6814caacb533e5bf2143ac3e067387f11238548a0b9b41e2de8e2cc436 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 12:34:17,244 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 12:34:17,251 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 12:34:17,295 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 12:34:17,296 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 12:34:17,299 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 12:34:17,301 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 12:34:17,305 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 12:34:17,307 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 12:34:17,324 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 12:34:17,324 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 12:34:17,325 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 12:34:17,325 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 12:34:17,326 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 12:34:17,327 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 12:34:17,327 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 12:34:17,328 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 12:34:17,328 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 12:34:17,329 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 12:34:17,330 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 12:34:17,331 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 12:34:17,334 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 12:34:17,334 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 12:34:17,335 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 12:34:17,337 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 12:34:17,341 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 12:34:17,342 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 12:34:17,343 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 12:34:17,343 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 12:34:17,343 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 12:34:17,344 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 12:34:17,344 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 12:34:17,345 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 12:34:17,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 12:34:17,346 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 12:34:17,347 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 12:34:17,347 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 12:34:17,348 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 12:34:17,348 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 12:34:17,349 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 12:34:17,350 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 12:34:17,351 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 12:34:17,375 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 12:34:17,375 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 12:34:17,376 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 12:34:17,376 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 12:34:17,377 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 12:34:17,377 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 12:34:17,377 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 12:34:17,378 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 12:34:17,378 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 12:34:17,378 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 12:34:17,379 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 12:34:17,379 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 12:34:17,379 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 12:34:17,379 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 12:34:17,379 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 12:34:17,379 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 12:34:17,379 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 12:34:17,380 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 12:34:17,380 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 12:34:17,380 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 12:34:17,380 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 12:34:17,380 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 12:34:17,380 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 12:34:17,380 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 12:34:17,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 12:34:17,381 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 12:34:17,381 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 12:34:17,381 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 12:34:17,381 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 12:34:17,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 12:34:17,381 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 12:34:17,382 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 12:34:17,382 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 12:34:17,382 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 12:34:17,382 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 20f9ce6814caacb533e5bf2143ac3e067387f11238548a0b9b41e2de8e2cc436 [2021-12-21 12:34:17,545 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 12:34:17,561 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 12:34:17,563 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 12:34:17,563 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 12:34:17,564 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 12:34:17,565 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound20.c [2021-12-21 12:34:17,610 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4e0b803f/34e774293fde426e931e08f1d70caa19/FLAG3d24b388c [2021-12-21 12:34:17,938 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 12:34:17,939 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound20.c [2021-12-21 12:34:17,948 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4e0b803f/34e774293fde426e931e08f1d70caa19/FLAG3d24b388c [2021-12-21 12:34:18,340 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4e0b803f/34e774293fde426e931e08f1d70caa19 [2021-12-21 12:34:18,342 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 12:34:18,343 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 12:34:18,344 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 12:34:18,345 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 12:34:18,347 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 12:34:18,348 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:34:18" (1/1) ... [2021-12-21 12:34:18,349 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@360e810c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:34:18, skipping insertion in model container [2021-12-21 12:34:18,349 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:34:18" (1/1) ... [2021-12-21 12:34:18,354 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 12:34:18,363 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 12:34:18,495 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound20.c[489,502] [2021-12-21 12:34:18,506 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 12:34:18,524 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 12:34:18,532 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound20.c[489,502] [2021-12-21 12:34:18,537 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 12:34:18,546 INFO L208 MainTranslator]: Completed translation [2021-12-21 12:34:18,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:34:18 WrapperNode [2021-12-21 12:34:18,546 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 12:34:18,547 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 12:34:18,547 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 12:34:18,548 