./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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/fermat1-ll_valuebound1.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 92e6df76ce1206795a3a206ec7de3a20b30db31ab661efba7e1901708b9ce34a --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 12:13:53,433 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 12:13:53,435 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 12:13:53,460 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 12:13:53,461 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 12:13:53,462 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 12:13:53,463 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 12:13:53,464 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 12:13:53,465 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 12:13:53,466 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 12:13:53,467 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 12:13:53,468 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 12:13:53,468 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 12:13:53,469 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 12:13:53,470 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 12:13:53,471 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 12:13:53,472 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 12:13:53,473 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 12:13:53,474 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 12:13:53,476 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 12:13:53,477 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 12:13:53,478 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 12:13:53,478 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 12:13:53,479 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 12:13:53,481 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 12:13:53,482 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 12:13:53,482 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 12:13:53,482 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 12:13:53,483 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 12:13:53,491 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 12:13:53,492 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 12:13:53,492 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 12:13:53,493 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 12:13:53,494 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 12:13:53,494 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 12:13:53,495 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 12:13:53,495 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 12:13:53,496 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 12:13:53,496 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 12:13:53,497 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 12:13:53,497 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 12:13:53,500 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 12:13:53,533 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 12:13:53,533 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 12:13:53,534 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 12:13:53,534 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 12:13:53,535 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 12:13:53,535 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 12:13:53,536 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 12:13:53,536 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 12:13:53,536 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 12:13:53,536 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 12:13:53,537 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 12:13:53,544 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 12:13:53,545 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 12:13:53,545 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 12:13:53,545 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 12:13:53,545 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 12:13:53,545 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 12:13:53,546 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 12:13:53,546 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 12:13:53,546 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 12:13:53,546 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 12:13:53,546 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 12:13:53,547 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 12:13:53,547 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 12:13:53,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 12:13:53,547 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 12:13:53,547 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 12:13:53,548 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 12:13:53,549 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 12:13:53,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 12:13:53,549 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 12:13:53,549 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 12:13:53,549 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 12:13:53,549 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 12:13:53,550 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 92e6df76ce1206795a3a206ec7de3a20b30db31ab661efba7e1901708b9ce34a [2021-12-17 12:13:53,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 12:13:53,821 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 12:13:53,823 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 12:13:53,824 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 12:13:53,825 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 12:13:53,825 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound1.c [2021-12-17 12:13:53,882 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4eb1afb1/2b1b95bdbff1468095ead0171b6eae5d/FLAG5adccc2fa [2021-12-17 12:13:54,260 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 12:13:54,260 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound1.c [2021-12-17 12:13:54,277 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4eb1afb1/2b1b95bdbff1468095ead0171b6eae5d/FLAG5adccc2fa [2021-12-17 12:13:54,287 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4eb1afb1/2b1b95bdbff1468095ead0171b6eae5d [2021-12-17 12:13:54,289 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 12:13:54,290 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 12:13:54,295 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 12:13:54,297 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 12:13:54,299 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 12:13:54,300 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 12:13:54" (1/1) ... [2021-12-17 12:13:54,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@246ba44b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:13:54, skipping insertion in model container [2021-12-17 12:13:54,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 12:13:54" (1/1) ... [2021-12-17 12:13:54,307 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 12:13:54,324 