/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=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector/jain_1-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 22:08:11,694 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 22:08:11,699 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 22:08:11,740 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 22:08:11,741 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 22:08:11,751 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 22:08:11,753 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 22:08:11,756 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 22:08:11,758 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 22:08:11,759 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 22:08:11,760 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 22:08:11,762 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 22:08:11,763 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 22:08:11,767 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 22:08:11,769 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 22:08:11,771 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 22:08:11,772 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 22:08:11,774 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 22:08:11,776 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 22:08:11,782 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 22:08:11,785 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 22:08:11,786 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 22:08:11,787 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 22:08:11,788 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 22:08:11,800 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 22:08:11,800 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 22:08:11,800 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 22:08:11,801 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 22:08:11,801 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 22:08:11,804 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 22:08:11,804 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 22:08:11,806 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 22:08:11,807 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 22:08:11,807 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 22:08:11,808 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 22:08:11,808 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 22:08:11,809 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 22:08:11,809 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 22:08:11,810 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 22:08:11,811 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 22:08:11,812 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 22:08:11,813 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 [2020-08-21 22:08:11,844 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 22:08:11,844 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 22:08:11,845 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 22:08:11,845 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 22:08:11,846 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 22:08:11,846 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 22:08:11,846 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 22:08:11,846 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 22:08:11,847 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 22:08:11,847 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 22:08:11,847 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 22:08:11,847 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 22:08:11,847 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 22:08:11,848 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 22:08:11,848 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 22:08:11,848 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 22:08:11,848 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 22:08:11,848 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 22:08:11,849 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 22:08:11,849 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 22:08:11,849 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 22:08:11,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:08:11,849 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 22:08:11,850 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 22:08:11,850 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 22:08:11,850 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 22:08:11,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 22:08:11,851 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 22:08:11,851 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 22:08:11,851 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=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; [2020-08-21 22:08:12,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 22:08:12,211 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 22:08:12,215 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 22:08:12,216 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 22:08:12,217 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 22:08:12,218 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/jain_1-1.c [2020-08-21 22:08:12,281 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6518ee15b/11b1d1f1a7b94c0d849fd82f4845bf02/FLAG96d1441e4 [2020-08-21 22:08:12,787 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 22:08:12,788 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/jain_1-1.c [2020-08-21 22:08:12,794 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6518ee15b/11b1d1f1a7b94c0d849fd82f4845bf02/FLAG96d1441e4 [2020-08-21 22:08:13,143 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6518ee15b/11b1d1f1a7b94c0d849fd82f4845bf02 [2020-08-21 22:08:13,155 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 22:08:13,158 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 22:08:13,161 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 22:08:13,161 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 22:08:13,165 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 22:08:13,166 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:08:13" (1/1) ... [2020-08-21 22:08:13,171 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13ed318b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:08:13, skipping insertion in model container [2020-08-21 22:08:13,171 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:08:13" (1/1) ... [2020-08-21 22:08:13,180 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 22:08:13,200 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 22:08:13,395 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:08:13,399 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 22:08:13,411 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:08:13,424 INFO L208 MainTranslator]: Completed translation [2020-08-21 22:08:13,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:08:13 WrapperNode [2020-08-21 22:08:13,425 