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 12:34:18,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:34:18" (1/1) ... [2021-12-21 12:34:18,557 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:34:18" (1/1) ... [2021-12-21 12:34:18,568 INFO L137 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2021-12-21 12:34:18,568 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 12:34:18,569 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 12:34:18,569 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 12:34:18,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 12:34:18,574 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:34:18" (1/1) ... [2021-12-21 12:34:18,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:34:18" (1/1) ... [2021-12-21 12:34:18,575 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:34:18" (1/1) ... [2021-12-21 12:34:18,577 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:34:18" (1/1) ... [2021-12-21 12:34:18,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:34:18" (1/1) ... [2021-12-21 12:34:18,581 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:34:18" (1/1) ... [2021-12-21 12:34:18,582 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:34:18" (1/1) ... [2021-12-21 12:34:18,583 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 12:34:18,583 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 12:34:18,584 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 12:34:18,584 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 12:34:18,584 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:34:18" (1/1) ... [2021-12-21 12:34:18,589 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 12:34:18,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:34:18,605 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 12:34:18,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 12:34:18,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 12:34:18,630 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-21 12:34:18,630 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-21 12:34:18,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 12:34:18,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 12:34:18,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 12:34:18,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-21 12:34:18,631 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-21 12:34:18,668 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 12:34:18,669 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 12:34:18,753 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 12:34:18,757 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 12:34:18,758 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 12:34:18,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:34:18 BoogieIcfgContainer [2021-12-21 12:34:18,759 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 12:34:18,760 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 12:34:18,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 12:34:18,762 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 12:34:18,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 12:34:18" (1/3) ... [2021-12-21 12:34:18,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e58920 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:34:18, skipping insertion in model container [2021-12-21 12:34:18,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:34:18" (2/3) ... [2021-12-21 12:34:18,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e58920 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:34:18, skipping insertion in model container [2021-12-21 12:34:18,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:34:18" (3/3) ... [2021-12-21 12:34:18,765 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll_valuebound20.c [2021-12-21 12:34:18,768 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 12:34:18,768 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 12:34:18,833 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 12:34:18,837 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 12:34:18,845 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 12:34:18,868 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-21 12:34:18,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-21 12:34:18,872 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:34:18,872 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:34:18,873 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:34:18,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:34:18,877 INFO L85 PathProgramCache]: Analyzing trace with hash 516392259, now seen corresponding path program 1 times [2021-12-21 12:34:18,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:34:18,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583543108] [2021-12-21 12:34:18,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:34:18,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:34:18,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:34:19,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 12:34:19,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:34:19,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 12:34:19,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:34:19,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 12:34:19,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:34:19,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 12:34:19,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:34:19,102 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-21 12:34:19,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:34:19,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583543108] [2021-12-21 12:34:19,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583543108] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:34:19,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:34:19,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 12:34:19,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323397821] [2021-12-21 12:34:19,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:34:19,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 12:34:19,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:34:19,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 12:34:19,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 12:34:19,134 INFO L87 Difference]: Start difference. First operand has 32 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-21 12:34:19,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:34:19,155 INFO L93 Difference]: Finished difference Result 61 states and 99 transitions. [2021-12-21 12:34:19,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 12:34:19,157 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2021-12-21 12:34:19,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:34:19,161 INFO L225 Difference]: With dead ends: 61 [2021-12-21 12:34:19,162 INFO L226 Difference]: Without dead ends: 28 [2021-12-21 12:34:19,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 12:34:19,169 INFO L933 BasicCegarLoop]: 42 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, 42 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 [2021-12-21 12:34:19,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 12:34:19,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-12-21 12:34:19,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-12-21 12:34:19,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-21 12:34:19,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2021-12-21 12:34:19,201 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 29 [2021-12-21 12:34:19,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:34:19,203 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2021-12-21 12:34:19,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-21 12:34:19,203 