/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/trex03-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 15:35:53,357 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 15:35:53,359 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 15:35:53,391 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 15:35:53,391 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 15:35:53,393 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 15:35:53,394 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 15:35:53,396 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 15:35:53,397 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 15:35:53,398 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 15:35:53,399 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 15:35:53,400 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 15:35:53,401 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 15:35:53,402 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 15:35:53,403 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 15:35:53,404 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 15:35:53,405 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 15:35:53,405 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 15:35:53,407 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 15:35:53,409 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 15:35:53,410 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 15:35:53,411 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 15:35:53,412 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 15:35:53,413 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 15:35:53,416 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 15:35:53,416 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 15:35:53,416 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 15:35:53,417 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 15:35:53,417 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 15:35:53,418 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 15:35:53,419 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 15:35:53,419 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 15:35:53,420 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 15:35:53,421 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 15:35:53,422 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 15:35:53,422 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 15:35:53,423 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 15:35:53,423 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 15:35:53,423 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 15:35:53,424 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 15:35:53,425 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 15:35:53,428 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 [2020-08-18 15:35:53,476 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 15:35:53,476 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 15:35:53,478 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 15:35:53,478 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 15:35:53,478 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 15:35:53,478 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 15:35:53,479 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 15:35:53,484 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 15:35:53,484 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 15:35:53,484 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 15:35:53,485 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 15:35:53,485 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 15:35:53,485 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 15:35:53,485 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 15:35:53,485 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 15:35:53,485 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 15:35:53,487 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 15:35:53,487 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 15:35:53,488 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 15:35:53,488 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 15:35:53,488 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 15:35:53,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 15:35:53,488 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 15:35:53,489 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 15:35:53,489 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 15:35:53,490 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 15:35:53,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 15:35:53,490 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 15:35:53,490 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 15:35:53,490 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 -> false [2020-08-18 15:35:53,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 15:35:53,844 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 15:35:53,848 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 15:35:53,849 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 15:35:53,850 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 15:35:53,851 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex03-2.c [2020-08-18 15:35:53,914 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/13ecd35c3/c360ccc5099a4801ae370395bf395818/FLAGadcffb901 [2020-08-18 15:35:54,345 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 15:35:54,346 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/trex03-2.c [2020-08-18 15:35:54,353 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/13ecd35c3/c360ccc5099a4801ae370395bf395818/FLAGadcffb901 [2020-08-18 15:35:54,752 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/13ecd35c3/c360ccc5099a4801ae370395bf395818 [2020-08-18 15:35:54,763 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 15:35:54,767 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 15:35:54,769 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 15:35:54,769 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 15:35:54,772 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 15:35:54,774 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:35:54" (1/1) ... [2020-08-18 15:35:54,777 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56344ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:35:54, skipping insertion in model container [2020-08-18 15:35:54,778 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:35:54" (1/1) ... [2020-08-18 15:35:54,787 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 15:35:54,805 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 15:35:54,983 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:35:54,988 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 15:35:55,005 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:35:55,017 INFO L208 MainTranslator]: Completed translation [2020-08-18 15:35:55,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:35:55 WrapperNode [2020-08-18 15:35:55,017 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 15:35:55,018 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 