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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/veris.c_sendmail_tTflag_arr_one_loop.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:18:02,730 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:18:02,733 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:18:02,751 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:18:02,752 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:18:02,754 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:18:02,756 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:18:02,764 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:18:02,768 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:18:02,769 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:18:02,770 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:18:02,771 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:18:02,772 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:18:02,773 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:18:02,774 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:18:02,775 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:18:02,775 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:18:02,776 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:18:02,778 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:18:02,780 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:18:02,781 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:18:02,782 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:18:02,783 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:18:02,784 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:18:02,786 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:18:02,786 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:18:02,786 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:18:02,787 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:18:02,788 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:18:02,789 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2019-10-13 19:18:02,794 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:18:02,795 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:18:02,795 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:18:02,796 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 [2019-10-13 19:18:02,818 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:18:02,818 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:18:02,821 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:18:02,821 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:18:02,821 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:18:02,822 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:18:02,822 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:18:02,822 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:18:02,822 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:18:02,823 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:18:02,824 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:18:02,824 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:18:02,824 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:18:02,825 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:18:02,825 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:18:02,825 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:18:02,825 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:18:02,825 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:18:02,826 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:18:02,826 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:18:02,826 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:18:02,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:18:02,827 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:18:02,827 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:18:02,827 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:18:02,827 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:18:02,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:18:02,828 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:18:02,828 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:18:03,119 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:18:03,132 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:18:03,136 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:18:03,137 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:18:03,137 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:18:03,138 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/veris.c_sendmail_tTflag_arr_one_loop.c [2019-10-13 19:18:03,194 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86a714c3d/3abd95e9782e43e3aa88425ad28d2542/FLAG22ee74624 [2019-10-13 19:18:03,611 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:18:03,612 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/veris.c_sendmail_tTflag_arr_one_loop.c [2019-10-13 19:18:03,620 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86a714c3d/3abd95e9782e43e3aa88425ad28d2542/FLAG22ee74624 [2019-10-13 19:18:04,012 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86a714c3d/3abd95e9782e43e3aa88425ad28d2542 [2019-10-13 19:18:04,022 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:18:04,024 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:18:04,025 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:18:04,025 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:18:04,028 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:18:04,029 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:18:04" (1/1) ... [2019-10-13 19:18:04,032 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7639f8e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:18:04, skipping insertion in model container [2019-10-13 19:18:04,033 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:18:04" (1/1) ... [2019-10-13 19:18:04,040 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:18:04,060 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:18:04,263 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:18:04,267 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:18:04,289 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:18:04,310 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:18:04,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:18:04 WrapperNode [2019-10-13 19:18:04,311 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:18:04,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:18:04,312 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:18:04,312 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:18:04,399 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:18:04" (1/1) ... [2019-10-13 19:18:04,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:18:04" (1/1) ... [2019-10-13 19:18:04,405 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:18:04" (1/1) ... [2019-10-13 19:18:04,406 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:18:04" (1/1) ... [2019-10-13 19:18:04,412 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:18:04" (1/1) ... [2019-10-13 19:18:04,416 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:18:04" (1/1) ... [2019-10-13 19:18:04,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:18:04" (1/1) ... [2019-10-13 19:18:04,420 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:18:04,420 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:18:04,421 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:18:04,421 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:18:04,422 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:18:04" (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 [2019-10-13 19:18:04,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:18:04,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:18:04,483 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 19:18:04,484 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:18:04,484 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:18:04,484 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-13 19:18:04,484 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 19:18:04,484 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:18:04,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:18:04,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:18:04,485 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:18:04,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:18:04,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:18:04,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:18:04,747 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:18:04,748 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-13 19:18:04,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:18:04 BoogieIcfgContainer [2019-10-13 19:18:04,751 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:18:04,758 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:18:04,759 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:18:04,767 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:18:04,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:18:04" (1/3) ... [2019-10-13 19:18:04,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12f752f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:18:04, skipping insertion in model container [2019-10-13 19:18:04,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:18:04" (2/3) ... [2019-10-13 19:18:04,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12f752f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:18:04, skipping insertion in model container [2019-10-13 19:18:04,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:18:04" (3/3) ... [2019-10-13 19:18:04,774 INFO L109 eAbstractionObserver]: Analyzing ICFG veris.c_sendmail_tTflag_arr_one_loop.c [2019-10-13 19:18:04,799 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:18:04,807 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:18:04,820 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:18:04,852 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:18:04,853 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:18:04,853 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:18:04,853 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:18:04,853 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:18:04,853 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:18:04,853 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:18:04,853 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:18:04,868 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-10-13 