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2021-12-21 12:34:19,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-21 12:34:19,206 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:34:19,206 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:34:19,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 12:34:19,207 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:34:19,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:34:19,214 INFO L85 PathProgramCache]: Analyzing trace with hash 501437177, now seen corresponding path program 1 times [2021-12-21 12:34:19,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:34:19,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561922060] [2021-12-21 12:34:19,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:34:19,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:34:19,235 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 12:34:19,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1155787340] [2021-12-21 12:34:19,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:34:19,238 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:34:19,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:34:19,244 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 12:34:19,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 12:34:19,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:34:19,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-21 12:34:19,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:34:19,464 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-21 12:34:19,464 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:34:19,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:34:19,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561922060] [2021-12-21 12:34:19,465 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 12:34:19,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155787340] [2021-12-21 12:34:19,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155787340] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:34:19,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:34:19,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 12:34:19,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023826751] [2021-12-21 12:34:19,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:34:19,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 12:34:19,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:34:19,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 12:34:19,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 12:34:19,469 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-21 12:34:19,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:34:19,511 INFO L93 Difference]: Finished difference Result 44 states and 61 transitions. [2021-12-21 12:34:19,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 12:34:19,512 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2021-12-21 12:34:19,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:34:19,513 INFO L225 Difference]: With dead ends: 44 [2021-12-21 12:34:19,513 INFO L226 Difference]: Without dead ends: 42 [2021-12-21 12:34:19,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-21 12:34:19,514 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 7 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 12:34:19,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 139 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 12:34:19,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-12-21 12:34:19,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2021-12-21 12:34:19,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 20 states have (on average 1.25) internal successors, (25), 22 states have internal predecessors, (25), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2021-12-21 12:34:19,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 58 transitions. [2021-12-21 12:34:19,523 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 58 transitions. Word has length 29 [2021-12-21 12:34:19,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:34:19,523 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 58 transitions. [2021-12-21 12:34:19,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-21 12:34:19,524 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 58 transitions. [2021-12-21 12:34:19,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-21 12:34:19,524 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:34:19,524 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:34:19,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-21 12:34:19,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:34:19,743 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:34:19,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:34:19,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1017640517, now seen corresponding path program 1 times [2021-12-21 12:34:19,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:34:19,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371035272] [2021-12-21 12:34:19,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:34:19,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:34:19,754 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 12:34:19,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1731213350] [2021-12-21 12:34:19,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:34:19,754 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:34:19,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:34:19,756 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 12:34:19,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-21 12:34:19,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:34:19,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-21 12:34:19,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:34:19,942 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-21 12:34:19,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 12:34:20,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:34:20,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371035272] [2021-12-21 12:34:20,028 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 12:34:20,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731213350] [2021-12-21 12:34:20,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731213350] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:34:20,028 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:34:20,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-12-21 12:34:20,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776709837] [2021-12-21 12:34:20,029 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-21 12:34:20,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 12:34:20,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:34:20,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 12:34:20,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-21 12:34:20,030 INFO L87 Difference]: Start difference. First operand 41 states and 58 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-21 12:34:20,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:34:20,143 INFO L93 Difference]: Finished difference Result 66 states and 98 transitions. [2021-12-21 12:34:20,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 12:34:20,144 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 34 [2021-12-21 12:34:20,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:34:20,148 INFO L225 Difference]: With dead ends: 66 [2021-12-21 12:34:20,148 INFO L226 Difference]: Without dead ends: 64 [2021-12-21 12:34:20,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-21 12:34:20,152 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 17 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 12:34:20,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 188 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 