/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-crafted/simple_vardep_1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 11:41:09,926 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-07-21 11:41:09,947 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 11:41:09,949 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 11:41:09,951 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 11:41:09,960 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 11:41:09,964 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 11:41:09,968 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 11:41:09,969 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 11:41:09,970 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 11:41:09,971 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 11:41:09,972 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 11:41:09,974 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 11:41:09,975 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 11:41:09,976 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 11:41:09,977 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 11:41:09,978 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 11:41:09,983 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 11:41:09,987 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 11:41:09,991 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 11:41:09,992 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 11:41:09,993 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 11:41:09,995 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 11:41:10,008 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 [2020-07-21 11:41:10,035 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 11:41:10,036 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 11:41:10,037 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 11:41:10,038 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 11:41:10,038 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 11:41:10,038 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 11:41:10,039 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 11:41:10,039 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 11:41:10,039 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 11:41:10,039 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 11:41:10,040 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 11:41:10,041 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 11:41:10,041 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 11:41:10,041 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 11:41:10,041 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 11:41:10,042 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 11:41:10,042 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 11:41:10,042 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 11:41:10,042 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 11:41:10,044 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 11:41:10,044 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 11:41:10,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 11:41:10,045 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 11:41:10,047 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 11:41:10,048 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 11:41:10,048 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 11:41:10,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:41:10,048 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 11:41:10,048 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 11:41:10,049 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 -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-21 11:41:10,343 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 11:41:10,364 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 11:41:10,367 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 11:41:10,369 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 11:41:10,370 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 11:41:10,371 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_vardep_1.c [2020-07-21 11:41:10,445 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e30a3fac3/eb1d4d26595a454c87a423e0676bee9e/FLAG204d152f1 [2020-07-21 11:41:10,930 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 11:41:10,931 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_vardep_1.c [2020-07-21 11:41:10,937 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e30a3fac3/eb1d4d26595a454c87a423e0676bee9e/FLAG204d152f1 [2020-07-21 11:41:11,354 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e30a3fac3/eb1d4d26595a454c87a423e0676bee9e [2020-07-21 11:41:11,362 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 11:41:11,365 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 11:41:11,366 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 11:41:11,366 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 11:41:11,369 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 11:41:11,370 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:41:11" (1/1) ... [2020-07-21 11:41:11,373 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78ea7124 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:41:11, skipping insertion in model container [2020-07-21 11:41:11,373 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:41:11" (1/1) ... [2020-07-21 11:41:11,381 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 11:41:11,395 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 11:41:11,567 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 11:41:11,572 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 11:41:11,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 11:41:11,602 INFO L208 MainTranslator]: Completed translation [2020-07-21 11:41:11,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:41:11 WrapperNode [2020-07-21 11:41:11,603 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 11:41:11,603 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 11:41:11,604 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 11:41:11,604 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 11:41:11,615 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:41:11" (1/1) ... [2020-07-21 11:41:11,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:41:11" (1/1) ... [2020-07-21 11:41:11,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:41:11" (1/1) ... [2020-07-21 11:41:11,621 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:41:11" (1/1) ... [2020-07-21 11:41:11,711 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:41:11" (1/1) ... [2020-07-21 11:41:11,716 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:41:11" (1/1) ... [2020-07-21 11:41:11,717 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:41:11" (1/1) ... [2020-07-21 11:41:11,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 11:41:11,719 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 11:41:11,719 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 11:41:11,719 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 11:41:11,720 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:41:11" (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 [2020-07-21 11:41:11,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 11:41:11,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 11:41:11,786 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 11:41:11,787 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 11:41:11,787 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 11:41:11,787 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 11:41:11,787 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 11:41:11,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 11:41:11,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 11:41:11,948 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 11:41:11,948 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 11:41:11,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:41:11 BoogieIcfgContainer [2020-07-21 11:41:11,952 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 11:41:11,953 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 11:41:11,953 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 11:41:11,957 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 11:41:11,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:41:11" (1/3) ... [2020-07-21 11:41:11,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38b4f4d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:41:11, skipping insertion in model container [2020-07-21 11:41:11,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:41:11" (2/3) ... [2020-07-21 11:41:11,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38b4f4d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:41:11, skipping insertion in model container [2020-07-21 11:41:11,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:41:11" (3/3) ... [2020-07-21 11:41:11,960 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_vardep_1.c [2020-07-21 11:41:11,971 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 11:41:11,979 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 11:41:11,992 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 11:41:12,016 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 11:41:12,016 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 11:41:12,016 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 11:41:12,016 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 11:41:12,017 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 11:41:12,017 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 11:41:12,017 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 11:41:12,017 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 11:41:12,034 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-07-21 11:41:12,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-21 11:41:12,039 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:41:12,040 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:41:12,040 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:41:12,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:41:12,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1847991872, now seen corresponding