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 22:08:13,426 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 22:08:13,426 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 22:08:13,426 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 22:08:13,439 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:08:13" (1/1) ... [2020-08-21 22:08:13,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:08:13" (1/1) ... [2020-08-21 22:08:13,516 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:08:13" (1/1) ... [2020-08-21 22:08:13,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:08:13" (1/1) ... [2020-08-21 22:08:13,520 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:08:13" (1/1) ... [2020-08-21 22:08:13,524 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:08:13" (1/1) ... [2020-08-21 22:08:13,525 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:08:13" (1/1) ... [2020-08-21 22:08:13,526 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 22:08:13,527 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 22:08:13,527 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 22:08:13,527 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 22:08:13,528 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:08:13" (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 [2020-08-21 22:08:13,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 22:08:13,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 22:08:13,581 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-21 22:08:13,582 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 22:08:13,582 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 22:08:13,582 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-08-21 22:08:13,582 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 22:08:13,582 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 22:08:13,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 22:08:13,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 22:08:13,721 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 22:08:13,721 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-21 22:08:13,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:08:13 BoogieIcfgContainer [2020-08-21 22:08:13,724 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 22:08:13,726 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 22:08:13,726 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 22:08:13,729 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 22:08:13,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 10:08:13" (1/3) ... [2020-08-21 22:08:13,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@108961fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:08:13, skipping insertion in model container [2020-08-21 22:08:13,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:08:13" (2/3) ... [2020-08-21 22:08:13,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@108961fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:08:13, skipping insertion in model container [2020-08-21 22:08:13,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:08:13" (3/3) ... [2020-08-21 22:08:13,732 INFO L109 eAbstractionObserver]: Analyzing ICFG jain_1-1.c [2020-08-21 22:08:13,742 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 22:08:13,749 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 22:08:13,762 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 22:08:13,784 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 22:08:13,786 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 22:08:13,786 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 22:08:13,786 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 22:08:13,786 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 22:08:13,786 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 22:08:13,787 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 22:08:13,787 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 22:08:13,804 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-08-21 22:08:13,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-08-21 22:08:13,809 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:08:13,810 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:08:13,810 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:08:13,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:08:13,817 INFO L82 PathProgramCache]: Analyzing trace with hash -13144129, now seen corresponding path program 1 times [2020-08-21 22:08:13,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:08:13,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890559005] [2020-08-21 22:08:13,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:08:13,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:08:14,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:08:14,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:08:14,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:08:14,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890559005] [2020-08-21 22:08:14,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:08:14,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 22:08:14,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811935492] [2020-08-21 22:08:14,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 22:08:14,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:08:14,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 22:08:14,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 22:08:14,147 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 6 states. [2020-08-21 22:08:14,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:08:14,229 INFO L93 Difference]: Finished difference Result 33 states and 45 transitions. [2020-08-21 22:08:14,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 22:08:14,231 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-08-21 22:08:14,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:08:14,240 INFO L225 Difference]: With dead ends: 33 [2020-08-21 22:08:14,241 INFO L226 Difference]: Without dead ends: 20 [2020-08-21 22:08:14,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-21 22:08:14,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-08-21 22:08:14,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2020-08-21 22:08:14,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-08-21 22:08:14,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-08-21 22:08:14,283 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 10 [2020-08-21 22:08:14,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:08:14,284 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-08-21 22:08:14,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 22:08:14,284 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-08-21 22:08:14,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-21 22:08:14,285 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:08:14,285 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:08:14,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 22:08:14,286 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:08:14,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:08:14,287 INFO L82 PathProgramCache]: Analyzing trace with hash 