12:34:20,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-12-21 12:34:20,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 57. [2021-12-21 12:34:20,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 31 states have internal predecessors, (38), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-21 12:34:20,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 83 transitions. [2021-12-21 12:34:20,172 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 83 transitions. Word has length 34 [2021-12-21 12:34:20,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:34:20,172 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 83 transitions. [2021-12-21 12:34:20,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-21 12:34:20,173 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 83 transitions. [2021-12-21 12:34:20,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-21 12:34:20,173 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:34:20,173 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:34:20,190 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-21 12:34:20,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-21 12:34:20,383 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:34:20,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:34:20,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1133401081, now seen corresponding path program 1 times [2021-12-21 12:34:20,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:34:20,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911810431] [2021-12-21 12:34:20,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:34:20,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:34:20,417 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 12:34:20,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [973997981] [2021-12-21 12:34:20,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:34:20,422 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:34:20,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:34:20,437 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 12:34:20,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-21 12:34:20,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:34:20,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-21 12:34:20,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:34:20,602 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-21 12:34:20,603 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:34:20,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:34:20,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911810431] [2021-12-21 12:34:20,603 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 12:34:20,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973997981] [2021-12-21 12:34:20,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973997981] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:34:20,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:34:20,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 12:34:20,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052735696] [2021-12-21 12:34:20,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:34:20,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 12:34:20,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:34:20,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 12:34:20,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 12:34:20,605 INFO L87 Difference]: Start difference. First operand 57 states and 83 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-21 12:34:20,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:34:20,639 INFO L93 Difference]: Finished difference Result 64 states and 89 transitions. [2021-12-21 12:34:20,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 12:34:20,639 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 39 [2021-12-21 12:34:20,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:34:20,640 INFO L225 Difference]: With dead ends: 64 [2021-12-21 12:34:20,640 INFO L226 Difference]: Without dead ends: 60 [2021-12-21 12:34:20,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-21 12:34:20,641 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 8 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 12:34:20,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 139 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 12:34:20,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-12-21 12:34:20,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-12-21 12:34:20,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 32 states have (on average 1.28125) internal successors, (41), 34 states have internal predecessors, (41), 22 states have call successors, (22), 5 states have call predecessors, (22), 5 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-12-21 12:34:20,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 83 transitions. [2021-12-21 12:34:20,649 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 83 transitions. Word has length 39 [2021-12-21 12:34:20,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:34:20,649 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 83 transitions. [2021-12-21 12:34:20,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-21 12:34:20,650 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 83 transitions. [2021-12-21 12:34:20,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-21 12:34:20,651 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:34:20,651 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:34:20,674 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-21 12:34:20,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:34:20,869 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:34:20,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:34:20,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1954831506, now seen corresponding path program 1 times [2021-12-21 12:34:20,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:34:20,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249871311] [2021-12-21 12:34:20,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:34:20,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:34:20,881 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 12:34:20,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2087115274] [2021-12-21 12:34:20,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:34:20,883 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:34:20,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:34:20,894 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 12:34:20,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-21 12:34:20,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:34:20,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-21 12:34:20,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:34:20,986 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-21 12:34:20,986 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:34:20,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:34:20,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249871311] [2021-12-21 12:34:20,987 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 12:34:20,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087115274] [2021-12-21 12:34:20,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087115274] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:34:20,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:34:20,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 12:34:20,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921970180] [2021-12-21 12:34:20,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:34:20,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 12:34:20,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:34:20,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 