/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-acceleration/simple_3-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 02:21:30,378 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 02:21:30,381 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 02:21:30,404 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 02:21:30,405 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 02:21:30,406 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 02:21:30,407 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 02:21:30,409 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 02:21:30,410 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 02:21:30,411 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 02:21:30,412 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 02:21:30,413 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 02:21:30,414 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 02:21:30,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 02:21:30,416 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 02:21:30,417 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 02:21:30,417 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 02:21:30,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 02:21:30,420 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 02:21:30,421 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 02:21:30,423 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 02:21:30,424 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 02:21:30,425 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 02:21:30,426 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 02:21:30,428 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 02:21:30,435 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 02:21:30,436 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 02:21:30,437 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 02:21:30,438 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 [2020-08-22 02:21:30,461 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 02:21:30,461 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 02:21:30,462 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 02:21:30,462 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 02:21:30,463 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 02:21:30,463 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 02:21:30,463 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 02:21:30,463 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 02:21:30,463 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 02:21:30,464 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 02:21:30,464 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 02:21:30,464 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 02:21:30,464 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 02:21:30,464 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 02:21:30,465 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 02:21:30,465 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 02:21:30,465 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 02:21:30,465 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 02:21:30,465 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 02:21:30,466 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 02:21:30,466 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 02:21:30,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 02:21:30,466 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 02:21:30,466 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 02:21:30,467 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 02:21:30,467 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 02:21:30,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 02:21:30,467 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 02:21:30,467 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 02:21:30,468 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=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-08-22 02:21:30,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 02:21:30,813 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 02:21:30,816 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 02:21:30,818 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 02:21:30,818 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 02:21:30,819 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/simple_3-2.c [2020-08-22 02:21:30,899 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0c2512e0c/68b57d88105b443b8c73a32b81e6dce1/FLAG3482fc178 [2020-08-22 02:21:31,367 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 02:21:31,368 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-acceleration/simple_3-2.c [2020-08-22 02:21:31,374 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0c2512e0c/68b57d88105b443b8c73a32b81e6dce1/FLAG3482fc178 [2020-08-22 02:21:31,773 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0c2512e0c/68b57d88105b443b8c73a32b81e6dce1 [2020-08-22 02:21:31,783 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 02:21:31,785 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 02:21:31,786 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 02:21:31,786 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 02:21:31,790 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 02:21:31,791 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:21:31" (1/1) ... [2020-08-22 02:21:31,794 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26e5903c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:21:31, skipping insertion in model container [2020-08-22 02:21:31,794 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:21:31" (1/1) ... [2020-08-22 02:21:31,803 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 02:21:31,823 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 02:21:32,026 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:21:32,030 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 02:21:32,046 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:21:32,057 INFO L208 MainTranslator]: Completed translation [2020-08-22 02:21:32,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:21:32 WrapperNode [2020-08-22 02:21:32,057 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 02:21:32,058 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 02:21:32,058 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 02:21:32,058 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 02:21:32,070 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:21:32" (1/1) ... [2020-08-22 02:21:32,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:21:32" (1/1) ... [2020-08-22 02:21:32,075 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:21:32" (1/1) ... [2020-08-22 02:21:32,076 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:21:32" (1/1) ... [2020-08-22 02:21:32,161 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:21:32" (1/1) ... [2020-08-22 02:21:32,167 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:21:32" (1/1) ... [2020-08-22 02:21:32,168 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:21:32" (1/1) ... [2020-08-22 02:21:32,169 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 02:21:32,170 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 02:21:32,170 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 02:21:32,171 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 02:21:32,172 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:21:32" (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 [2020-08-22 02:21:32,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 02:21:32,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 02:21:32,235 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 02:21:32,235 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 02:21:32,235 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 02:21:32,235 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ushort [2020-08-22 02:21:32,235 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 02:21:32,236 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 02:21:32,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 02:21:32,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 02:21:32,396 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 02:21:32,397 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 02:21:32,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:21:32 BoogieIcfgContainer [2020-08-22 02:21:32,400 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 02:21:32,402 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 02:21:32,402 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 02:21:32,405 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 02:21:32,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 02:21:31" (1/3) ... [2020-08-22 02:21:32,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bed91d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:21:32, skipping insertion in model container [2020-08-22 02:21:32,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:21:32" (2/3) ... [2020-08-22 