/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-invgen/id_build.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 11:59:36,689 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 11:59:36,692 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 11:59:36,711 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 11:59:36,711 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 11:59:36,713 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 11:59:36,715 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 11:59:36,725 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 11:59:36,729 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 11:59:36,733 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 11:59:36,734 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 11:59:36,735 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 11:59:36,735 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 11:59:36,736 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 11:59:36,739 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 11:59:36,741 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 11:59:36,742 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 11:59:36,744 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 11:59:36,745 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 11:59:36,750 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 11:59:36,755 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 11:59:36,758 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 11:59:36,759 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 11:59:36,759 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 11:59:36,762 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 11:59:36,772 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 11:59:36,773 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 11:59:36,774 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 11:59:36,775 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 [2020-07-20 11:59:36,811 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 11:59:36,814 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 11:59:36,816 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 11:59:36,816 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 11:59:36,816 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 11:59:36,816 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 11:59:36,817 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 11:59:36,817 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 11:59:36,817 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 11:59:36,817 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 11:59:36,817 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 11:59:36,817 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 11:59:36,818 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 11:59:36,818 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 11:59:36,818 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 11:59:36,819 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 11:59:36,819 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 11:59:36,819 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 11:59:36,820 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 11:59:36,820 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 11:59:36,820 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 11:59:36,820 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:59:36,820 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 11:59:36,821 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 11:59:36,821 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 11:59:36,821 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 11:59:36,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:59:36,825 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 11:59:36,825 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 11:59:36,825 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 [2020-07-20 11:59:37,105 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 11:59:37,119 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 11:59:37,123 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 11:59:37,125 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 11:59:37,125 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 11:59:37,127 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/id_build.i [2020-07-20 11:59:37,186 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a27c562e/30ae986de39243eea824fe442a89bc10/FLAG042f289cd [2020-07-20 11:59:37,615 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 11:59:37,616 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i [2020-07-20 11:59:37,623 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a27c562e/30ae986de39243eea824fe442a89bc10/FLAG042f289cd [2020-07-20 11:59:38,008 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a27c562e/30ae986de39243eea824fe442a89bc10 [2020-07-20 11:59:38,018 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 11:59:38,022 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 11:59:38,023 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 11:59:38,023 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 11:59:38,026 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 11:59:38,027 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:59:38" (1/1) ... [2020-07-20 11:59:38,030 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70ca10df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:59:38, skipping insertion in model container [2020-07-20 11:59:38,031 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:59:38" (1/1) ... [2020-07-20 11:59:38,038 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 11:59:38,056 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 11:59:38,240 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:59:38,244 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 11:59:38,257 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:59:38,270 INFO L208 MainTranslator]: Completed translation [2020-07-20 11:59:38,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:59:38 WrapperNode [2020-07-20 11:59:38,270 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 11:59:38,271 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 11:59:38,271 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 11:59:38,271 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 11:59:38,282 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:59:38" (1/1) ... [2020-07-20 11:59:38,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:59:38" (1/1) ... [2020-07-20 11:59:38,287 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:59:38" (1/1) ... [2020-07-20 11:59:38,288 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:59:38" (1/1) ... [2020-07-20 11:59:38,291 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:59:38" (1/1) ... [2020-07-20 11:59:38,296 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:59:38" (1/1) ... [2020-07-20 11:59:38,297 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:59:38" (1/1) ... [2020-07-20 11:59:38,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 11:59:38,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 11:59:38,383 