/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/nla-digbench/fermat2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:36:29,501 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:36:29,503 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:36:29,514 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:36:29,515 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:36:29,516 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:36:29,517 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:36:29,519 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:36:29,520 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:36:29,521 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:36:29,522 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:36:29,523 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:36:29,523 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:36:29,524 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:36:29,525 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:36:29,526 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:36:29,527 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:36:29,528 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:36:29,530 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:36:29,531 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:36:29,533 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:36:29,534 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:36:29,535 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:36:29,536 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:36:29,538 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 00:36:29,546 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:36:29,547 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:36:29,547 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:36:29,548 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 00:36:29,562 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:36:29,563 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:36:29,564 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:36:29,564 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:36:29,564 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:36:29,564 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:36:29,565 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:36:29,565 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:36:29,565 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:36:29,565 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:36:29,565 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:36:29,566 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:36:29,566 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:36:29,566 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:36:29,566 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:36:29,566 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:36:29,567 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:36:29,567 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:36:29,567 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:36:29,567 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:36:29,567 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:36:29,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:36:29,568 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:36:29,568 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:36:29,568 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:36:29,569 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:36:29,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:36:29,569 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:36:29,569 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-07 00:36:29,894 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:36:29,916 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:36:29,920 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:36:29,921 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:36:29,921 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:36:29,922 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/fermat2.c [2019-11-07 00:36:29,992 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccf4a22d0/f7f2e8a1e7f842cd83b8e07e948ff856/FLAG4b97e5e1a [2019-11-07 00:36:30,433 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:36:30,434 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/fermat2.c [2019-11-07 00:36:30,441 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccf4a22d0/f7f2e8a1e7f842cd83b8e07e948ff856/FLAG4b97e5e1a [2019-11-07 00:36:30,856 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccf4a22d0/f7f2e8a1e7f842cd83b8e07e948ff856 [2019-11-07 00:36:30,876 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:36:30,881 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:36:30,886 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:36:30,886 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:36:30,892 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:36:30,895 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:36:30" (1/1) ... [2019-11-07 00:36:30,901 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9e92733 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:30, skipping insertion in model container [2019-11-07 00:36:30,901 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:36:30" (1/1) ... [2019-11-07 00:36:30,920 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:36:30,965 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:36:31,152 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:36:31,156 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:36:31,176 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:36:31,190 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:36:31,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:31 WrapperNode [2019-11-07 00:36:31,190 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:36:31,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:36:31,191 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:36:31,191 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:36:31,278 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:31" (1/1) ... [2019-11-07 00:36:31,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:31" (1/1) ... [2019-11-07 00:36:31,284 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:31" (1/1) ... [2019-11-07 00:36:31,285 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:31" (1/1) ... [2019-11-07 00:36:31,290 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:31" (1/1) ... [2019-11-07 00:36:31,295 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:31" (1/1) ... [2019-11-07 00:36:31,296 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:31" (1/1) ... [2019-11-07 00:36:31,297 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:36:31,298 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:36:31,298 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:36:31,298 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:36:31,299 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:36:31,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:36:31,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:36:31,370 