/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 -i ../../../trunk/examples/svcomp/nla-digbench/geo1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 16:59:03,065 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 16:59:03,068 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 16:59:03,107 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 16:59:03,108 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 16:59:03,117 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 16:59:03,118 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 16:59:03,121 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 16:59:03,122 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 16:59:03,127 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 16:59:03,128 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 16:59:03,129 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 16:59:03,129 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 16:59:03,131 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 16:59:03,133 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 16:59:03,134 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 16:59:03,136 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 16:59:03,137 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 16:59:03,141 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 16:59:03,143 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 16:59:03,144 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 16:59:03,146 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 16:59:03,148 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 16:59:03,148 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 16:59:03,154 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 16:59:03,166 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 16:59:03,167 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 16:59:03,168 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 16:59:03,169 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 [2020-08-22 16:59:03,213 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 16:59:03,213 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 16:59:03,215 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 16:59:03,215 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 16:59:03,215 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 16:59:03,216 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 16:59:03,216 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 16:59:03,216 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 16:59:03,216 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 16:59:03,216 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 16:59:03,217 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 16:59:03,218 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 16:59:03,218 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 16:59:03,218 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 16:59:03,219 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 16:59:03,219 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 16:59:03,219 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 16:59:03,219 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 16:59:03,219 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 16:59:03,220 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 16:59:03,220 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 16:59:03,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:59:03,220 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 16:59:03,220 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 16:59:03,221 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 16:59:03,221 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 16:59:03,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 16:59:03,221 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 16:59:03,221 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 16:59:03,221 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 16:59:03,510 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 16:59:03,522 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 16:59:03,526 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 16:59:03,527 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 16:59:03,528 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 16:59:03,528 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/geo1.c [2020-08-22 16:59:03,590 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42dbd0854/d8aaf44997f24a45ae61e187c9d7b369/FLAGf5a945237 [2020-08-22 16:59:04,047 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 16:59:04,047 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/geo1.c [2020-08-22 16:59:04,054 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42dbd0854/d8aaf44997f24a45ae61e187c9d7b369/FLAGf5a945237 [2020-08-22 16:59:04,478 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42dbd0854/d8aaf44997f24a45ae61e187c9d7b369 [2020-08-22 16:59:04,490 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 16:59:04,492 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 16:59:04,493 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 16:59:04,493 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 16:59:04,497 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 16:59:04,498 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:59:04" (1/1) ... [2020-08-22 16:59:04,501 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ff6f344 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:59:04, skipping insertion in model container [2020-08-22 16:59:04,502 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:59:04" (1/1) ... [2020-08-22 16:59:04,510 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 16:59:04,532 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 16:59:04,753 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:59:04,758 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 16:59:04,773 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:59:04,786 INFO L208 MainTranslator]: Completed translation [2020-08-22 16:59:04,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:59:04 WrapperNode [2020-08-22 16:59:04,787 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 16:59:04,788 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 16:59:04,788 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 16:59:04,788 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 16:59:04,798 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:59:04" (1/1) ... [2020-08-22 16:59:04,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:59:04" (1/1) ... [2020-08-22 16:59:04,882 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:59:04" (1/1) ... [2020-08-22 16:59:04,882 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:59:04" (1/1) ... [2020-08-22 16:59:04,886 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:59:04" (1/1) ... [2020-08-22 16:59:04,891 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:59:04" (1/1) ... [2020-08-22 16:59:04,897 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:59:04" (1/1) ... [2020-08-22 16:59:04,904 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 16:59:04,905 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 16:59:04,905 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 16:59:04,905 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 