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 11:59:38,384 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 11:59:38,387 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:59:38" (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 [2020-07-20 11:59:38,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 11:59:38,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 11:59:38,444 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 11:59:38,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 11:59:38,444 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 11:59:38,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 11:59:38,445 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 11:59:38,445 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 11:59:38,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 11:59:38,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 11:59:38,445 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 11:59:38,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 11:59:38,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 11:59:38,660 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 11:59:38,660 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-20 11:59:38,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:59:38 BoogieIcfgContainer [2020-07-20 11:59:38,666 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 11:59:38,668 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 11:59:38,668 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 11:59:38,672 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 11:59:38,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 11:59:38" (1/3) ... [2020-07-20 11:59:38,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a97533c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:59:38, skipping insertion in model container [2020-07-20 11:59:38,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:59:38" (2/3) ... [2020-07-20 11:59:38,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a97533c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:59:38, skipping insertion in model container [2020-07-20 11:59:38,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:59:38" (3/3) ... [2020-07-20 11:59:38,675 INFO L109 eAbstractionObserver]: Analyzing ICFG id_build.i [2020-07-20 11:59:38,686 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 11:59:38,695 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 11:59:38,713 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 11:59:38,740 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 11:59:38,740 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 11:59:38,740 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 11:59:38,740 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 11:59:38,741 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 11:59:38,741 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 11:59:38,741 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 11:59:38,741 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 11:59:38,761 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-07-20 11:59:38,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-20 11:59:38,767 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:59:38,768 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:59:38,769 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:59:38,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:59:38,775 INFO L82 PathProgramCache]: Analyzing trace with hash 292259706, now seen corresponding path program 1 times [2020-07-20 11:59:38,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:59:38,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221584226] [2020-07-20 11:59:38,785 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 [2020-07-20 11:59:38,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:59:38,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 11:59:38,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:59:38,894 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:59:38,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:59:38,931 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:59:38,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [221584226] [2020-07-20 11:59:38,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:59:38,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 11:59:38,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860439725] [2020-07-20 11:59:38,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 11:59:38,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:59:38,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 11:59:38,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:59:38,955 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 5 states. [2020-07-20 11:59:39,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:59:39,045 INFO L93 Difference]: Finished difference Result 43 states and 55 transitions. [2020-07-20 11:59:39,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 11:59:39,047 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-07-20 11:59:39,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:59:39,054 INFO L225 Difference]: With dead ends: 43 [2020-07-20 11:59:39,054 INFO L226 Difference]: Without dead ends: 21 [2020-07-20 11:59:39,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 11:59:39,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-07-20 11:59:39,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-07-20 11:59:39,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-07-20 11:59:39,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-07-20 11:59:39,099 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 11 [2020-07-20 11:59:39,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:59:39,099 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-07-20 11:59:39,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 11:59:39,100 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-07-20 11:59:39,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-20 11:59:39,101 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:59:39,101 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:59:39,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:59:39,303 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:59:39,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:59:39,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1546928273, now seen corresponding path program 1 times [2020-07-20 11:59:39,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:59:39,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [119284733] [2020-07-20 11:59:39,305 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 [2020-07-20 11:59:39,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:59:39,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 11:59:39,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:59:39,346 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:59:39,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:59:39,366 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:59:39,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [119284733] [2020-07-20 11:59:39,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:59:39,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 