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 12:13:54,430 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/fermat1-ll_valuebound1.c[535,548] [2021-12-17 12:13:54,445 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 12:13:54,451 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 12:13:54,461 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/fermat1-ll_valuebound1.c[535,548] [2021-12-17 12:13:54,469 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 12:13:54,479 INFO L208 MainTranslator]: Completed translation [2021-12-17 12:13:54,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:13:54 WrapperNode [2021-12-17 12:13:54,480 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 12:13:54,481 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 12:13:54,481 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 12:13:54,481 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 12:13:54,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:13:54" (1/1) ... [2021-12-17 12:13:54,500 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:13:54" (1/1) ... [2021-12-17 12:13:54,520 INFO L137 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2021-12-17 12:13:54,521 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 12:13:54,521 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 12:13:54,521 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 12:13:54,521 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 12:13:54,527 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:13:54" (1/1) ... [2021-12-17 12:13:54,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:13:54" (1/1) ... [2021-12-17 12:13:54,528 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:13:54" (1/1) ... [2021-12-17 12:13:54,529 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:13:54" (1/1) ... [2021-12-17 12:13:54,531 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:13:54" (1/1) ... [2021-12-17 12:13:54,534 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:13:54" (1/1) ... [2021-12-17 12:13:54,535 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:13:54" (1/1) ... [2021-12-17 12:13:54,544 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 12:13:54,547 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 12:13:54,547 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 12:13:54,548 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 12:13:54,548 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:13:54" (1/1) ... [2021-12-17 12:13:54,554 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 12:13:54,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 12:13:54,576 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) [2021-12-17 12:13:54,587 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 [2021-12-17 12:13:54,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 12:13:54,609 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-17 12:13:54,609 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-17 12:13:54,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 12:13:54,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 12:13:54,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 12:13:54,610 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-17 12:13:54,610 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-17 12:13:54,656 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 12:13:54,657 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 12:13:54,743 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 12:13:54,747 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 12:13:54,748 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-17 12:13:54,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 12:13:54 BoogieIcfgContainer [2021-12-17 12:13:54,749 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 12:13:54,750 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 12:13:54,751 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 12:13:54,754 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 12:13:54,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 12:13:54" (1/3) ... [2021-12-17 12:13:54,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fd7146f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 12:13:54, skipping insertion in model container [2021-12-17 12:13:54,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:13:54" (2/3) ... [2021-12-17 12:13:54,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fd7146f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 12:13:54, skipping insertion in model container [2021-12-17 12:13:54,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 12:13:54" (3/3) ... [2021-12-17 12:13:54,756 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat1-ll_valuebound1.c [2021-12-17 12:13:54,760 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 12:13:54,761 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 12:13:54,797 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 12:13:54,802 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 [2021-12-17 12:13:54,803 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 12:13:54,815 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 20 states have (on average 1.6) internal successors, (32), 21 states have internal predecessors, (32), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-17 12:13:54,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-17 12:13:54,820 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 12:13:54,820 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] [2021-12-17 12:13:54,821 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 12:13:54,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 12:13:54,825 INFO L85 PathProgramCache]: Analyzing trace with hash -2017412251, now seen corresponding path program 1 times [2021-12-17 12:13:54,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 12:13:54,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999526235] [2021-12-17 12:13:54,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 12:13:54,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 12:13:54,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 12:13:54,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 12:13:54,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 12:13:54,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 12:13:54,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 12:13:54,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 12:13:54,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 12:13:54,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 12:13:54,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 12:13:54,975 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-17 12:13:54,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 12:13:54,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999526235] [2021-12-17 12:13:54,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999526235] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 12:13:54,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 12:13:54,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 12:13:54,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421685036] [2021-12-17 12:13:54,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 