19:18:04,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-13 19:18:04,874 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:18:04,875 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:18:04,876 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:18:04,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:18:04,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1522547275, now seen corresponding path program 1 times [2019-10-13 19:18:04,888 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:18:04,888 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148943759] [2019-10-13 19:18:04,889 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:18:04,889 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:18:04,889 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:18:04,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:18:05,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:18:05,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:18:05,079 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148943759] [2019-10-13 19:18:05,080 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:18:05,080 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 19:18:05,081 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374312378] [2019-10-13 19:18:05,085 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:18:05,086 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:18:05,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:18:05,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:18:05,104 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 3 states. [2019-10-13 19:18:05,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:18:05,205 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2019-10-13 19:18:05,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:18:05,208 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-10-13 19:18:05,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:18:05,215 INFO L225 Difference]: With dead ends: 36 [2019-10-13 19:18:05,216 INFO L226 Difference]: Without dead ends: 15 [2019-10-13 19:18:05,219 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:18:05,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-10-13 19:18:05,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-10-13 19:18:05,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-10-13 19:18:05,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2019-10-13 19:18:05,257 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2019-10-13 19:18:05,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:18:05,258 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2019-10-13 19:18:05,259 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:18:05,259 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2019-10-13 19:18:05,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-13 19:18:05,261 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:18:05,261 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:18:05,261 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:18:05,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:18:05,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1742365231, now seen corresponding path program 1 times [2019-10-13 19:18:05,263 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:18:05,263 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524073499] [2019-10-13 19:18:05,264 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:18:05,264 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:18:05,264 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:18:05,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:18:05,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:18:05,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:18:05,402 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524073499] [2019-10-13 19:18:05,403 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:18:05,403 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:18:05,403 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114687535] [2019-10-13 19:18:05,405 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:18:05,405 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:18:05,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:18:05,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:18:05,406 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 5 states. [2019-10-13 19:18:05,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:18:05,479 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2019-10-13 19:18:05,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:18:05,479 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-10-13 19:18:05,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:18:05,480 INFO L225 Difference]: With dead ends: 15 [2019-10-13 19:18:05,480 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 19:18:05,481 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:18:05,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 19:18:05,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 19:18:05,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 19:18:05,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 19:18:05,482 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2019-10-13 19:18:05,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:18:05,483 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 19:18:05,483 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:18:05,483 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 19:18:05,483 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 19:18:05,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 19:18:05,557 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-13 19:18:05,558 INFO L439 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 19:18:05,558 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:18:05,558 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:18:05,558 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-13 19:18:05,559 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-13 19:18:05,559 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-13 19:18:05,559 INFO L446 ceAbstractionStarter]: At program point L27-2(lines 27 33) the Hoare annotation is: true [2019-10-13 19:18:05,560 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 37) no Hoare annotation was computed. [2019-10-13 19:18:05,561 INFO L446 ceAbstractionStarter]: At program point L27-3(lines 27 33) the Hoare annotation is: true [2019-10-13 19:18:05,561 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 10 37) no Hoare annotation was computed. [2019-10-13 19:18:05,561 INFO L439 ceAbstractionStarter]: At program point mainENTRY(lines 10 37) the Hoare annotation is: (= |#valid| |old(#valid)|) [2019-10-13 19:18:05,562 INFO L443 ceAbstractionStarter]: For program point L18-2(lines 18 20) no Hoare annotation was computed. [2019-10-13 19:18:05,562 INFO L446 ceAbstractionStarter]: At program point L18-3(lines 18 20) the Hoare annotation is: true [2019-10-13 19:18:05,562 INFO L443 ceAbstractionStarter]: For program point L18-4(lines 18 20) no Hoare annotation was computed. [2019-10-13 19:18:05,562 INFO L443 ceAbstractionStarter]: For program point L35(line 35) no Hoare annotation was computed. [2019-10-13 19:18:05,563 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true [2019-10-13 19:18:05,563 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 4 9) no Hoare annotation was computed. [2019-10-13 19:18:05,564 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2019-10-13 19:18:05,565 INFO L443 ceAbstractionStarter]: For program point L6(line 6) no Hoare annotation was computed. [2019-10-13 19:18:05,565 INFO L443 ceAbstractionStarter]: For program point L5(lines 5 7) no Hoare annotation was computed. [2019-10-13 19:18:05,565 INFO L443 ceAbstractionStarter]: For program point L5-2(lines 4 9) no Hoare annotation was computed. [2019-10-13 19:18:05,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:18:05 BoogieIcfgContainer [2019-10-13 19:18:05,584 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 19:18:05,587 INFO L168 Benchmark]: Toolchain (without parser) took 1561.88 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 103.8 MB in the beginning and 123.5 MB in the end (delta: -19.7 MB). Peak memory consumption was 43.7 MB. Max. memory is 7.1 GB. [2019-10-13 19:18:05,590 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-10-13 19:18:05,592 INFO L168 Benchmark]: CACSL2BoogieTranslator took 286.40 ms. Allocated memory is still 138.9 MB. Free memory was 103.4 MB in the beginning and 93.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2019-10-13 19:18:05,594 INFO L168 Benchmark]: Boogie Preprocessor took 108.51 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 93.4 MB in the beginning and 180.9 MB in the end (delta: -87.5 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2019-10-13 19:18:05,596 INFO L168 Benchmark]: RCFGBuilder took 336.74 ms. Allocated memory is still 202.4 MB. Free memory was 180.3 MB in the beginning and 166.2 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2019-10-13 19:18:05,597 INFO L168 Benchmark]: TraceAbstraction took 825.38 ms. Allocated memory is still 202.4 MB. Free memory was 166.2 MB in the beginning and 123.5 MB in the end (delta: 42.7 MB). Peak memory consumption was 42.7 MB. Max. memory is 7.1 GB. [2019-10-13 19:18:05,608 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 286.40 ms. Allocated memory is still 138.9 MB. Free memory was 103.4 MB in the beginning and 93.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 108.51 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 93.4 MB in the beginning and 180.9 MB in the end (delta: -87.5 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 336.74 ms. Allocated memory is still 202.4 MB. Free memory was 180.3 MB in the beginning and 166.2 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 825.38 ms. Allocated memory is still 202.4 MB. Free memory was 166.2 MB in the beginning and 123.5 MB in the end (delta: 42.7 MB). Peak memory consumption was 42.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. Result: SAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 32 SDtfs, 7 SDslu, 27 SDs, 0 SdLazy, 28 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s 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, 8 LocationsWithAnnotation, 9 PreInvPairs, 11 NumberOfFragments, 19 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 24 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 576 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...