path program 1 times [2020-07-21 11:41:12,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:41:12,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45052596] [2020-07-21 11:41:12,052 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 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:41:12,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:41:12,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-21 11:41:12,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:41:12,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:41:12,255 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:41:12,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [45052596] [2020-07-21 11:41:12,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:41:12,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 11:41:12,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214948902] [2020-07-21 11:41:12,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 11:41:12,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:41:12,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 11:41:12,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-21 11:41:12,281 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 6 states. [2020-07-21 11:41:12,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:41:12,429 INFO L93 Difference]: Finished difference Result 36 states and 47 transitions. [2020-07-21 11:41:12,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 11:41:12,431 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-07-21 11:41:12,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:41:12,439 INFO L225 Difference]: With dead ends: 36 [2020-07-21 11:41:12,439 INFO L226 Difference]: Without dead ends: 20 [2020-07-21 11:41:12,442 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-21 11:41:12,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-07-21 11:41:12,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2020-07-21 11:41:12,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-07-21 11:41:12,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-07-21 11:41:12,484 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 10 [2020-07-21 11:41:12,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:41:12,485 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-07-21 11:41:12,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 11:41:12,485 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-07-21 11:41:12,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-21 11:41:12,486 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:41:12,487 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:41:12,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:41:12,702 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:41:12,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:41:12,703 INFO L82 PathProgramCache]: Analyzing trace with hash 982254813, now seen corresponding path program 1 times [2020-07-21 11:41:12,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:41:12,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [500482581] [2020-07-21 11:41:12,705 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 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:41:12,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:41:12,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 21 conjunts are in the unsatisfiable core [2020-07-21 11:41:12,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:41:12,841 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:41:12,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 11:41:12,874 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:41:13,022 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-21 11:41:13,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [500482581] [2020-07-21 11:41:13,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-21 11:41:13,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2020-07-21 11:41:13,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212445734] [2020-07-21 11:41:13,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 11:41:13,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:41:13,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 11:41:13,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-07-21 11:41:13,027 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 5 states. [2020-07-21 11:41:13,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:41:13,060 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-07-21 11:41:13,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 11:41:13,061 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-07-21 11:41:13,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:41:13,062 INFO L225 Difference]: With dead ends: 19 [2020-07-21 11:41:13,062 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 11:41:13,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-07-21 11:41:13,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 11:41:13,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 11:41:13,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 11:41:13,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 11:41:13,065 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-07-21 11:41:13,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:41:13,066 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 11:41:13,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 11:41:13,066 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 11:41:13,066 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 11:41:13,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:41:13,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 11:41:13,347 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-21 11:41:13,348 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 11:41:13,348 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 11:41:13,348 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 11:41:13,348 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 11:41:13,349 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 11:41:13,349 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 27) the Hoare annotation is: true [2020-07-21 11:41:13,349 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 27) no Hoare annotation was computed. [2020-07-21 11:41:13,349 INFO L264 CegarLoopResult]: At program point L24(line 24) the Hoare annotation is: (= (mod main_~k~0 4294967296) (mod (+ main_~j~0 main_~i~0) 4294967296)) [2020-07-21 11:41:13,350 INFO L264 CegarLoopResult]: At program point L24-1(lines 19 25) the Hoare annotation is: (= (mod (+ main_~j~0 main_~i~0) 4294967296) (mod main_~k~0 4294967296)) [2020-07-21 11:41:13,350 INFO L268 CegarLoopResult]: For program point L19-2(lines 13 27) no Hoare annotation was computed. [2020-07-21 11:41:13,350 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 5 11) the Hoare annotation is: true [2020-07-21 11:41:13,350 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 5 11) no Hoare annotation was computed. [2020-07-21 11:41:13,350 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-07-21 11:41:13,351 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-07-21 11:41:13,351 INFO L268 CegarLoopResult]: For program point L7-2(lines 5 11) no Hoare annotation was computed. [2020-07-21 11:41:13,351 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-07-21 11:41:13,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 11:41:13 BoogieIcfgContainer [2020-07-21 11:41:13,370 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 11:41:13,374 INFO L168 Benchmark]: Toolchain (without parser) took 2008.64 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 103.8 MB in the beginning and 108.1 MB in the end (delta: -4.3 MB). Peak memory consumption was 60.2 MB. Max. memory is 7.1 GB. [2020-07-21 11:41:13,375 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 138.9 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-21 11:41:13,376 INFO L168 Benchmark]: CACSL2BoogieTranslator took 237.40 ms. Allocated memory is still 138.9 MB. Free memory was 103.3 MB in the beginning and 94.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-07-21 11:41:13,377 INFO L168 Benchmark]: Boogie Preprocessor took 114.92 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 94.0 MB in the beginning and 182.3 MB in the end (delta: -88.2 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2020-07-21 11:41:13,378 INFO L168 Benchmark]: RCFGBuilder took 233.14 ms. Allocated memory is still 203.4 MB. Free memory was 182.3 MB in the beginning and 171.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-07-21 11:41:13,379 INFO L168 Benchmark]: TraceAbstraction took 1417.31 ms. Allocated memory is still 203.4 MB. Free memory was 170.9 MB in the beginning and 108.1 MB in the end (delta: 62.9 MB). Peak memory consumption was 62.9 MB. Max. memory is 7.1 GB. [2020-07-21 11:41:13,383 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 138.9 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 237.40 ms. Allocated memory is still 138.9 MB. Free memory was 103.3 MB in the beginning and 94.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.92 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 94.0 MB in the beginning and 182.3 MB in the end (delta: -88.2 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 233.14 ms. Allocated memory is still 203.4 MB. Free memory was 182.3 MB in the beginning and 171.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1417.31 ms. Allocated memory is still 203.4 MB. Free memory was 170.9 MB in the beginning and 108.1 MB in the end (delta: 62.9 MB). Peak memory consumption was 62.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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: 19]: Loop Invariant Derived loop invariant: (j + i) % 4294967296 == k % 4294967296 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 21 SDtfs, 10 SDslu, 68 SDs, 0 SdLazy, 37 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 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, 23 HoareAnnotationTreeSize, 9 FomulaSimplifications, 40 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 1869 SizeOfPredicates, 4 NumberOfNonLiveVariables, 80 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 6/8 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...