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 -i ../../../trunk/examples/svcomp/nla-digbench/fermat2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:17:11,112 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:17:11,114 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:17:11,132 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:17:11,132 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:17:11,134 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:17:11,136 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:17:11,146 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:17:11,149 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:17:11,152 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:17:11,154 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:17:11,155 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:17:11,156 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:17:11,157 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:17:11,160 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:17:11,161 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:17:11,162 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:17:11,164 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:17:11,165 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:17:11,169 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:17:11,173 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:17:11,176 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:17:11,178 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:17:11,179 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:17:11,181 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 23:17:11,185 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:17:11,186 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:17:11,187 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:17:11,188 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:17:11,189 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:17:11,189 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:17:11,190 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:17:11,190 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:17:11,190 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:17:11,191 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:17:11,192 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:17:11,193 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 [2019-10-14 23:17:11,210 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:17:11,210 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:17:11,212 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:17:11,212 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:17:11,213 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:17:11,213 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:17:11,213 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:17:11,213 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:17:11,213 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:17:11,213 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:17:11,214 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:17:11,215 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:17:11,215 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:17:11,215 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:17:11,215 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:17:11,216 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:17:11,216 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:17:11,216 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:17:11,216 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:17:11,216 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:17:11,216 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:17:11,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:17:11,217 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:17:11,217 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:17:11,217 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:17:11,217 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:17:11,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:17:11,218 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:17:11,218 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:17:11,523 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:17:11,535 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:17:11,538 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:17:11,540 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:17:11,540 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:17:11,541 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/fermat2.c [2019-10-14 23:17:11,607 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b480a2dab/46465433fe344042ae63b9338f78b2ec/FLAG43e1e9f4e [2019-10-14 23:17:12,053 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:17:12,054 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/fermat2.c [2019-10-14 23:17:12,060 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b480a2dab/46465433fe344042ae63b9338f78b2ec/FLAG43e1e9f4e [2019-10-14 23:17:12,487 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b480a2dab/46465433fe344042ae63b9338f78b2ec [2019-10-14 23:17:12,497 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:17:12,499 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:17:12,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:17:12,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:17:12,503 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:17:12,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:17:12" (1/1) ... [2019-10-14 23:17:12,507 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b8b9bbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:12, skipping insertion in model container [2019-10-14 23:17:12,507 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:17:12" (1/1) ... [2019-10-14 23:17:12,514 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:17:12,536 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:17:12,721 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:17:12,725 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:17:12,757 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:17:12,772 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:17:12,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:12 WrapperNode [2019-10-14 23:17:12,774 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:17:12,775 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:17:12,775 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:17:12,775 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:17:12,862 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:12" (1/1) ... [2019-10-14 23:17:12,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:12" (1/1) ... [2019-10-14 23:17:12,868 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:12" (1/1) ... [2019-10-14 23:17:12,868 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:12" (1/1) ... [2019-10-14 23:17:12,873 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:12" (1/1) ... [2019-10-14 23:17:12,878 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:12" (1/1) ... [2019-10-14 23:17:12,879 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:12" (1/1) ... [2019-10-14 23:17:12,880 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:17:12,881 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:17:12,881 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:17:12,881 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:17:12,882 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:12" (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 [2019-10-14 23:17:12,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:17:12,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:17:12,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-14 23:17:12,928 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:17:12,928 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:17:12,928 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2019-10-14 23:17:12,928 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-14 23:17:12,928 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-14 23:17:12,928 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:17:12,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:17:12,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:17:13,103 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:17:13,109 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 23:17:13,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:17:13 BoogieIcfgContainer [2019-10-14 23:17:13,111 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:17:13,112 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:17:13,112 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:17:13,117 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:17:13,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:17:12" (1/3) ... [2019-10-14 