12:34:20,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 12:34:20,989 INFO L87 Difference]: Start difference. First operand 60 states and 83 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-21 12:34:21,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:34:21,018 INFO L93 Difference]: Finished difference Result 66 states and 88 transitions. [2021-12-21 12:34:21,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 12:34:21,018 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 45 [2021-12-21 12:34:21,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:34:21,019 INFO L225 Difference]: With dead ends: 66 [2021-12-21 12:34:21,019 INFO L226 Difference]: Without dead ends: 64 [2021-12-21 12:34:21,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-21 12:34:21,020 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 5 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 12:34:21,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 131 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 12:34:21,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-12-21 12:34:21,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-12-21 12:34:21,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 37 states have internal predecessors, (44), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-12-21 12:34:21,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 86 transitions. [2021-12-21 12:34:21,029 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 86 transitions. Word has length 45 [2021-12-21 12:34:21,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:34:21,029 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 86 transitions. [2021-12-21 12:34:21,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-21 12:34:21,029 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 86 transitions. [2021-12-21 12:34:21,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-21 12:34:21,030 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:34:21,032 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:34:21,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-21 12:34:21,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:34:21,258 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:34:21,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:34:21,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1265228631, now seen corresponding path program 1 times [2021-12-21 12:34:21,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:34:21,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711376900] [2021-12-21 12:34:21,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:34:21,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:34:21,267 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 12:34:21,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [114883248] [2021-12-21 12:34:21,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:34:21,269 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:34:21,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:34:21,270 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 12:34:21,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-21 12:34:21,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:34:21,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-21 12:34:21,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:34:21,427 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-21 12:34:21,427 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:34:21,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:34:21,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711376900] [2021-12-21 12:34:21,428 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 12:34:21,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114883248] [2021-12-21 12:34:21,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114883248] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:34:21,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:34:21,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 12:34:21,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752281762] [2021-12-21 12:34:21,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:34:21,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 12:34:21,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:34:21,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 12:34:21,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 12:34:21,430 INFO L87 Difference]: Start difference. First operand 64 states and 86 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, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-21 12:34:21,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:34:21,469 INFO L93 Difference]: Finished difference Result 80 states and 104 transitions. [2021-12-21 12:34:21,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 12:34:21,470 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, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 47 [2021-12-21 12:34:21,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:34:21,471 INFO L225 Difference]: With dead ends: 80 [2021-12-21 12:34:21,471 INFO L226 Difference]: Without dead ends: 78 [2021-12-21 12:34:21,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-21 12:34:21,473 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 6 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 12:34:21,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 139 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 12:34:21,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-12-21 12:34:21,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 75. [2021-12-21 12:34:21,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 44 states have internal predecessors, (50), 25 states have call successors, (25), 8 states have call predecessors, (25), 8 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2021-12-21 12:34:21,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 98 transitions. [2021-12-21 12:34:21,482 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 98 transitions. Word has length 47 [2021-12-21 12:34:21,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:34:21,482 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 98 transitions. [2021-12-21 12:34:21,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-21 12:34:21,483 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 98 transitions. [2021-12-21 12:34:21,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-21 12:34:21,484 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:34:21,484 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:34:21,504 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-21 12:34:21,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:34:21,702 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:34:21,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:34:21,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1617953190, now seen corresponding path program 1 times [2021-12-21 12:34:21,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:34:21,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221021668] [2021-12-21 12:34:21,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:34:21,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:34:21,712 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 12:34:21,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1180753443] [2021-12-21 12:34:21,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:34:21,712 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:34:21,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:34:21,718 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 12:34:21,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-21 12:34:21,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:34:21,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-21 