327764987, now seen corresponding path program 1 times [2020-08-21 22:08:14,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:08:14,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2048341975] [2020-08-21 22:08:14,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:08:14,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:08:14,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:08:14,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:08:14,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:08:14,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:08:14,437 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:08:14,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2048341975] [2020-08-21 22:08:14,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:08:14,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-21 22:08:14,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15374328] [2020-08-21 22:08:14,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 22:08:14,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:08:14,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 22:08:14,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-21 22:08:14,442 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 7 states. [2020-08-21 22:08:14,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:08:14,495 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-08-21 22:08:14,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 22:08:14,496 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-08-21 22:08:14,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:08:14,497 INFO L225 Difference]: With dead ends: 19 [2020-08-21 22:08:14,497 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 22:08:14,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-08-21 22:08:14,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 22:08:14,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 22:08:14,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 22:08:14,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 22:08:14,500 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-08-21 22:08:14,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:08:14,501 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 22:08:14,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 22:08:14,501 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 22:08:14,502 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 22:08:14,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 22:08:14,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 22:08:14,547 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-21 22:08:14,547 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-21 22:08:14,548 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-21 22:08:14,548 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-21 22:08:14,548 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-21 22:08:14,548 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-21 22:08:14,549 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 10 25) the Hoare annotation is: true [2020-08-21 22:08:14,549 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 10 25) no Hoare annotation was computed. [2020-08-21 22:08:14,549 INFO L264 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: (let ((.cse0 (+ main_~y~0 1))) (<= .cse0 (* 2 (div .cse0 2)))) [2020-08-21 22:08:14,549 INFO L264 CegarLoopResult]: At program point L21-1(lines 16 23) the Hoare annotation is: (let ((.cse0 (+ main_~y~0 1))) (<= .cse0 (* 2 (div .cse0 2)))) [2020-08-21 22:08:14,550 INFO L268 CegarLoopResult]: For program point L16-2(lines 16 23) no Hoare annotation was computed. [2020-08-21 22:08:14,550 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 10 25) no Hoare annotation was computed. [2020-08-21 22:08:14,550 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true [2020-08-21 22:08:14,550 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 4 9) no Hoare annotation was computed. [2020-08-21 22:08:14,550 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-08-21 22:08:14,551 INFO L268 CegarLoopResult]: For program point L5(lines 5 7) no Hoare annotation was computed. [2020-08-21 22:08:14,551 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2020-08-21 22:08:14,551 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 9) no Hoare annotation was computed. [2020-08-21 22:08:14,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 10:08:14 BoogieIcfgContainer [2020-08-21 22:08:14,570 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 22:08:14,574 INFO L168 Benchmark]: Toolchain (without parser) took 1415.26 ms. Allocated memory was 141.0 MB in the beginning and 202.9 MB in the end (delta: 61.9 MB). Free memory was 102.8 MB in the beginning and 123.5 MB in the end (delta: -20.7 MB). Peak memory consumption was 41.1 MB. Max. memory is 7.1 GB. [2020-08-21 22:08:14,575 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-21 22:08:14,576 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.00 ms. Allocated memory is still 141.0 MB. Free memory was 102.6 MB in the beginning and 92.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-08-21 22:08:14,578 INFO L168 Benchmark]: Boogie Preprocessor took 101.05 ms. Allocated memory was 141.0 MB in the beginning and 202.9 MB in the end (delta: 61.9 MB). Free memory was 92.9 MB in the beginning and 181.5 MB in the end (delta: -88.6 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-08-21 22:08:14,579 INFO L168 Benchmark]: RCFGBuilder took 197.67 ms. Allocated memory is still 202.9 MB. Free memory was 181.5 MB in the beginning and 171.5 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-08-21 22:08:14,580 INFO L168 Benchmark]: TraceAbstraction took 844.75 ms. Allocated memory is still 202.9 MB. Free memory was 170.9 MB in the beginning and 123.5 MB in the end (delta: 47.4 MB). Peak memory consumption was 47.4 MB. Max. memory is 7.1 GB. [2020-08-21 22:08:14,584 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 264.00 ms. Allocated memory is still 141.0 MB. Free memory was 102.6 MB in the beginning and 92.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 101.05 ms. Allocated memory was 141.0 MB in the beginning and 202.9 MB in the end (delta: 61.9 MB). Free memory was 92.9 MB in the beginning and 181.5 MB in the end (delta: -88.6 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 197.67 ms. Allocated memory is still 202.9 MB. Free memory was 181.5 MB in the beginning and 171.5 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 844.75 ms. Allocated memory is still 202.9 MB. Free memory was 170.9 MB in the beginning and 123.5 MB in the end (delta: 47.4 MB). Peak memory consumption was 47.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: y + 1 <= 2 * ((y + 1) / 2) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 17 SDtfs, 11 SDslu, 59 SDs, 0 SdLazy, 33 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 13 NumberOfFragments, 27 HoareAnnotationTreeSize, 9 FomulaSimplifications, 22 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1086 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 2/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...