23:17:13,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a84cc6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:17:13, skipping insertion in model container [2019-10-14 23:17:13,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:12" (2/3) ... [2019-10-14 23:17:13,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a84cc6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:17:13, skipping insertion in model container [2019-10-14 23:17:13,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:17:13" (3/3) ... [2019-10-14 23:17:13,121 INFO L109 eAbstractionObserver]: Analyzing ICFG fermat2.c [2019-10-14 23:17:13,132 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:17:13,143 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:17:13,181 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:17:13,238 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:17:13,239 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:17:13,239 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:17:13,239 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:17:13,239 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:17:13,239 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:17:13,239 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:17:13,240 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:17:13,254 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-10-14 23:17:13,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-14 23:17:13,258 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:17:13,259 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:17:13,260 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:17:13,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:17:13,265 INFO L82 PathProgramCache]: Analyzing trace with hash -858950785, now seen corresponding path program 1 times [2019-10-14 23:17:13,271 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:17:13,271 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772888626] [2019-10-14 23:17:13,272 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:13,272 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:13,272 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:17:13,326 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-14 23:17:13,327 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1324221672] [2019-10-14 23:17:13,327 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 [2019-10-14 23:17:13,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:17:13,371 INFO L256 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-14 23:17:13,377 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:17:13,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:17:13,392 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772888626] [2019-10-14 23:17:13,392 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-14 23:17:13,392 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324221672] [2019-10-14 23:17:13,393 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:17:13,393 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-14 23:17:13,393 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431611599] [2019-10-14 23:17:13,397 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-14 23:17:13,397 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:17:13,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-14 23:17:13,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:17:13,409 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2019-10-14 23:17:13,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:17:13,428 INFO L93 Difference]: Finished difference Result 37 states and 49 transitions. [2019-10-14 23:17:13,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-14 23:17:13,429 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-10-14 23:17:13,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:17:13,438 INFO L225 Difference]: With dead ends: 37 [2019-10-14 23:17:13,438 INFO L226 Difference]: Without dead ends: 16 [2019-10-14 23:17:13,442 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:17:13,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-10-14 23:17:13,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-10-14 23:17:13,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-10-14 23:17:13,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2019-10-14 23:17:13,479 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2019-10-14 23:17:13,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:17:13,479 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-10-14 23:17:13,479 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-14 23:17:13,480 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2019-10-14 23:17:13,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-14 23:17:13,480 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:17:13,481 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:17:13,683 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:17:13,683 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:17:13,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:17:13,684 INFO L82 PathProgramCache]: Analyzing trace with hash -871939661, now seen corresponding path program 1 times [2019-10-14 23:17:13,685 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:17:13,686 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480401123] [2019-10-14 23:17:13,686 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:13,687 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:13,687 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:17:13,691 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-14 23:17:13,691 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [381380381] [2019-10-14 23:17:13,691 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 [2019-10-14 23:17:13,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:17:13,721 WARN L254 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 14 conjunts are in the unsatisfiable core [2019-10-14 23:17:13,723 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:17:13,900 WARN L191 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 25 [2019-10-14 23:17:13,914 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:17:23,434 WARN L191 SmtUtils]: Spent 5.00 s on a formula simplification. DAG size of input: 34 DAG size of output: 3 [2019-10-14 23:17:23,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:17:23,452 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480401123] [2019-10-14 23:17:23,452 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-14 23:17:23,452 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381380381] [2019-10-14 23:17:23,452 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:17:23,453 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:17:23,453 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114111088] [2019-10-14 23:17:23,455 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:17:23,455 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:17:23,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:17:23,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:17:23,456 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 5 states. [2019-10-14 23:17:25,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:17:25,714 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2019-10-14 23:17:25,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:17:25,714 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-10-14 23:17:25,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:17:25,716 INFO L225 Difference]: With dead ends: 27 [2019-10-14 23:17:25,717 INFO L226 Difference]: Without dead ends: 25 [2019-10-14 23:17:25,718 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:17:25,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-10-14 23:17:25,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2019-10-14 23:17:25,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-10-14 23:17:25,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2019-10-14 23:17:25,728 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 10 [2019-10-14 23:17:25,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:17:25,729 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2019-10-14 23:17:25,729 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:17:25,730 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2019-10-14 23:17:25,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-14 23:17:25,731 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:17:25,734 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:17:25,938 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:17:25,939 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:17:25,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:17:25,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1067575333, now seen corresponding path program 1 times [2019-10-14 23:17:25,940 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:17:25,941 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059464625] [2019-10-14 