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-07 00:36:31,370 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:36:31,370 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:36:31,370 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2019-11-07 00:36:31,371 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-07 00:36:31,371 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-07 00:36:31,371 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:36:31,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:36:31,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:36:31,533 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:36:31,533 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-07 00:36:31,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:36:31 BoogieIcfgContainer [2019-11-07 00:36:31,534 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:36:31,535 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:36:31,536 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:36:31,538 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:36:31,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:36:30" (1/3) ... [2019-11-07 00:36:31,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@209b0374 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:36:31, skipping insertion in model container [2019-11-07 00:36:31,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:31" (2/3) ... [2019-11-07 00:36:31,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@209b0374 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:36:31, skipping insertion in model container [2019-11-07 00:36:31,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:36:31" (3/3) ... [2019-11-07 00:36:31,542 INFO L109 eAbstractionObserver]: Analyzing ICFG fermat2.c [2019-11-07 00:36:31,551 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:36:31,559 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:36:31,571 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:36:31,593 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:36:31,593 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:36:31,594 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:36:31,594 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:36:31,594 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:36:31,594 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:36:31,594 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:36:31,595 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:36:31,611 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-11-07 00:36:31,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-07 00:36:31,616 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:36:31,617 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:36:31,618 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:36:31,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:36:31,623 INFO L82 PathProgramCache]: Analyzing trace with hash -858950785, now seen corresponding path program 1 times [2019-11-07 00:36:31,631 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:36:31,631 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055129366] [2019-11-07 00:36:31,631 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:36:31,694 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-07 00:36:31,694 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1796273412] [2019-11-07 00:36:31,695 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:36:31,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:36:31,746 INFO L256 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-07 00:36:31,752 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:36:31,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:36:31,771 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:36:31,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:36:31,809 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055129366] [2019-11-07 00:36:31,809 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-07 00:36:31,810 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796273412] [2019-11-07 00:36:31,811 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:36:31,811 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-07 00:36:31,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500722989] [2019-11-07 00:36:31,821 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:36:31,824 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:36:31,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:36:31,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:36:31,848 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2019-11-07 00:36:31,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:36:31,877 INFO L93 Difference]: Finished difference Result 37 states and 49 transitions. [2019-11-07 00:36:31,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:36:31,879 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-07 00:36:31,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:36:31,890 INFO L225 Difference]: With dead ends: 37 [2019-11-07 00:36:31,891 INFO L226 Difference]: Without dead ends: 16 [2019-11-07 00:36:31,895 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:36:31,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-07 00:36:31,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-07 00:36:31,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-07 00:36:31,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2019-11-07 00:36:31,954 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2019-11-07 00:36:31,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:36:31,955 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-11-07 00:36:31,955 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:36:31,955 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2019-11-07 00:36:31,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-07 00:36:31,956 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:36:31,956 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:36:32,159 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:36:32,160 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:36:32,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:36:32,161 INFO L82 PathProgramCache]: Analyzing trace with hash -871939661, now seen corresponding path program 1 times [2019-11-07 00:36:32,161 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:36:32,161 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937066761] [2019-11-07 00:36:32,162 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:36:32,171 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-07 00:36:32,171 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1982519245] [2019-11-07 00:36:32,171 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:36:32,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:36:32,231 WARN L254 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-07 00:36:32,233 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:36:32,404 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 25 [2019-11-07 00:36:32,419 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:36:51,040 