16:59:04,906 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:59:04" (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 [2020-08-22 16:59:04,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 16:59:04,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 16:59:04,970 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 16:59:04,970 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 16:59:04,970 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 16:59:04,970 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 16:59:04,970 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 16:59:04,970 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 16:59:04,970 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 16:59:04,971 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 16:59:04,971 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 16:59:04,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 16:59:04,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 16:59:05,159 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 16:59:05,159 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 16:59:05,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:59:05 BoogieIcfgContainer [2020-08-22 16:59:05,162 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 16:59:05,164 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 16:59:05,164 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 16:59:05,167 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 16:59:05,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:59:04" (1/3) ... [2020-08-22 16:59:05,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1acc104a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:59:05, skipping insertion in model container [2020-08-22 16:59:05,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:59:04" (2/3) ... [2020-08-22 16:59:05,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1acc104a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:59:05, skipping insertion in model container [2020-08-22 16:59:05,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:59:05" (3/3) ... [2020-08-22 16:59:05,171 INFO L109 eAbstractionObserver]: Analyzing ICFG geo1.c [2020-08-22 16:59:05,182 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 16:59:05,190 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 16:59:05,204 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 16:59:05,229 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 16:59:05,229 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 16:59:05,229 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 16:59:05,229 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 16:59:05,230 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 16:59:05,230 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 16:59:05,230 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 16:59:05,230 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 16:59:05,249 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-08-22 16:59:05,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-08-22 16:59:05,254 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:59:05,255 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:59:05,256 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:59:05,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:59:05,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1923958992, now seen corresponding path program 1 times [2020-08-22 16:59:05,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:59:05,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673335742] [2020-08-22 16:59:05,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:59:05,363 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-22 16:59:05,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [106756523] [2020-08-22 16:59:05,364 INFO L95 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 [2020-08-22 16:59:05,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:05,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 7 conjunts are in the unsatisfiable core [2020-08-22 16:59:05,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:59:05,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:59:05,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673335742] [2020-08-22 16:59:05,549 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-08-22 16:59:05,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106756523] [2020-08-22 16:59:05,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:59:05,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 16:59:05,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105216530] [2020-08-22 16:59:05,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 16:59:05,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:59:05,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 16:59:05,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:59:05,581 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 5 states. [2020-08-22 16:59:05,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:59:05,731 INFO L93 Difference]: Finished difference Result 45 states and 60 transitions. [2020-08-22 16:59:05,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 16:59:05,733 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-08-22 16:59:05,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:59:05,747 INFO L225 Difference]: With dead ends: 45 [2020-08-22 16:59:05,748 INFO L226 Difference]: Without dead ends: 24 [2020-08-22 16:59:05,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 16:59:05,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-08-22 16:59:05,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2020-08-22 16:59:05,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-08-22 16:59:05,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-08-22 16:59:05,813 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 10 [2020-08-22 16:59:05,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:59:05,814 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-08-22 16:59:05,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 16:59:05,814 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-08-22 16:59:05,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-22 16:59:05,815 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:59:05,816 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:59:06,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-08-22 16:59:06,030 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:59:06,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:59:06,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1187633082, now seen corresponding path program 1 times [2020-08-22 16:59:06,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:59:06,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206213883] [2020-08-22 16:59:06,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:59:06,043 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-22 16:59:06,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1258313612] [2020-08-22 16:59:06,044 INFO L95 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 [2020-08-22 16:59:06,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:06,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 10 conjunts are in the unsatisfiable core [2020-08-22 