15:35:55,018 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 15:35:55,018 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 15:35:55,028 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:35:55" (1/1) ... [2020-08-18 15:35:55,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:35:55" (1/1) ... [2020-08-18 15:35:55,108 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:35:55" (1/1) ... [2020-08-18 15:35:55,108 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:35:55" (1/1) ... [2020-08-18 15:35:55,112 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:35:55" (1/1) ... [2020-08-18 15:35:55,117 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:35:55" (1/1) ... [2020-08-18 15:35:55,118 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:35:55" (1/1) ... [2020-08-18 15:35:55,120 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 15:35:55,120 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 15:35:55,120 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 15:35:55,121 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 15:35:55,121 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:35:55" (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 [2020-08-18 15:35:55,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 15:35:55,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 15:35:55,183 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-18 15:35:55,183 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 15:35:55,183 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 15:35:55,183 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-18 15:35:55,183 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-08-18 15:35:55,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-18 15:35:55,184 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 15:35:55,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 15:35:55,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 15:35:55,377 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 15:35:55,377 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-18 15:35:55,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:35:55 BoogieIcfgContainer [2020-08-18 15:35:55,380 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 15:35:55,381 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 15:35:55,381 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 15:35:55,384 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 15:35:55,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 03:35:54" (1/3) ... [2020-08-18 15:35:55,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c6f2c6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:35:55, skipping insertion in model container [2020-08-18 15:35:55,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:35:55" (2/3) ... [2020-08-18 15:35:55,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c6f2c6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:35:55, skipping insertion in model container [2020-08-18 15:35:55,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:35:55" (3/3) ... [2020-08-18 15:35:55,388 INFO L109 eAbstractionObserver]: Analyzing ICFG trex03-2.c [2020-08-18 15:35:55,397 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 15:35:55,404 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 15:35:55,416 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 15:35:55,438 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 15:35:55,438 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 15:35:55,438 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 15:35:55,438 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 15:35:55,439 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 15:35:55,439 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 15:35:55,439 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 15:35:55,439 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 15:35:55,454 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-08-18 15:35:55,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-08-18 15:35:55,459 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:35:55,460 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:35:55,460 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:35:55,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:35:55,466 INFO L82 PathProgramCache]: Analyzing trace with hash -859010367, now seen corresponding path program 1 times [2020-08-18 15:35:55,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:35:55,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566968951] [2020-08-18 15:35:55,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:35:55,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:35:55,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:35:55,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:35:55,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:35:55,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566968951] [2020-08-18 15:35:55,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:35:55,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-08-18 15:35:55,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084565121] [2020-08-18 15:35:55,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-08-18 15:35:55,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:35:55,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-08-18 15:35:55,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-08-18 15:35:55,608 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2020-08-18 15:35:55,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:35:55,631 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2020-08-18 15:35:55,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-08-18 15:35:55,633 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-08-18 15:35:55,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:35:55,641 INFO L225 Difference]: With dead ends: 33 [2020-08-18 15:35:55,641 INFO L226 Difference]: Without dead ends: 14 [2020-08-18 15:35:55,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-08-18 15:35:55,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-08-18 15:35:55,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-08-18 15:35:55,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-08-18 15:35:55,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2020-08-18 15:35:55,683 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 10 [2020-08-18 15:35:55,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:35:55,684 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2020-08-18 15:35:55,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-08-18 15:35:55,684 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-08-18 15:35:55,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-08-18 15:35:55,685 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:35:55,685 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:35:55,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 15:35:55,686 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:35:55,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:35:55,686 INFO L82 PathProgramCache]: Analyzing trace with hash -873786703, now seen corresponding path program 1 times [2020-08-18 15:35:55,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:35:55,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362950481] [2020-08-18 15:35:55,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:35:55,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:35:55,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:35:55,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:35:55,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:35:55,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362950481] [2020-08-18 15:35:55,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:35:55,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 15:35:55,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440827768] [2020-08-18 15:35:55,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 15:35:55,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:35:55,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 15:35:55,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 15:35:55,847 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 5 states. [2020-08-18 15:35:55,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:35:55,905 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2020-08-18 15:35:55,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 15:35:55,906 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-08-18 15:35:55,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:35:55,907 INFO L225 Difference]: With dead ends: 14 [2020-08-18 15:35:55,908 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 15:35:55,909 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 15:35:55,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 15:35:55,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 15:35:55,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 15:35:55,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 15:35:55,912 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-08-18 15:35:55,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:35:55,912 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 15:35:55,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 15:35:55,913 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 15:35:55,913 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 15:35:55,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 15:35:55,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 15:35:55,961 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-18 15:35:55,962 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-18 15:35:55,962 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-18 15:35:55,962 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-18 15:35:55,962 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-18 15:35:55,963 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-18 15:35:55,963 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-08-18 15:35:55,963 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 12 29) no Hoare annotation was computed. [2020-08-18 15:35:55,964 INFO L268 CegarLoopResult]: For program point L21(lines 21 22) no Hoare annotation was computed. [2020-08-18 15:35:55,964 INFO L268 CegarLoopResult]: For program point L21-2(lines 20 22) no Hoare annotation was computed. [2020-08-18 15:35:55,964 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 12 29) no Hoare annotation was computed. [2020-08-18 15:35:55,964 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 12 29) the Hoare annotation is: true [2020-08-18 15:35:55,965 INFO L268 CegarLoopResult]: For program point L20(lines 20 22) no Hoare annotation was computed. [2020-08-18 15:35:55,965 INFO L271 CegarLoopResult]: At program point L18-2(lines 18 25) the Hoare annotation is: true [2020-08-18 15:35:55,966 INFO L264 CegarLoopResult]: At program point L18-3(lines 18 25) the Hoare annotation is: (or (= main_~x2~0 (* 4294967296 (div main_~x2~0 4294967296))) (= main_~x3~0 (* 4294967296 (div main_~x3~0 4294967296))) (= main_~x1~0 (* 4294967296 (div main_~x1~0 4294967296)))) [2020-08-18 15:35:55,966 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-08-18 15:35:55,966 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-08-18 15:35:55,966 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-08-18 15:35:55,966 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-08-18 15:35:55,967 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-08-18 15:35:55,967 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-08-18 15:35:55,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 03:35:55 BoogieIcfgContainer [2020-08-18 15:35:55,978 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 15:35:55,982 INFO L168 Benchmark]: Toolchain (without parser) took 1213.96 ms. Allocated memory was 137.9 MB in the beginning and 200.3 MB in the end (delta: 62.4 MB). Free memory was 100.8 MB in the beginning and 131.7 MB in the end (delta: -31.0 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. [2020-08-18 15:35:55,983 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 15:35:55,984 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.09 ms. Allocated memory is still 137.9 MB. Free memory was 100.3 MB in the beginning and 90.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-08-18 15:35:55,985 INFO L168 Benchmark]: Boogie Preprocessor took 101.99 ms. Allocated memory was 137.9 MB in the beginning and 200.3 MB in the end (delta: 62.4 MB). Free memory was 90.8 MB in the beginning and 179.2 MB in the end (delta: -88.4 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. [2020-08-18 15:35:55,986 INFO L168 Benchmark]: RCFGBuilder took 259.76 ms. Allocated memory is still 200.3 MB. Free memory was 179.2 MB in the beginning and 165.6 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2020-08-18 15:35:55,988 INFO L168 Benchmark]: TraceAbstraction took 597.22 ms. Allocated memory is still 200.3 MB. Free memory was 164.9 MB in the beginning and 131.7 MB in the end (delta: 33.2 MB). Peak memory consumption was 33.2 MB. Max. memory is 7.1 GB. [2020-08-18 15:35:55,993 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 249.09 ms. Allocated memory is still 137.9 MB. Free memory was 100.3 MB in the beginning and 90.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 101.99 ms. Allocated memory was 137.9 MB in the beginning and 200.3 MB in the end (delta: 62.4 MB). Free memory was 90.8 MB in the beginning and 179.2 MB in the end (delta: -88.4 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 259.76 ms. Allocated memory is still 200.3 MB. Free memory was 179.2 MB in the beginning and 165.6 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 597.22 ms. Allocated memory is still 200.3 MB. Free memory was 164.9 MB in the beginning and 131.7 MB in the end (delta: 33.2 MB). Peak memory consumption was 33.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 18]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 36 SDtfs, 1 SDslu, 32 SDs, 0 SdLazy, 7 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 8 PreInvPairs, 9 NumberOfFragments, 28 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 405 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...