WARN L191 SmtUtils]: Spent 12.78 s on a formula simplification. DAG size of input: 34 DAG size of output: 3 [2019-11-07 00:36:51,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:36:51,059 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:36:51,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:36:51,572 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937066761] [2019-11-07 00:36:51,572 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-07 00:36:51,572 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982519245] [2019-11-07 00:36:51,573 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:36:51,573 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-11-07 00:36:51,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789656858] [2019-11-07 00:36:51,575 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 00:36:51,575 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:36:51,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 00:36:51,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:36:51,577 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 8 states. [2019-11-07 00:36:56,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:36:56,265 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2019-11-07 00:36:56,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:36:56,265 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2019-11-07 00:36:56,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:36:56,267 INFO L225 Difference]: With dead ends: 32 [2019-11-07 00:36:56,268 INFO L226 Difference]: Without dead ends: 30 [2019-11-07 00:36:56,269 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-11-07 00:36:56,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-07 00:36:56,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 24. [2019-11-07 00:36:56,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-07 00:36:56,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2019-11-07 00:36:56,279 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 10 [2019-11-07 00:36:56,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:36:56,280 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-11-07 00:36:56,280 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-07 00:36:56,283 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2019-11-07 00:36:56,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-07 00:36:56,284 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:36:56,284 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:36:56,488 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:36:56,488 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:36:56,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:36:56,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1067575333, now seen corresponding path program 1 times [2019-11-07 00:36:56,489 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:36:56,489 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577430182] [2019-11-07 00:36:56,489 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:36:56,493 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-07 00:36:56,493 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2118918091] [2019-11-07 00:36:56,493 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:36:56,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:36:56,523 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-07 00:36:56,524 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:36:56,654 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:36:56,696 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:36:56,697 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:36:56,790 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:36:56,810 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:36:56,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:36:56,850 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577430182] [2019-11-07 00:36:56,850 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-07 00:36:56,850 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118918091] [2019-11-07 00:36:56,851 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1523767945] [2019-11-07 00:36:56,857 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 17 [2019-11-07 00:36:56,893 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-07 00:36:56,894 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-11-07 00:36:56,974 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-11-07 00:36:58,116 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-11-07 00:36:58,120 INFO L272 AbstractInterpreter]: Visited 15 different actions 20 times. Never merged. Never widened. Performed 30 root evaluator evaluations with a maximum evaluation depth of 14. Performed 30 inverse root evaluator evaluations with a maximum inverse evaluation depth of 14. Never found a fixpoint. Largest state had 7 variables. [2019-11-07 00:36:58,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:36:58,127 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-07 00:36:58,130 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:36:58,131 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 13 [2019-11-07 00:36:58,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81006976] [2019-11-07 00:36:58,132 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-07 00:36:58,132 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:36:58,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-07 00:36:58,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2019-11-07 00:36:58,134 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 13 states. [2019-11-07 00:36:58,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:36:58,324 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2019-11-07 00:36:58,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:36:58,326 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 16 [2019-11-07 00:36:58,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:36:58,327 INFO L225 Difference]: With dead ends: 24 [2019-11-07 00:36:58,327 INFO L226 Difference]: Without dead ends: 0 [2019-11-07 00:36:58,328 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2019-11-07 00:36:58,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-07 00:36:58,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-07 00:36:58,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-07 00:36:58,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-07 00:36:58,330 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2019-11-07 00:36:58,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:36:58,330 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-07 00:36:58,330 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-07 00:36:58,330 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-07 00:36:58,331 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-07 00:36:58,534 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:36:58,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-07 00:36:58,607 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-11-07 00:36:58,607 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-07 00:36:58,607 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-07 