12:34:21,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:34:21,875 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-12-21 12:34:21,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 12:34:22,005 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-12-21 12:34:22,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:34:22,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221021668] [2021-12-21 12:34:22,006 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 12:34:22,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180753443] [2021-12-21 12:34:22,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180753443] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 12:34:22,007 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 12:34:22,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-12-21 12:34:22,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187983749] [2021-12-21 12:34:22,007 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 12:34:22,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 12:34:22,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:34:22,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 12:34:22,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-21 12:34:22,008 INFO L87 Difference]: Start difference. First operand 75 states and 98 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-21 12:34:22,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:34:22,121 INFO L93 Difference]: Finished difference Result 84 states and 108 transitions. [2021-12-21 12:34:22,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 12:34:22,122 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 50 [2021-12-21 12:34:22,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:34:22,122 INFO L225 Difference]: With dead ends: 84 [2021-12-21 12:34:22,123 INFO L226 Difference]: Without dead ends: 80 [2021-12-21 12:34:22,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-12-21 12:34:22,123 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 13 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 12:34:22,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 167 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 12:34:22,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-12-21 12:34:22,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-12-21 12:34:22,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 48 states have internal predecessors, (52), 25 states have call successors, (25), 9 states have call predecessors, (25), 9 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2021-12-21 12:34:22,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 101 transitions. [2021-12-21 12:34:22,132 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 101 transitions. Word has length 50 [2021-12-21 12:34:22,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:34:22,132 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 101 transitions. [2021-12-21 12:34:22,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-21 12:34:22,133 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 101 transitions. [2021-12-21 12:34:22,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-21 12:34:22,134 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:34:22,134 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:34:22,151 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-21 12:34:22,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:34:22,351 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:34:22,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:34:22,352 INFO L85 PathProgramCache]: Analyzing trace with hash 860577929, now seen corresponding path program 1 times [2021-12-21 12:34:22,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:34:22,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417380649] [2021-12-21 12:34:22,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:34:22,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:34:22,360 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 12:34:22,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1364493861] [2021-12-21 12:34:22,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:34:22,360 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:34:22,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:34:22,361 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) [2021-12-21 12:34:22,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-21 12:34:22,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:34:22,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-21 12:34:22,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:34:22,630 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-12-21 12:34:22,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 12:34:22,811 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-12-21 12:34:22,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:34:22,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417380649] [2021-12-21 12:34:22,812 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 12:34:22,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364493861] [2021-12-21 12:34:22,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364493861] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 12:34:22,812 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 12:34:22,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 12 [2021-12-21 12:34:22,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294281542] [2021-12-21 12:34:22,812 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 12:34:22,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-21 12:34:22,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:34:22,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-21 12:34:22,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-12-21 12:34:22,814 INFO L87 Difference]: Start difference. First operand 80 states and 101 transitions. Second operand has 12 states, 12 states have (on average 2.25) internal successors, (27), 11 states have internal predecessors, (27), 5 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2021-12-21 12:34:23,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:34:23,526 INFO L93 Difference]: Finished difference Result 106 states and 137 transitions. [2021-12-21 12:34:23,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 12:34:23,527 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 11 states have internal predecessors, (27), 5 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) Word has length 52 [2021-12-21 12:34:23,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:34:23,528 INFO L225 Difference]: With dead ends: 106 [2021-12-21 12:34:23,528 INFO L226 Difference]: Without dead ends: 99 [2021-12-21 12:34:23,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 90 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-12-21 12:34:23,529 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 21 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-21 12:34:23,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 230 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-21 12:34:23,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-12-21 12:34:23,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 84. [2021-12-21 12:34:23,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 53 states have internal predecessors, (57), 21 states have call successors, (21), 11 states have call predecessors, (21), 11 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2021-12-21 12:34:23,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 98 transitions. [2021-12-21 12:34:23,539 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 98 transitions. Word has length 52 [2021-12-21 12:34:23,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:34:23,539 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 98 transitions. [2021-12-21 