02:21:32,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bed91d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:21:32, skipping insertion in model container [2020-08-22 02:21:32,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:21:32" (3/3) ... [2020-08-22 02:21:32,409 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_3-2.c [2020-08-22 02:21:32,420 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 02:21:32,427 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 02:21:32,441 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 02:21:32,462 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 02:21:32,462 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 02:21:32,463 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 02:21:32,463 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 02:21:32,463 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 02:21:32,463 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 02:21:32,463 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 02:21:32,463 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 02:21:32,478 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-08-22 02:21:32,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-08-22 02:21:32,484 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:21:32,485 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:21:32,485 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:21:32,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:21:32,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1846144830, now seen corresponding path program 1 times [2020-08-22 02:21:32,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:21:32,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1175947877] [2020-08-22 02:21:32,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:21:32,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:21:32,875 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 15 [2020-08-22 02:21:32,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:21:32,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:21:32,933 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 02:21:32,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1175947877] [2020-08-22 02:21:32,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:21:32,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 02:21:32,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166684113] [2020-08-22 02:21:32,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 02:21:32,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:21:32,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 02:21:32,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 02:21:32,962 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 5 states. [2020-08-22 02:21:33,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:21:33,040 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2020-08-22 02:21:33,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 02:21:33,043 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-08-22 02:21:33,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:21:33,050 INFO L225 Difference]: With dead ends: 26 [2020-08-22 02:21:33,051 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 02:21:33,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 02:21:33,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 02:21:33,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 02:21:33,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 02:21:33,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 02:21:33,087 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-08-22 02:21:33,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:21:33,088 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 02:21:33,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 02:21:33,088 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 02:21:33,089 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 02:21:33,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 02:21:33,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 02:21:33,164 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-22 02:21:33,165 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-22 02:21:33,165 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-22 02:21:33,165 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 02:21:33,166 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 02:21:33,166 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-22 02:21:33,166 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 20) the Hoare annotation is: true [2020-08-22 02:21:33,166 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 20) no Hoare annotation was computed. [2020-08-22 02:21:33,167 INFO L264 CegarLoopResult]: At program point L15-2(lines 15 17) the Hoare annotation is: (and (<= main_~x~0 (let ((.cse0 (div main_~x~0 2))) (+ (* 2 .cse0) (* 4294967296 (div (+ (* .cse0 (- 2)) main_~x~0) 4294967296))))) (<= 0 main_~x~0)) [2020-08-22 02:21:33,167 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 11 20) no Hoare annotation was computed. [2020-08-22 02:21:33,168 INFO L264 CegarLoopResult]: At program point L15-3(lines 15 17) the Hoare annotation is: (and (<= main_~x~0 (let ((.cse0 (div main_~x~0 2))) (+ (* 2 .cse0) (* 4294967296 (div (+ (* .cse0 (- 2)) main_~x~0) 4294967296))))) (<= 0 main_~x~0)) [2020-08-22 02:21:33,168 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true [2020-08-22 02:21:33,168 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 4 9) no Hoare annotation was computed. [2020-08-22 02:21:33,168 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-08-22 02:21:33,168 INFO L268 CegarLoopResult]: For program point L5(lines 5 7) no Hoare annotation was computed. [2020-08-22 02:21:33,169 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2020-08-22 02:21:33,169 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 9) no Hoare annotation was computed. [2020-08-22 02:21:33,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 02:21:33 BoogieIcfgContainer [2020-08-22 02:21:33,188 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 02:21:33,190 INFO L168 Benchmark]: Toolchain (without parser) took 1404.88 ms. Allocated memory was 135.8 MB in the beginning and 198.2 MB in the end (delta: 62.4 MB). Free memory was 98.6 MB in the beginning and 127.9 MB in the end (delta: -29.3 MB). Peak memory consumption was 33.1 MB. Max. memory is 7.1 GB. [2020-08-22 02:21:33,192 INFO L168 Benchmark]: CDTParser took 2.23 ms. Allocated memory is still 135.8 MB. Free memory was 117.3 MB in the beginning and 117.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 02:21:33,193 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.64 ms. Allocated memory is still 135.8 MB. Free memory was 98.4 MB in the beginning and 89.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-08-22 02:21:33,195 INFO L168 Benchmark]: Boogie Preprocessor took 111.18 ms. Allocated memory was 135.8 MB in the beginning and 198.2 MB in the end (delta: 62.4 MB). Free memory was 89.1 MB in the beginning and 177.1 MB in the end (delta: -88.0 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. [2020-08-22 02:21:33,196 INFO L168 Benchmark]: RCFGBuilder took 230.43 ms. Allocated memory is still 198.2 MB. Free memory was 177.1 MB in the beginning and 165.3 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. [2020-08-22 02:21:33,197 INFO L168 Benchmark]: TraceAbstraction took 786.17 ms. Allocated memory is still 198.2 MB. Free memory was 164.6 MB in the beginning and 127.9 MB in the end (delta: 36.7 MB). Peak memory consumption was 36.7 MB. Max. memory is 7.1 GB. [2020-08-22 02:21:33,202 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 2.23 ms. Allocated memory is still 135.8 MB. Free memory was 117.3 MB in the beginning and 117.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 271.64 ms. Allocated memory is still 135.8 MB. Free memory was 98.4 MB in the beginning and 89.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 111.18 ms. Allocated memory was 135.8 MB in the beginning and 198.2 MB in the end (delta: 62.4 MB). Free memory was 89.1 MB in the beginning and 177.1 MB in the end (delta: -88.0 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 230.43 ms. Allocated memory is still 198.2 MB. Free memory was 177.1 MB in the beginning and 165.3 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 786.17 ms. Allocated memory is still 198.2 MB. Free memory was 164.6 MB in the beginning and 127.9 MB in the end (delta: 36.7 MB). Peak memory consumption was 36.7 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: 15]: Loop Invariant Derived loop invariant: x <= 2 * (x / 2) + 4294967296 * ((x / 2 * -2 + x) / 4294967296) && 0 <= x - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 6 SDslu, 25 SDs, 0 SdLazy, 13 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 8 PreInvPairs, 9 NumberOfFragments, 51 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 531 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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...