16:59:06,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:59:06,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:59:06,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206213883] [2020-08-22 16:59:06,255 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-08-22 16:59:06,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258313612] [2020-08-22 16:59:06,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 16:59:06,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-22 16:59:06,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090310762] [2020-08-22 16:59:06,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 16:59:06,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:59:06,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 16:59:06,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 16:59:06,259 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 8 states. [2020-08-22 16:59:08,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:59:08,447 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2020-08-22 16:59:08,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 16:59:08,448 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-08-22 16:59:08,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:59:08,451 INFO L225 Difference]: With dead ends: 28 [2020-08-22 16:59:08,451 INFO L226 Difference]: Without dead ends: 20 [2020-08-22 16:59:08,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-08-22 16:59:08,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-08-22 16:59:08,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-08-22 16:59:08,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-08-22 16:59:08,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-08-22 16:59:08,465 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 17 [2020-08-22 16:59:08,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:59:08,467 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-08-22 16:59:08,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 16:59:08,467 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-08-22 16:59:08,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-22 16:59:08,468 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:59:08,468 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:59:08,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:59:08,683 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:59:08,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:59:08,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1235596592, now seen corresponding path program 1 times [2020-08-22 16:59:08,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:59:08,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395723755] [2020-08-22 16:59:08,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:59:08,694 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-22 16:59:08,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [34484521] [2020-08-22 16:59:08,694 INFO L95 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 [2020-08-22 16:59:08,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:08,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 13 conjunts are in the unsatisfiable core [2020-08-22 16:59:08,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:59:08,803 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:59:08,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395723755] [2020-08-22 16:59:08,804 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-08-22 16:59:08,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34484521] [2020-08-22 16:59:08,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 16:59:08,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-22 16:59:08,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155653645] [2020-08-22 16:59:08,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 16:59:08,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:59:08,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 16:59:08,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 16:59:08,807 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 6 states. [2020-08-22 16:59:08,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:59:08,883 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2020-08-22 16:59:08,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 16:59:08,883 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-08-22 16:59:08,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:59:08,885 INFO L225 Difference]: With dead ends: 30 [2020-08-22 16:59:08,885 INFO L226 Difference]: Without dead ends: 28 [2020-08-22 16:59:08,885 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 16:59:08,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-08-22 16:59:08,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-08-22 16:59:08,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-08-22 16:59:08,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-08-22 16:59:08,894 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 17 [2020-08-22 16:59:08,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:59:08,894 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-08-22 16:59:08,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 16:59:08,895 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-08-22 16:59:08,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-22 16:59:08,896 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:59:08,896 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:59:09,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:59:09,102 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:59:09,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:59:09,103 INFO L82 PathProgramCache]: Analyzing trace with hash -677841104, now seen corresponding path program 2 times [2020-08-22 16:59:09,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:59:09,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108136158] [2020-08-22 16:59:09,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:59:09,110 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-22 16:59:09,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [244422565] [2020-08-22 16:59:09,111 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:59:09,153 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-08-22 16:59:09,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:59:09,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 20 conjunts are in the unsatisfiable core [2020-08-22 16:59:09,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:59:09,757 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-08-22 16:59:09,766 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-08-22 16:59:09,778 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:59:09,800 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:59:12,217 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 3 [2020-08-22 16:59:12,270 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 16:59:12,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108136158] [2020-08-22 16:59:12,270 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-08-22 16:59:12,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244422565] [2020-08-22 16:59:12,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 16:59:12,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-22 16:59:12,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878621008] [2020-08-22 16:59:12,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 