12:34:23,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 11 states have internal predecessors, (27), 5 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2021-12-21 12:34:23,540 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 98 transitions. [2021-12-21 12:34:23,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-21 12:34:23,540 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:34:23,541 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:34:23,558 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-21 12:34:23,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:34:23,758 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:34:23,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:34:23,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1236716699, now seen corresponding path program 1 times [2021-12-21 12:34:23,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:34:23,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719460542] [2021-12-21 12:34:23,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:34:23,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:34:23,766 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 12:34:23,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [320181507] [2021-12-21 12:34:23,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:34:23,766 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:34:23,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:34:23,767 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) [2021-12-21 12:34:23,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-21 12:34:23,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:34:23,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-21 12:34:23,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:34:24,031 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-21 12:34:24,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 12:34:24,155 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-12-21 12:34:24,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:34:24,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719460542] [2021-12-21 12:34:24,156 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 12:34:24,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320181507] [2021-12-21 12:34:24,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320181507] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-21 12:34:24,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:34:24,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2021-12-21 12:34:24,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500782855] [2021-12-21 12:34:24,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:34:24,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 12:34:24,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:34:24,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 12:34:24,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-21 12:34:24,158 INFO L87 Difference]: Start difference. First operand 84 states and 98 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-21 12:34:24,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:34:24,191 INFO L93 Difference]: Finished difference Result 84 states and 98 transitions. [2021-12-21 12:34:24,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 12:34:24,191 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2021-12-21 12:34:24,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:34:24,192 INFO L225 Difference]: With dead ends: 84 [2021-12-21 12:34:24,192 INFO L226 Difference]: Without dead ends: 0 [2021-12-21 12:34:24,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 119 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-12-21 12:34:24,193 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 6 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 12:34:24,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 102 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 12:34:24,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-21 12:34:24,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-21 12:34:24,194 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) [2021-12-21 12:34:24,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-21 12:34:24,194 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 65 [2021-12-21 12:34:24,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:34:24,194 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-21 12:34:24,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-21 12:34:24,194 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-21 12:34:24,195 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-21 12:34:24,196 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-21 12:34:24,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-21 12:34:24,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-12-21 12:34:24,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-21 12:34:26,493 INFO L854 garLoopResultBuilder]: At program point L35-2(lines 35 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)) (= (+ .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|) (= (+ .cse0 .cse1) |ULTIMATE.start_main_~a~0#1|))) [2021-12-21 12:34:26,493 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-21 12:34:26,493 INFO L861 garLoopResultBuilder]: At program point L58(lines 18 59) the Hoare annotation is: true [2021-12-21 12:34:26,493 INFO L854 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (<= 1 |ULTIMATE.start_main_~x~0#1|) [2021-12-21 12:34:26,493 INFO L854 garLoopResultBuilder]: At program point L56(line 56) the Hoare annotation is: (let ((.cse0 (<= 1 |ULTIMATE.start_main_~x~0#1|))) (or (and (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) .cse0 (= |ULTIMATE.start_main_~s~0#1| 1)) (let ((.cse1 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse2 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (= (+ .cse1 |ULTIMATE.start_main_~b~0#1| .cse2) (+ |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|))) .cse0 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) (= (+ .cse1 .cse2) |ULTIMATE.start_main_~a~0#1|))))) [2021-12-21 12:34:26,493 INFO L854 garLoopResultBuilder]: At program point L54(line 54) 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)) (= (+ .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|) (= (+ .cse0 .cse1) |ULTIMATE.start_main_~a~0#1|))) [2021-12-21 12:34:26,493 INFO L858 garLoopResultBuilder]: For program point L38(lines 35 52) no Hoare annotation was computed. [2021-12-21 12:34:26,493 INFO L854 garLoopResultBuilder]: At program point L36(line 36) 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)) (= (+ .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|) (= (+ .cse0 .cse1) |ULTIMATE.start_main_~a~0#1|))) [2021-12-21 12:34:26,493 INFO L854 garLoopResultBuilder]: At program point L36-1(line 36) 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)) (= (+ .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|) (= (+ .cse0 .cse1) |ULTIMATE.start_main_~a~0#1|))) [2021-12-21 12:34:26,493 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-21 12:34:26,494 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-21 12:34:26,494 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-21 12:34:26,494 INFO L858 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2021-12-21 12:34:26,494 INFO L858 garLoopResultBuilder]: For program point L57(line 57) no Hoare annotation was computed. [2021-12-21 12:34:26,494 INFO L861 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: true [2021-12-21 12:34:26,494 INFO L861 garLoopResultBuilder]: At program point L24-1(line 24) the Hoare annotation is: true [2021-12-21 12:34:26,494 INFO L854 garLoopResultBuilder]: At program point L55(line 55) the Hoare annotation is: (let ((.cse2 (<= 1 |ULTIMATE.start_main_~x~0#1|))) (or (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)) (= (+ .