11:59:39,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172240410] [2020-07-20 11:59:39,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 11:59:39,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:59:39,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 11:59:39,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:59:39,370 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 5 states. [2020-07-20 11:59:39,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:59:39,420 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2020-07-20 11:59:39,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 11:59:39,421 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-07-20 11:59:39,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:59:39,422 INFO L225 Difference]: With dead ends: 21 [2020-07-20 11:59:39,422 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 11:59:39,423 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 11:59:39,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 11:59:39,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 11:59:39,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 11:59:39,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 11:59:39,425 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-07-20 11:59:39,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:59:39,425 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 11:59:39,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 11:59:39,426 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 11:59:39,426 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 11:59:39,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:59:39,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 11:59:39,734 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-20 11:59:39,735 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 11:59:39,735 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 11:59:39,735 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 11:59:39,735 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 11:59:39,735 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 11:59:39,736 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-20 11:59:39,736 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-20 11:59:39,736 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-07-20 11:59:39,736 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-20 11:59:39,736 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 23) no Hoare annotation was computed. [2020-07-20 11:59:39,737 INFO L268 CegarLoopResult]: For program point L19(lines 17 20) no Hoare annotation was computed. [2020-07-20 11:59:39,737 INFO L264 CegarLoopResult]: At program point L17-2(lines 17 20) the Hoare annotation is: (and (<= 0 main_~i~0) (< main_~i~0 main_~nlen~0)) [2020-07-20 11:59:39,737 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 23) no Hoare annotation was computed. [2020-07-20 11:59:39,737 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 23) the Hoare annotation is: true [2020-07-20 11:59:39,737 INFO L264 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (and (<= 0 main_~i~0) (< main_~i~0 main_~nlen~0)) [2020-07-20 11:59:39,738 INFO L264 CegarLoopResult]: At program point L18-1(line 18) the Hoare annotation is: (and (<= 0 main_~i~0) (< main_~i~0 main_~nlen~0)) [2020-07-20 11:59:39,738 INFO L268 CegarLoopResult]: For program point L16-2(lines 16 21) no Hoare annotation was computed. [2020-07-20 11:59:39,738 INFO L264 CegarLoopResult]: At program point L16-3(lines 16 21) the Hoare annotation is: (<= 0 main_~i~0) [2020-07-20 11:59:39,738 INFO L268 CegarLoopResult]: For program point L16-4(lines 16 21) no Hoare annotation was computed. [2020-07-20 11:59:39,739 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-07-20 11:59:39,739 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-07-20 11:59:39,739 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-07-20 11:59:39,739 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-07-20 11:59:39,739 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-07-20 11:59:39,740 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-07-20 11:59:39,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 11:59:39 BoogieIcfgContainer [2020-07-20 11:59:39,758 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 11:59:39,761 INFO L168 Benchmark]: Toolchain (without parser) took 1739.90 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 103.5 MB in the beginning and 122.8 MB in the end (delta: -19.3 MB). Peak memory consumption was 37.9 MB. Max. memory is 7.1 GB. [2020-07-20 11:59:39,762 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 146.8 MB. Free memory was 121.7 MB in the beginning and 121.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 11:59:39,763 INFO L168 Benchmark]: CACSL2BoogieTranslator took 247.79 ms. Allocated memory is still 146.8 MB. Free memory was 103.1 MB in the beginning and 93.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-07-20 11:59:39,764 INFO L168 Benchmark]: Boogie Preprocessor took 112.01 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 93.7 MB in the beginning and 183.9 MB in the end (delta: -90.2 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2020-07-20 11:59:39,765 INFO L168 Benchmark]: RCFGBuilder took 283.47 ms. Allocated memory is still 203.9 MB. Free memory was 183.9 MB in the beginning and 169.8 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2020-07-20 11:59:39,766 INFO L168 Benchmark]: TraceAbstraction took 1089.81 ms. Allocated memory is still 203.9 MB. Free memory was 169.8 MB in the beginning and 122.8 MB in the end (delta: 47.0 MB). Peak memory consumption was 47.0 MB. Max. memory is 7.1 GB. [2020-07-20 11:59:39,770 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 146.8 MB. Free memory was 121.7 MB in the beginning and 121.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 247.79 ms. Allocated memory is still 146.8 MB. Free memory was 103.1 MB in the beginning and 93.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.01 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 93.7 MB in the beginning and 183.9 MB in the end (delta: -90.2 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 283.47 ms. Allocated memory is still 203.9 MB. Free memory was 183.9 MB in the beginning and 169.8 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1089.81 ms. Allocated memory is still 203.9 MB. Free memory was 169.8 MB in the beginning and 122.8 MB in the end (delta: 47.0 MB). Peak memory consumption was 47.0 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: 16]: Loop Invariant Derived loop invariant: 0 <= i - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 0 <= i && i < nlen - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 35 SDtfs, 14 SDslu, 84 SDs, 0 SdLazy, 35 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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, 9 LocationsWithAnnotation, 12 PreInvPairs, 16 NumberOfFragments, 29 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 585 SizeOfPredicates, 4 NumberOfNonLiveVariables, 67 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 2/2 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...