16:59:12,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:59:12,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 16:59:12,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-08-22 16:59:12,273 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 10 states. [2020-08-22 16:59:16,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:59:16,526 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-08-22 16:59:16,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 16:59:16,526 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-08-22 16:59:16,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:59:16,527 INFO L225 Difference]: With dead ends: 31 [2020-08-22 16:59:16,527 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 16:59:16,529 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-22 16:59:16,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 16:59:16,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 16:59:16,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 16:59:16,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 16:59:16,530 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2020-08-22 16:59:16,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:59:16,531 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 16:59:16,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 16:59:16,531 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 16:59:16,531 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 16:59:16,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:59:16,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 16:59:16,772 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-22 16:59:16,773 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-22 16:59:16,773 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-22 16:59:16,773 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 16:59:16,773 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 16:59:16,773 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-22 16:59:16,773 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 10 12) no Hoare annotation was computed. [2020-08-22 16:59:16,774 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-08-22 16:59:16,774 INFO L268 CegarLoopResult]: For program point L11-2(lines 10 12) no Hoare annotation was computed. [2020-08-22 16:59:16,774 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 10 12) no Hoare annotation was computed. [2020-08-22 16:59:16,774 INFO L271 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: true [2020-08-22 16:59:16,774 INFO L268 CegarLoopResult]: For program point L31-1(lines 30 40) no Hoare annotation was computed. [2020-08-22 16:59:16,774 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 20 46) the Hoare annotation is: true [2020-08-22 16:59:16,774 INFO L271 CegarLoopResult]: At program point L30-2(lines 30 40) the Hoare annotation is: true [2020-08-22 16:59:16,775 INFO L268 CegarLoopResult]: For program point L30-3(lines 30 40) no Hoare annotation was computed. [2020-08-22 16:59:16,775 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 20 46) no Hoare annotation was computed. [2020-08-22 16:59:16,775 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 20 46) no Hoare annotation was computed. [2020-08-22 16:59:16,775 INFO L264 CegarLoopResult]: At program point L44(line 44) the Hoare annotation is: (exists ((v_main_~x~0_12 Int) (main_~z~0 Int)) (let ((.cse0 (* v_main_~x~0_12 main_~z~0))) (and (= (+ .cse0 1) (+ main_~y~0 v_main_~x~0_12)) (= (+ main_~x~0 v_main_~x~0_12) .cse0)))) [2020-08-22 16:59:16,775 INFO L268 CegarLoopResult]: For program point L44-1(line 44) no Hoare annotation was computed. [2020-08-22 16:59:16,775 INFO L268 CegarLoopResult]: For program point L15(lines 15 16) no Hoare annotation was computed. [2020-08-22 16:59:16,776 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 13 19) the Hoare annotation is: true [2020-08-22 16:59:16,778 INFO L268 CegarLoopResult]: For program point L14(lines 14 17) no Hoare annotation was computed. [2020-08-22 16:59:16,778 INFO L268 CegarLoopResult]: For program point L14-2(lines 13 19) no Hoare annotation was computed. [2020-08-22 16:59:16,778 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 13 19) no Hoare annotation was computed. [2020-08-22 16:59:16,778 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2020-08-22 16:59:16,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:59:16 BoogieIcfgContainer [2020-08-22 16:59:16,789 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 16:59:16,791 INFO L168 Benchmark]: Toolchain (without parser) took 12299.25 ms. Allocated memory was 140.0 MB in the beginning and 234.9 MB in the end (delta: 94.9 MB). Free memory was 103.0 MB in the beginning and 157.8 MB in the end (delta: -54.8 MB). Peak memory consumption was 40.1 MB. Max. memory is 7.1 GB. [2020-08-22 16:59:16,792 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-22 16:59:16,793 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.16 ms. Allocated memory is still 140.0 MB. Free memory was 102.8 MB in the beginning and 93.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-08-22 16:59:16,794 INFO L168 Benchmark]: Boogie Preprocessor took 116.65 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 93.2 MB in the beginning and 180.2 MB in the end (delta: -87.0 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-08-22 16:59:16,795 INFO L168 Benchmark]: RCFGBuilder took 257.77 ms. Allocated memory is still 202.4 MB. Free memory was 180.2 MB in the beginning and 168.3 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. [2020-08-22 16:59:16,795 INFO L168 Benchmark]: TraceAbstraction took 11625.44 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 167.6 MB in the beginning and 157.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2020-08-22 16:59:16,800 INFO L336 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 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 294.16 ms. Allocated memory is still 140.0 MB. Free memory was 102.8 MB in the beginning and 93.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 116.65 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 93.2 MB in the beginning and 180.2 MB in the end (delta: -87.0 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 257.77 ms. Allocated memory is still 202.4 MB. Free memory was 180.2 MB in the beginning and 168.3 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11625.44 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 167.6 MB in the beginning and 157.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: 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: 30]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 11.5s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 6.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 54 SDtfs, 34 SDslu, 219 SDs, 0 SdLazy, 171 SolverSat, 8 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 6.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=3, 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, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 14 PreInvPairs, 23 NumberOfFragments, 25 HoareAnnotationTreeSize, 14 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 64 ConstructedInterpolants, 1 QuantifiedInterpolants, 5602 SizeOfPredicates, 12 NumberOfNonLiveVariables, 199 ConjunctsInSsa, 50 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 10/21 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...