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|))) .cse2 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) (= (+ .cse0 .cse1) |ULTIMATE.start_main_~a~0#1|))) (and (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) .cse2 (= |ULTIMATE.start_main_~s~0#1| 1)))) [2021-12-21 12:34:26,494 INFO L861 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: true [2021-12-21 12:34:26,494 INFO L858 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2021-12-21 12:34:26,494 INFO L858 garLoopResultBuilder]: For program point L43(lines 43 51) no Hoare annotation was computed. [2021-12-21 12:34:26,494 INFO L854 garLoopResultBuilder]: At program point L43-2(lines 35 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)) (= (+ .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|) (= (+ .cse0 .cse1) |ULTIMATE.start_main_~a~0#1|))) [2021-12-21 12:34:26,494 INFO L854 garLoopResultBuilder]: At program point L37(line 37) 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)) (= (+ .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|) (= (+ .cse0 .cse1) |ULTIMATE.start_main_~a~0#1|))) [2021-12-21 12:34:26,494 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 7 9) the Hoare annotation is: true [2021-12-21 12:34:26,494 INFO L858 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2021-12-21 12:34:26,494 INFO L858 garLoopResultBuilder]: For program point L8-2(lines 7 9) no Hoare annotation was computed. [2021-12-21 12:34:26,494 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2021-12-21 12:34:26,494 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 10 16) the Hoare annotation is: true [2021-12-21 12:34:26,494 INFO L858 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2021-12-21 12:34:26,494 INFO L858 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2021-12-21 12:34:26,495 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed. [2021-12-21 12:34:26,495 INFO L858 garLoopResultBuilder]: For program point L11-2(lines 10 16) no Hoare annotation was computed. [2021-12-21 12:34:26,495 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-12-21 12:34:26,497 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:34:26,498 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-21 12:34:26,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 12:34:26 BoogieIcfgContainer [2021-12-21 12:34:26,520 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-21 12:34:26,521 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-21 12:34:26,521 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-21 12:34:26,521 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-21 12:34:26,522 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:34:18" (3/4) ... [2021-12-21 12:34:26,524 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-21 12:34:26,527 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2021-12-21 12:34:26,528 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-12-21 12:34:26,531 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-12-21 12:34:26,532 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-21 12:34:26,532 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-21 12:34:26,532 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-21 12:34:26,560 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-21 12:34:26,560 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-21 12:34:26,561 INFO L158 Benchmark]: Toolchain (without parser) took 8217.86ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 66.9MB in the beginning and 96.5MB in the end (delta: -29.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 12:34:26,561 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 104.9MB. Free memory is still 83.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 12:34:26,561 INFO L158 Benchmark]: CACSL2BoogieTranslator took 202.27ms. Allocated memory is still 104.9MB. Free memory was 66.7MB in the beginning and 79.4MB in the end (delta: -12.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-21 12:34:26,562 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.28ms. Allocated memory is still 104.9MB. Free memory was 79.4MB in the beginning and 77.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 12:34:26,562 INFO L158 Benchmark]: Boogie Preprocessor took 13.92ms. Allocated memory is still 104.9MB. Free memory was 77.9MB in the beginning and 76.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 12:34:26,562 INFO L158 Benchmark]: RCFGBuilder took 175.61ms. Allocated memory is still 104.9MB. Free memory was 76.7MB in the beginning and 66.9MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-21 12:34:26,563 INFO L158 Benchmark]: TraceAbstraction took 7760.11ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 66.2MB in the beginning and 99.6MB in the end (delta: -33.4MB). Peak memory consumption was 57.1MB. Max. memory is 16.1GB. [2021-12-21 12:34:26,563 INFO L158 Benchmark]: Witness Printer took 39.53ms. Allocated memory is still 125.8MB. Free memory was 99.6MB in the beginning and 96.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 12:34:26,564 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 104.9MB. Free memory is still 83.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 202.27ms. Allocated memory is still 104.9MB. Free memory was 66.7MB in the beginning and 79.4MB in the end (delta: -12.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.28ms. Allocated memory is still 104.9MB. Free memory was 79.4MB in the beginning and 77.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 13.92ms. Allocated memory is still 104.9MB. Free memory was 77.9MB in the beginning and 76.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 175.61ms. Allocated memory is still 104.9MB. Free memory was 76.7MB in the beginning and 66.9MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 7760.11ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 66.2MB in the beginning and 99.6MB in the end (delta: -33.4MB). Peak memory consumption was 57.1MB. Max. memory is 16.1GB. * Witness Printer took 39.53ms. Allocated memory is still 125.8MB. Free memory was 99.6MB in the beginning and 96.5MB in the end (delta: 3.1MB). 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, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.7s, OverallIterations: 9, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 113 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 83 mSDsluCounter, 1277 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 960 mSDsCounter, 75 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 548 IncrementalHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 75 mSolverCounterUnsat, 317 mSDtfsCounter, 548 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 546 GetRequests, 482 SyntacticMatches, 8 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=84occurred in iteration=8, InterpolantAutomatonStates: 52, 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, 26 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 53 PreInvPairs, 88 NumberOfFragments, 355 HoareAnnotationTreeSize, 53 FomulaSimplifications, 392 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 15 FomulaSimplificationsInter, 1774 FormulaSimplificationTreeSizeReductionInter, 2.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 390 NumberOfCodeBlocks, 390 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 545 ConstructedInterpolants, 0 QuantifiedInterpolants, 1562 SizeOfPredicates, 16 NumberOfNonLiveVariables, 959 ConjunctsInSsa, 105 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 596/634 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: 35]: Loop Invariant Derived loop invariant: ((p * s == q * r + 1 && r * y + b + p * x == a + s * y + q * x) && 1 <= x) && r * y + p * x == a - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-12-21 12:34:26,591 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