23:17:25,941 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:25,941 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:25,941 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:17:25,945 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-14 23:17:25,946 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [68473957] [2019-10-14 23:17:25,946 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 [2019-10-14 23:17:25,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:17:25,980 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 14 conjunts are in the unsatisfiable core [2019-10-14 23:17:25,982 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:17:26,105 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:17:26,152 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:17:26,152 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059464625] [2019-10-14 23:17:26,153 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-14 23:17:26,153 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68473957] [2019-10-14 23:17:26,153 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:17:26,153 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2019-10-14 23:17:26,154 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58946607] [2019-10-14 23:17:26,154 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:17:26,155 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:17:26,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:17:26,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=53, Unknown=1, NotChecked=0, Total=72 [2019-10-14 23:17:26,155 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 9 states. [2019-10-14 23:17:26,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:17:26,340 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2019-10-14 23:17:26,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-14 23:17:26,341 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2019-10-14 23:17:26,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:17:26,341 INFO L225 Difference]: With dead ends: 22 [2019-10-14 23:17:26,341 INFO L226 Difference]: Without dead ends: 0 [2019-10-14 23:17:26,342 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=80, Unknown=1, NotChecked=0, Total=110 [2019-10-14 23:17:26,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-14 23:17:26,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-14 23:17:26,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-14 23:17:26,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-14 23:17:26,344 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2019-10-14 23:17:26,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:17:26,344 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-14 23:17:26,344 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:17:26,344 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-14 23:17:26,344 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-14 23:17:26,550 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:17:26,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-14 23:17:26,643 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-10-14 23:17:26,644 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:17:26,644 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:17:26,644 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-14 23:17:26,644 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-14 23:17:26,644 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:17:26,645 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)))) [2019-10-14 23:17:26,645 INFO L443 ceAbstractionStarter]: For program point L29-1(lines 28 39) no Hoare annotation was computed. [2019-10-14 23:17:26,645 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 14 44) no Hoare annotation was computed. [2019-10-14 23:17:26,645 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 14 44) no Hoare annotation was computed. [2019-10-14 23:17:26,646 INFO L443 ceAbstractionStarter]: For program point L42(line 42) no Hoare annotation was computed. [2019-10-14 23:17:26,646 INFO L443 ceAbstractionStarter]: For program point L32(lines 32 38) no Hoare annotation was computed. [2019-10-14 23:17:26,646 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)))) [2019-10-14 23:17:26,646 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 14 44) the Hoare annotation is: true [2019-10-14 23:17:26,647 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))) [2019-10-14 23:17:26,647 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 6 12) the Hoare annotation is: true [2019-10-14 23:17:26,647 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 6 12) no Hoare annotation was computed. [2019-10-14 23:17:26,647 INFO L443 ceAbstractionStarter]: For program point L8(lines 8 9) no Hoare annotation was computed. [2019-10-14 23:17:26,647 INFO L443 ceAbstractionStarter]: For program point L7(lines 7 10) no Hoare annotation was computed. [2019-10-14 23:17:26,647 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2019-10-14 23:17:26,648 INFO L443 ceAbstractionStarter]: For program point L7-2(lines 6 12) no Hoare annotation was computed. [2019-10-14 23:17:26,655 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2019-10-14 23:17:26,656 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2019-10-14 23:17:26,663 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2019-10-14 23:17:26,663 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2019-10-14 23:17:26,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:17:26 BoogieIcfgContainer [2019-10-14 23:17:26,666 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-14 23:17:26,668 INFO L168 Benchmark]: Toolchain (without parser) took 14168.59 ms. Allocated memory was 138.4 MB in the beginning and 234.4 MB in the end (delta: 95.9 MB). Free memory was 102.9 MB in the beginning and 204.2 MB in the end (delta: -101.3 MB). Peak memory consumption was 84.7 MB. Max. memory is 7.1 GB. [2019-10-14 23:17:26,669 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 138.4 MB. Free memory was 121.7 MB in the beginning and 121.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-14 23:17:26,670 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.81 ms. Allocated memory is still 138.4 MB. Free memory was 102.7 MB in the beginning and 93.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2019-10-14 23:17:26,671 INFO L168 Benchmark]: Boogie Preprocessor took 105.42 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 93.0 MB in the beginning and 179.5 MB in the end (delta: -86.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2019-10-14 23:17:26,671 INFO L168 Benchmark]: RCFGBuilder took 230.66 ms. Allocated memory is still 201.3 MB. Free memory was 179.5 MB in the beginning and 167.5 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. [2019-10-14 23:17:26,673 INFO L168 Benchmark]: TraceAbstraction took 13553.66 ms. Allocated memory was 201.3 MB in the beginning and 234.4 MB in the end (delta: 33.0 MB). Free memory was 166.8 MB in the beginning and 204.2 MB in the end (delta: -37.4 MB). Peak memory consumption was 85.7 MB. Max. memory is 7.1 GB. [2019-10-14 23:17:26,677 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 138.4 MB. Free memory was 121.7 MB in the beginning and 121.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 274.81 ms. Allocated memory is still 138.4 MB. Free memory was 102.7 MB in the beginning and 93.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 105.42 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 93.0 MB in the beginning and 179.5 MB in the end (delta: -86.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 230.66 ms. Allocated memory is still 201.3 MB. Free memory was 179.5 MB in the beginning and 167.5 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13553.66 ms. Allocated memory was 201.3 MB in the beginning and 234.4 MB in the end (delta: 33.0 MB). Free memory was 166.8 MB in the beginning and 204.2 MB in the end (delta: -37.4 MB). Peak memory consumption was 85.7 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 [2019-10-14 23:17:26,686 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2019-10-14 23:17:26,687 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2019-10-14 23:17:26,687 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2019-10-14 23:17:26,687 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: 13.4s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 44 SDtfs, 19 SDslu, 73 SDs, 0 SdLazy, 66 SolverSat, 8 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 5.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 12 PreInvPairs, 17 NumberOfFragments, 119 HoareAnnotationTreeSize, 12 FomulaSimplifications, 168 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 9.9s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 33 ConstructedInterpolants, 4 QuantifiedInterpolants, 2676 SizeOfPredicates, 8 NumberOfNonLiveVariables, 95 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 1/2 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...