/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector/jain_2-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 00:17:47,120 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-08-19 00:17:47,158 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 00:17:47,162 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 00:17:47,163 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 00:17:47,165 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 00:17:47,165 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 00:17:47,166 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 00:17:47,168 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 00:17:47,170 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 00:17:47,172 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 00:17:47,173 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 00:17:47,174 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 00:17:47,175 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 00:17:47,177 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 00:17:47,185 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 00:17:47,186 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 00:17:47,187 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 00:17:47,188 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 00:17:47,211 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 00:17:47,212 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 00:17:47,213 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 00:17:47,213 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 00:17:47,214 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 00:17:47,214 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 00:17:47,214 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 00:17:47,214 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 00:17:47,214 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 00:17:47,215 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 00:17:47,215 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 00:17:47,215 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 00:17:47,215 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 00:17:47,215 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 00:17:47,215 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 00:17:47,216 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 00:17:47,216 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 00:17:47,216 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 00:17:47,216 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 00:17:47,217 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 00:17:47,217 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 00:17:47,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:17:47,217 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 00:17:47,217 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 00:17:47,218 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 00:17:47,218 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 00:17:47,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 00:17:47,218 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 00:17:47,218 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 00:17:47,219 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; [2020-08-19 00:17:47,528 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 00:17:47,541 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 00:17:47,545 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 00:17:47,546 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 00:17:47,547 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 00:17:47,547 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/jain_2-1.c [2020-08-19 00:17:47,619 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a282f981e/c7bd5ae54119424e9d62dc19b361a073/FLAGfba3cd619 [2020-08-19 00:17:48,016 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 00:17:48,017 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/jain_2-1.c [2020-08-19 00:17:48,024 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a282f981e/c7bd5ae54119424e9d62dc19b361a073/FLAGfba3cd619 [2020-08-19 00:17:48,042 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a282f981e/c7bd5ae54119424e9d62dc19b361a073 [2020-08-19 00:17:48,053 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 00:17:48,055 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 00:17:48,056 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 00:17:48,056 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 00:17:48,060 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 00:17:48,061 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:17:48" (1/1) ... [2020-08-19 00:17:48,064 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@743cee4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:17:48, skipping insertion in model container [2020-08-19 00:17:48,064 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:17:48" (1/1) ... [2020-08-19 00:17:48,072 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 00:17:48,089 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 00:17:48,296 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:17:48,305 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 00:17:48,326 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:17:48,342 INFO L208 MainTranslator]: Completed translation [2020-08-19 00:17:48,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:17:48 WrapperNode [2020-08-19 00:17:48,343 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 00:17:48,344 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 00:17:48,344 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 00:17:48,344 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 00:17:48,358 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:17:48" (1/1) ... [2020-08-19 00:17:48,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:17:48" (1/1) ... [2020-08-19 00:17:48,363 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:17:48" (1/1) ... [2020-08-19 00:17:48,363 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:17:48" (1/1) ... [2020-08-19 00:17:48,454 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:17:48" (1/1) ... [2020-08-19 00:17:48,458 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:17:48" (1/1) ... [2020-08-19 00:17:48,459 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:17:48" (1/1) ... [2020-08-19 00:17:48,461 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 00:17:48,461 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 00:17:48,461 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 00:17:48,461 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 00:17:48,462 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:17:48" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-19 00:17:48,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 00:17:48,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 00:17:48,529 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-19 00:17:48,529 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 00:17:48,529 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 00:17:48,530 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-08-19 00:17:48,530 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-19 00:17:48,530 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 00:17:48,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 00:17:48,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 00:17:48,682 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 00:17:48,682 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-19 00:17:48,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:17:48 BoogieIcfgContainer [2020-08-19 00:17:48,686 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 00:17:48,687 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 00:17:48,687 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 00:17:48,690 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 00:17:48,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 12:17:48" (1/3) ... [2020-08-19 00:17:48,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6322bfd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:17:48, skipping insertion in model container [2020-08-19 00:17:48,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:17:48" (2/3) ... [2020-08-19 00:17:48,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6322bfd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:17:48, skipping insertion in model container [2020-08-19 00:17:48,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:17:48" (3/3) ... [2020-08-19 00:17:48,694 INFO L109 eAbstractionObserver]: Analyzing ICFG jain_2-1.c [2020-08-19 00:17:48,705 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 00:17:48,713 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 00:17:48,725 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 00:17:48,746 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 00:17:48,747 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 00:17:48,747 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 00:17:48,747 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 00:17:48,747 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 00:17:48,747 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 00:17:48,748 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 00:17:48,748 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 00:17:48,764 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-08-19 00:17:48,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-08-19 00:17:48,770 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:17:48,771 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:17:48,771 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:17:48,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:17:48,776 INFO L82 PathProgramCache]: Analyzing trace with hash -13144129, now seen corresponding path program 1 times [2020-08-19 00:17:48,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:17:48,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684145773] [2020-08-19 