12:13:54,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-17 12:13:54,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 12:13:55,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-17 12:13:55,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 12:13:55,006 INFO L87 Difference]: Start difference. First operand has 32 states, 20 states have (on average 1.6) internal successors, (32), 21 states have internal predecessors, (32), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) 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), 2 states have call successors, (4) [2021-12-17 12:13:55,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 12:13:55,036 INFO L93 Difference]: Finished difference Result 61 states and 100 transitions. [2021-12-17 12:13:55,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-17 12:13:55,044 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), 2 states have call successors, (4) Word has length 29 [2021-12-17 12:13:55,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 12:13:55,050 INFO L225 Difference]: With dead ends: 61 [2021-12-17 12:13:55,050 INFO L226 Difference]: Without dead ends: 28 [2021-12-17 12:13:55,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 12:13:55,057 INFO L933 BasicCegarLoop]: 40 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, 40 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 [2021-12-17 12:13:55,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 12:13:55,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-12-17 12:13:55,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-12-17 12:13:55,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-17 12:13:55,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2021-12-17 12:13:55,095 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 29 [2021-12-17 12:13:55,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 12:13:55,096 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2021-12-17 12:13:55,096 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), 2 states have call successors, (4) [2021-12-17 12:13:55,096 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2021-12-17 12:13:55,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-17 12:13:55,098 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 12:13:55,098 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] [2021-12-17 12:13:55,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 12:13:55,098 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 12:13:55,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 12:13:55,099 INFO L85 PathProgramCache]: Analyzing trace with hash 398101033, now seen corresponding path program 1 times [2021-12-17 12:13:55,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 12:13:55,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827869961] [2021-12-17 12:13:55,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 12:13:55,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 12:13:55,151 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 12:13:55,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1483633604] [2021-12-17 12:13:55,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 12:13:55,152 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 12:13:55,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 12:13:55,159 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) [2021-12-17 12:13:55,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-17 12:13:55,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 12:13:55,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-17 12:13:55,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 12:13:55,624 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-17 12:13:55,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 12:13:55,797 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-17 12:13:55,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 12:13:55,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827869961] [2021-12-17 12:13:55,799 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 12:13:55,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483633604] [2021-12-17 12:13:55,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483633604] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-17 12:13:55,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 12:13:55,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 11 [2021-12-17 12:13:55,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491517717] [2021-12-17 12:13:55,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 12:13:55,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 12:13:55,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 12:13:55,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 12:13:55,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-12-17 12:13:55,814 INFO L87 Difference]: Start difference. First operand 28 states and 36 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) [2021-12-17 12:13:56,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 12:13:56,008 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2021-12-17 12:13:56,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 12:13:56,008 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 [2021-12-17 12:13:56,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 12:13:56,009 INFO L225 Difference]: With dead ends: 34 [2021-12-17 12:13:56,009 INFO L226 Difference]: Without dead ends: 30 [2021-12-17 12:13:56,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-12-17 12:13:56,011 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 11 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 12:13:56,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 91 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 12:13:56,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-12-17 12:13:56,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-12-17 12:13:56,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 8 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-17 12:13:56,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2021-12-17 12:13:56,019 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 29 [2021-12-17 12:13:56,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 12:13:56,020 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2021-12-17 12:13:56,020 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) [2021-12-17 12:13:56,020 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2021-12-17 12:13:56,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-17 12:13:56,021 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 12:13:56,021 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, 1] [2021-12-17 12:13:56,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-17 12:13:56,222 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 [2021-12-17 12:13:56,222 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 12:13:56,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 12:13:56,223 INFO L85 PathProgramCache]: Analyzing trace with hash 744651016, now seen corresponding path program 1 times [2021-12-17 12:13:56,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 