00:36:58,607 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-07 00:36:58,608 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-07 00:36:58,608 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-07 00:36:58,608 INFO L439 ceAbstractionStarter]: At program point L29(line 29) the Hoare annotation is: (and (exists ((main_~R~0 Int)) (< (let ((.cse0 (+ main_~R~0 (- 1)))) (* .cse0 .cse0)) main_~A~0)) (= (+ (* main_~v~0 main_~v~0) (* 4 main_~A~0) (* 4 main_~r~0) (* 2 main_~u~0)) (+ (* 2 main_~v~0) (* main_~u~0 main_~u~0)))) [2019-11-07 00:36:58,608 INFO L443 ceAbstractionStarter]: For program point L29-1(lines 28 39) no Hoare annotation was computed. [2019-11-07 00:36:58,608 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 14 44) no Hoare annotation was computed. [2019-11-07 00:36:58,608 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 14 44) no Hoare annotation was computed. [2019-11-07 00:36:58,609 INFO L443 ceAbstractionStarter]: For program point L42(line 42) no Hoare annotation was computed. [2019-11-07 00:36:58,609 INFO L443 ceAbstractionStarter]: For program point L32(lines 32 38) no Hoare annotation was computed. [2019-11-07 00:36:58,609 INFO L439 ceAbstractionStarter]: At program point L32-2(lines 28 39) the Hoare annotation is: (and (exists ((main_~R~0 Int)) (< (let ((.cse0 (+ main_~R~0 (- 1)))) (* .cse0 .cse0)) main_~A~0)) (= (+ (* main_~v~0 main_~v~0) (* 4 main_~A~0) (* 4 main_~r~0) (* 2 main_~u~0)) (+ (* 2 main_~v~0) (* main_~u~0 main_~u~0)))) [2019-11-07 00:36:58,609 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 14 44) the Hoare annotation is: true [2019-11-07 00:36:58,609 INFO L439 ceAbstractionStarter]: At program point L28-2(lines 28 39) the Hoare annotation is: (let ((.cse1 (* main_~v~0 main_~v~0)) (.cse2 (* 4 main_~A~0)) (.cse3 (* 2 main_~u~0)) (.cse4 (+ (* 2 main_~v~0) (* main_~u~0 main_~u~0)))) (and (exists ((main_~R~0 Int)) (< (let ((.cse0 (+ main_~R~0 (- 1)))) (* .cse0 .cse0)) main_~A~0)) (= (+ .cse1 .cse2 .cse3) .cse4) (= (+ .cse1 .cse2 (* 4 main_~r~0) .cse3) .cse4))) [2019-11-07 00:36:58,610 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 6 12) the Hoare annotation is: true [2019-11-07 00:36:58,610 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 6 12) no Hoare annotation was computed. [2019-11-07 00:36:58,610 INFO L443 ceAbstractionStarter]: For program point L8(lines 8 9) no Hoare annotation was computed. [2019-11-07 00:36:58,610 INFO L443 ceAbstractionStarter]: For program point L7(lines 7 10) no Hoare annotation was computed. [2019-11-07 00:36:58,610 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2019-11-07 00:36:58,610 INFO L443 ceAbstractionStarter]: For program point L7-2(lines 6 12) no Hoare annotation was computed. [2019-11-07 00:36:58,614 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2019-11-07 00:36:58,615 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2019-11-07 00:36:58,622 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2019-11-07 00:36:58,622 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2019-11-07 00:36:58,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:36:58 BoogieIcfgContainer [2019-11-07 00:36:58,625 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-07 00:36:58,627 INFO L168 Benchmark]: Toolchain (without parser) took 27745.94 ms. Allocated memory was 134.7 MB in the beginning and 255.9 MB in the end (delta: 121.1 MB). Free memory was 99.8 MB in the beginning and 97.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 123.7 MB. Max. memory is 7.1 GB. [2019-11-07 00:36:58,628 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 134.7 MB. Free memory was 117.9 MB in the beginning and 117.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-07 00:36:58,629 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.80 ms. Allocated memory is still 134.7 MB. Free memory was 99.3 MB in the beginning and 89.3 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2019-11-07 00:36:58,630 INFO L168 Benchmark]: Boogie Preprocessor took 106.24 ms. Allocated memory was 134.7 MB in the beginning and 198.2 MB in the end (delta: 63.4 MB). Free memory was 89.3 MB in the beginning and 176.3 MB in the end (delta: -87.0 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2019-11-07 00:36:58,631 INFO L168 Benchmark]: RCFGBuilder took 236.78 ms. Allocated memory is still 198.2 MB. Free memory was 176.3 MB in the beginning and 164.3 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. [2019-11-07 00:36:58,632 INFO L168 Benchmark]: TraceAbstraction took 27089.55 ms. Allocated memory was 198.2 MB in the beginning and 255.9 MB in the end (delta: 57.7 MB). Free memory was 163.6 MB in the beginning and 97.2 MB in the end (delta: 66.4 MB). Peak memory consumption was 124.1 MB. Max. memory is 7.1 GB. [2019-11-07 00:36:58,636 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 134.7 MB. Free memory was 117.9 MB in the beginning and 117.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 304.80 ms. Allocated memory is still 134.7 MB. Free memory was 99.3 MB in the beginning and 89.3 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 106.24 ms. Allocated memory was 134.7 MB in the beginning and 198.2 MB in the end (delta: 63.4 MB). Free memory was 89.3 MB in the beginning and 176.3 MB in the end (delta: -87.0 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 236.78 ms. Allocated memory is still 198.2 MB. Free memory was 176.3 MB in the beginning and 164.3 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 27089.55 ms. Allocated memory was 198.2 MB in the beginning and 255.9 MB in the end (delta: 57.7 MB). Free memory was 163.6 MB in the beginning and 97.2 MB in the end (delta: 66.4 MB). Peak memory consumption was 124.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant [2019-11-07 00:36:58,644 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2019-11-07 00:36:58,644 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2019-11-07 00:36:58,644 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2019-11-07 00:36:58,645 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] Derived loop invariant: (\exists main_~R~0 : int :: (main_~R~0 + -1) * (main_~R~0 + -1) < A) && v * v + 4 * A + 4 * r + 2 * u == 2 * v + u * u - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. Result: SAFE, OverallTime: 27.0s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 4.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 44 SDtfs, 29 SDslu, 95 SDs, 0 SdLazy, 83 SolverSat, 14 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 4.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 15.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=2, 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, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 12 PreInvPairs, 17 NumberOfFragments, 119 HoareAnnotationTreeSize, 12 FomulaSimplifications, 214 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 19.7s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 66 ConstructedInterpolants, 4 QuantifiedInterpolants, 4347 SizeOfPredicates, 11 NumberOfNonLiveVariables, 95 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 2/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...