00:17:48,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:17:48,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:17:49,118 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2020-08-19 00:17:49,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:17:49,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:17:49,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:17:49,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684145773] [2020-08-19 00:17:49,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:17:49,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 00:17:49,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003378252] [2020-08-19 00:17:49,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 00:17:49,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:17:49,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 00:17:49,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 00:17:49,196 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 6 states. [2020-08-19 00:17:49,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:17:49,292 INFO L93 Difference]: Finished difference Result 33 states and 45 transitions. [2020-08-19 00:17:49,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 00:17:49,295 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-08-19 00:17:49,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:17:49,302 INFO L225 Difference]: With dead ends: 33 [2020-08-19 00:17:49,303 INFO L226 Difference]: Without dead ends: 20 [2020-08-19 00:17:49,306 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-19 00:17:49,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-08-19 00:17:49,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2020-08-19 00:17:49,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-08-19 00:17:49,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-08-19 00:17:49,340 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 10 [2020-08-19 00:17:49,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:17:49,341 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-08-19 00:17:49,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 00:17:49,341 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-08-19 00:17:49,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-19 00:17:49,343 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:17:49,343 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:17:49,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 00:17:49,344 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:17:49,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:17:49,345 INFO L82 PathProgramCache]: Analyzing trace with hash 327764987, now seen corresponding path program 1 times [2020-08-19 00:17:49,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:17:49,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2033722458] [2020-08-19 00:17:49,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:17:49,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:17:49,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:17:49,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:17:49,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:17:49,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:17:49,528 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:17:49,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2033722458] [2020-08-19 00:17:49,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:17:49,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-19 00:17:49,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269898122] [2020-08-19 00:17:49,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 00:17:49,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:17:49,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 00:17:49,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-19 00:17:49,537 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 7 states. [2020-08-19 00:17:49,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:17:49,612 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-08-19 00:17:49,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 00:17:49,614 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-08-19 00:17:49,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:17:49,615 INFO L225 Difference]: With dead ends: 19 [2020-08-19 00:17:49,615 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 00:17:49,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-08-19 00:17:49,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 00:17:49,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 00:17:49,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 00:17:49,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 00:17:49,619 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-08-19 00:17:49,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:17:49,620 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 00:17:49,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 00:17:49,620 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 00:17:49,621 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 00:17:49,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 00:17:49,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 00:17:49,666 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-19 00:17:49,667 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-19 00:17:49,667 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-19 00:17:49,667 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-19 00:17:49,667 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-19 00:17:49,667 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-19 00:17:49,668 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 10 26) the Hoare annotation is: true [2020-08-19 00:17:49,668 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 10 26) no Hoare annotation was computed. [2020-08-19 00:17:49,668 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (let ((.cse0 (+ main_~x~0 main_~y~0 2))) (<= .cse0 (* 2 (div .cse0 2)))) [2020-08-19 00:17:49,668 INFO L264 CegarLoopResult]: At program point L23-1(lines 17 24) the Hoare annotation is: (let ((.cse0 (+ main_~x~0 main_~y~0 2))) (<= .cse0 (* 2 (div .cse0 2)))) [2020-08-19 00:17:49,669 INFO L268 CegarLoopResult]: For program point L17-2(lines 17 24) no Hoare annotation was computed. [2020-08-19 00:17:49,669 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 10 26) no Hoare annotation was computed. [2020-08-19 00:17:49,669 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true [2020-08-19 00:17:49,669 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 4 9) no Hoare annotation was computed. [2020-08-19 00:17:49,669 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-08-19 00:17:49,670 INFO L268 CegarLoopResult]: For program point L5(lines 5 7) no Hoare annotation was computed. [2020-08-19 00:17:49,670 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2020-08-19 00:17:49,670 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 9) no Hoare annotation was computed. [2020-08-19 00:17:49,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 12:17:49 BoogieIcfgContainer [2020-08-19 00:17:49,688 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 00:17:49,690 INFO L168 Benchmark]: Toolchain (without parser) took 1635.12 ms. Allocated memory was 146.8 MB in the beginning and 205.0 MB in the end (delta: 58.2 MB). Free memory was 102.9 MB in the beginning and 123.2 MB in the end (delta: -20.3 MB). Peak memory consumption was 37.9 MB. Max. memory is 7.1 GB. [2020-08-19 00:17:49,691 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 00:17:49,692 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.68 ms. Allocated memory is still 146.8 MB. Free memory was 102.7 MB in the beginning and 93.4 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-08-19 00:17:49,693 INFO L168 Benchmark]: Boogie Preprocessor took 116.72 ms. Allocated memory was 146.8 MB in the beginning and 205.0 MB in the end (delta: 58.2 MB). Free memory was 93.4 MB in the beginning and 184.0 MB in the end (delta: -90.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-08-19 00:17:49,694 INFO L168 Benchmark]: RCFGBuilder took 224.74 ms. Allocated memory is still 205.0 MB. Free memory was 184.0 MB in the beginning and 172.3 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. [2020-08-19 00:17:49,695 INFO L168 Benchmark]: TraceAbstraction took 1000.80 ms. Allocated memory is still 205.0 MB. Free memory was 171.6 MB in the beginning and 123.2 MB in the end (delta: 48.4 MB). Peak memory consumption was 48.4 MB. Max. memory is 7.1 GB. [2020-08-19 00:17:49,700 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 287.68 ms. Allocated memory is still 146.8 MB. Free memory was 102.7 MB in the beginning and 93.4 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 116.72 ms. Allocated memory was 146.8 MB in the beginning and 205.0 MB in the end (delta: 58.2 MB). Free memory was 93.4 MB in the beginning and 184.0 MB in the end (delta: -90.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 224.74 ms. Allocated memory is still 205.0 MB. Free memory was 184.0 MB in the beginning and 172.3 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1000.80 ms. Allocated memory is still 205.0 MB. Free memory was 171.6 MB in the beginning and 123.2 MB in the end (delta: 48.4 MB). Peak memory consumption was 48.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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: 17]: Loop Invariant Derived loop invariant: x + y + 2 <= 2 * ((x + y + 2) / 2) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 17 SDtfs, 11 SDslu, 59 SDs, 0 SdLazy, 33 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=1, 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, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 13 NumberOfFragments, 31 HoareAnnotationTreeSize, 9 FomulaSimplifications, 40 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 12 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1626 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 2/4 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...