12:13:56,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437688928] [2021-12-17 12:13:56,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 12:13:56,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 12:13:56,232 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 12:13:56,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1392929719] [2021-12-17 12:13:56,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 12:13:56,233 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 12:13:56,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 12:13:56,234 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) [2021-12-17 12:13:56,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-17 12:13:56,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 12:13:56,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-17 12:13:56,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 12:13:56,409 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-17 12:13:56,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 12:13:56,566 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-17 12:13:56,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 12:13:56,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437688928] [2021-12-17 12:13:56,566 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 12:13:56,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392929719] [2021-12-17 12:13:56,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392929719] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 12:13:56,567 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 12:13:56,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-12-17 12:13:56,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420761625] [2021-12-17 12:13:56,567 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 12:13:56,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 12:13:56,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 12:13:56,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 12:13:56,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-12-17 12:13:56,569 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-17 12:13:56,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 12:13:56,656 INFO L93 Difference]: Finished difference Result 30 states and 37 transitions. [2021-12-17 12:13:56,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 12:13:56,657 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 35 [2021-12-17 12:13:56,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 12:13:56,658 INFO L225 Difference]: With dead ends: 30 [2021-12-17 12:13:56,658 INFO L226 Difference]: Without dead ends: 0 [2021-12-17 12:13:56,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 58 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-12-17 12:13:56,659 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 24 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 12:13:56,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 102 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 12:13:56,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-17 12:13:56,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-17 12:13:56,661 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) [2021-12-17 12:13:56,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-17 12:13:56,661 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2021-12-17 12:13:56,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 12:13:56,661 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-17 12:13:56,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-17 12:13:56,662 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-17 12:13:56,662 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-17 12:13:56,664 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-17 12:13:56,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-17 12:13:56,879 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 [2021-12-17 12:13:56,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-17 12:13:56,911 INFO L854 garLoopResultBuilder]: At program point L35-2(lines 35 55) the Hoare annotation is: (let ((.cse0 (* 4 |ULTIMATE.start_main_~A~0#1|)) (.cse1 (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|)) (.cse2 (* 2 |ULTIMATE.start_main_~u~0#1|)) (.cse3 (+ (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|) (* 2 |ULTIMATE.start_main_~v~0#1|)))) (and (= (+ .cse0 .cse1 (* 4 |ULTIMATE.start_main_~r~0#1|) .cse2) .cse3) (= (+ .cse0 .cse1 .cse2) .cse3))) [2021-12-17 12:13:56,912 INFO L861 garLoopResultBuilder]: At program point L23(line 23) the Hoare annotation is: true [2021-12-17 12:13:56,912 INFO L858 garLoopResultBuilder]: For program point L23-1(line 23) no Hoare annotation was computed. [2021-12-17 12:13:56,912 INFO L858 garLoopResultBuilder]: For program point L48-1(lines 35 55) no Hoare annotation was computed. [2021-12-17 12:13:56,912 INFO L854 garLoopResultBuilder]: At program point L48-2(lines 35 55) the Hoare annotation is: (= (+ (* 4 |ULTIMATE.start_main_~A~0#1|) (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|) (* 4 |ULTIMATE.start_main_~r~0#1|) (* 2 |ULTIMATE.start_main_~u~0#1|)) (+ (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|) (* 2 |ULTIMATE.start_main_~v~0#1|))) [2021-12-17 12:13:56,912 INFO L854 garLoopResultBuilder]: At program point L40-2(lines 40 46) the Hoare annotation is: (= (+ (* 4 |ULTIMATE.start_main_~A~0#1|) (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|) (* 4 |ULTIMATE.start_main_~r~0#1|) (* 2 |ULTIMATE.start_main_~u~0#1|)) (+ (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|) (* 2 |ULTIMATE.start_main_~v~0#1|))) [2021-12-17 12:13:56,913 INFO L854 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (= (+ (* 4 |ULTIMATE.start_main_~A~0#1|) (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|) (* 4 |ULTIMATE.start_main_~r~0#1|) (* 2 |ULTIMATE.start_main_~u~0#1|)) (+ (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|) (* 2 |ULTIMATE.start_main_~v~0#1|))) [2021-12-17 12:13:56,913 INFO L858 garLoopResultBuilder]: For program point L36-1(lines 35 55) no Hoare annotation was computed. [2021-12-17 12:13:56,913 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-17 12:13:56,913 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-17 12:13:56,915 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-17 12:13:56,916 INFO L858 garLoopResultBuilder]: For program point L28(line 28) no Hoare annotation was computed. [2021-12-17 12:13:56,918 INFO L858 garLoopResultBuilder]: For program point L57(line 57) no Hoare annotation was computed. [2021-12-17 12:13:56,919 INFO L854 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (= (+ (* 4 |ULTIMATE.start_main_~A~0#1|) (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|) (* 4 |ULTIMATE.start_main_~r~0#1|) (* 2 |ULTIMATE.start_main_~u~0#1|)) (+ (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|) (* 2 |ULTIMATE.start_main_~v~0#1|))) [2021-12-17 12:13:56,919 INFO L858 garLoopResultBuilder]: For program point L49-1(lines 48 54) no Hoare annotation was computed. [2021-12-17 12:13:56,919 INFO L854 garLoopResultBuilder]: At program point L41(line 41) the Hoare annotation is: (= (+ (* 4 |ULTIMATE.start_main_~A~0#1|) (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|) (* 4 |ULTIMATE.start_main_~r~0#1|) (* 2 |ULTIMATE.start_main_~u~0#1|)) (+ (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|) (* 2 |ULTIMATE.start_main_~v~0#1|))) [2021-12-17 12:13:56,920 INFO L858 garLoopResultBuilder]: For program point L41-1(lines 40 46) no Hoare annotation was computed. [2021-12-17 12:13:56,920 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-17 12:13:56,920 INFO L861 garLoopResultBuilder]: At program point L58(lines 19 59) the Hoare annotation is: true [2021-12-17 12:13:56,921 INFO L861 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: true [2021-12-17 12:13:56,921 INFO L861 garLoopResultBuilder]: At program point L25-1(line 25) the Hoare annotation is: true [2021-12-17 12:13:56,921 INFO L861 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: true [2021-12-17 12:13:56,921 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 8 10) the Hoare annotation is: true [2021-12-17 12:13:56,921 INFO L858 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2021-12-17 12:13:56,922 INFO L858 garLoopResultBuilder]: For program point L9-2(lines 8 10) no Hoare annotation was computed. [2021-12-17 12:13:56,922 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 8 10) no Hoare annotation was computed. [2021-12-17 12:13:56,922 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 11 17) the Hoare annotation is: true [2021-12-17 12:13:56,922 INFO L858 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-12-17 12:13:56,924 INFO L858 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-12-17 12:13:56,924 INFO L858 garLoopResultBuilder]: For program point L12-2(lines 11 17) no Hoare annotation was computed. [2021-12-17 12:13:56,924 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 11 17) no Hoare annotation was computed. [2021-12-17 12:13:56,924 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-12-17 12:13:56,927 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-12-17 12:13:56,928 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-17 12:13:56,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 12:13:56 BoogieIcfgContainer [2021-12-17 12:13:56,942 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-17 12:13:56,946 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-17 12:13:56,946 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-17 12:13:56,947 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-17 12:13:56,947 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 12:13:54" (3/4) ... [2021-12-17 12:13:56,949 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-17 12:13:56,955 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2021-12-17 12:13:56,958 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-12-17 12:13:56,963 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-12-17 12:13:56,963 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-17 12:13:56,964 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-17 12:13:56,964 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-17 12:13:56,989 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-17 12:13:56,990 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-17 12:13:56,990 INFO L158 Benchmark]: Toolchain (without parser) took 2700.24ms. Allocated memory is still 104.9MB. Free memory was 83.7MB in the beginning and 36.0MB in the end (delta: 47.7MB). Peak memory consumption was 47.1MB. Max. memory is 16.1GB. [2021-12-17 12:13:56,991 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 83.9MB. Free memory is still 60.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 12:13:56,991 INFO L158 Benchmark]: CACSL2BoogieTranslator took 184.75ms. Allocated memory is still 104.9MB. Free memory was 83.7MB in the beginning and 73.2MB in the end (delta: 10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-17 12:13:56,991 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.97ms. Allocated memory is still 104.9MB. Free memory was 73.2MB in the beginning and 71.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 12:13:56,991 INFO L158 Benchmark]: Boogie Preprocessor took 22.71ms. Allocated memory is still 104.9MB. Free memory was 71.9MB in the beginning and 70.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 12:13:56,992 INFO L158 Benchmark]: RCFGBuilder took 201.98ms. Allocated memory is still 104.9MB. Free memory was 70.7MB in the beginning and 60.7MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-17 12:13:56,992 INFO L158 Benchmark]: TraceAbstraction took 2191.98ms. Allocated memory is still 104.9MB. Free memory was 60.3MB in the beginning and 38.8MB in the end (delta: 21.5MB). Peak memory consumption was 24.0MB. Max. memory is 16.1GB. [2021-12-17 12:13:56,992 INFO L158 Benchmark]: Witness Printer took 43.87ms. Allocated memory is still 104.9MB. Free memory was 38.8MB in the beginning and 36.0MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 12:13:56,994 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 83.9MB. Free memory is still 60.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 184.75ms. Allocated memory is still 104.9MB. Free memory was 83.7MB in the beginning and 73.2MB in the end (delta: 10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.97ms. Allocated memory is still 104.9MB. Free memory was 73.2MB in the beginning and 71.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.71ms. Allocated memory is still 104.9MB. Free memory was 71.9MB in the beginning and 70.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 201.98ms. Allocated memory is still 104.9MB. Free memory was 70.7MB in the beginning and 60.7MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2191.98ms. Allocated memory is still 104.9MB. Free memory was 60.3MB in the beginning and 38.8MB in the end (delta: 21.5MB). Peak memory consumption was 24.0MB. Max. memory is 16.1GB. * Witness Printer took 43.87ms. Allocated memory is still 104.9MB. Free memory was 38.8MB in the beginning and 36.0MB in the end (delta: 2.8MB). 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: 14]: 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: 2.1s, OverallIterations: 3, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 40 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 35 mSDsluCounter, 233 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 145 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 91 IncrementalHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 88 mSDtfsCounter, 91 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 141 GetRequests, 118 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 26 PreInvPairs, 36 NumberOfFragments, 152 HoareAnnotationTreeSize, 26 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 93 NumberOfCodeBlocks, 93 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 152 ConstructedInterpolants, 0 QuantifiedInterpolants, 503 SizeOfPredicates, 12 NumberOfNonLiveVariables, 177 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 113/124 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: 4 * A + v * v + 4 * r + 2 * u == u * u + 2 * v - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: 4 * A + v * v + 4 * r + 2 * u == u * u + 2 * v - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-12-17 12:13:57,011 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