/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test15.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 16:45:04,351 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 16:45:04,355 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 16:45:04,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 16:45:04,398 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 16:45:04,408 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 16:45:04,411 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 16:45:04,415 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 16:45:04,418 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 16:45:04,423 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 16:45:04,424 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 16:45:04,425 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 16:45:04,425 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 16:45:04,429 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 16:45:04,432 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 16:45:04,433 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 16:45:04,435 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 16:45:04,438 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 16:45:04,440 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 16:45:04,449 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 16:45:04,452 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 16:45:04,453 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 16:45:04,454 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 16:45:04,455 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 16:45:04,467 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 16:45:04,467 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 16:45:04,467 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 16:45:04,468 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 16:45:04,472 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 16:45:04,473 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 16:45:04,473 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 16:45:04,474 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 16:45:04,474 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 16:45:04,476 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 16:45:04,477 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 16:45:04,478 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 16:45:04,478 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 16:45:04,478 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 16:45:04,479 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 16:45:04,479 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 16:45:04,481 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 16:45:04,482 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 [2020-08-22 16:45:04,526 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 16:45:04,526 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 16:45:04,529 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 16:45:04,529 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 16:45:04,530 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 16:45:04,530 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 16:45:04,530 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 16:45:04,530 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 16:45:04,530 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 16:45:04,531 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 16:45:04,532 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 16:45:04,532 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 16:45:04,532 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 16:45:04,533 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 16:45:04,533 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 16:45:04,533 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 16:45:04,533 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 16:45:04,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 16:45:04,534 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 16:45:04,534 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 16:45:04,534 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 16:45:04,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:45:04,535 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 16:45:04,535 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 16:45:04,535 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 16:45:04,535 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 16:45:04,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 16:45:04,536 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 16:45:04,536 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 16:45:04,536 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 16:45:04,840 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 16:45:04,855 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 16:45:04,861 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 16:45:04,863 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 16:45:04,864 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 16:45:04,865 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test15.c [2020-08-22 16:45:04,947 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d8ee297e/ff53e5f33f2d408fbe8529472c5a2d89/FLAG5fed04779 [2020-08-22 16:45:05,472 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 16:45:05,473 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test15.c [2020-08-22 16:45:05,480 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d8ee297e/ff53e5f33f2d408fbe8529472c5a2d89/FLAG5fed04779 [2020-08-22 16:45:05,837 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d8ee297e/ff53e5f33f2d408fbe8529472c5a2d89 [2020-08-22 16:45:05,846 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 16:45:05,848 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 16:45:05,850 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 16:45:05,850 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 16:45:05,854 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 16:45:05,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:45:05" (1/1) ... [2020-08-22 16:45:05,858 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72d11499 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:45:05, skipping insertion in model container [2020-08-22 16:45:05,859 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:45:05" (1/1) ... [2020-08-22 16:45:05,867 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 16:45:05,885 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 16:45:06,056 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:45:06,069 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 16:45:06,086 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:45:06,104 INFO L208 MainTranslator]: Completed translation [2020-08-22 16:45:06,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:45:06 WrapperNode [2020-08-22 16:45:06,105 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 16:45:06,106 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 16:45:06,106 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 16:45:06,106 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 16:45:06,204 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:45:06" (1/1) ... [2020-08-22 16:45:06,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:45:06" (1/1) ... [2020-08-22 16:45:06,216 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:45:06" (1/1) ... [2020-08-22 16:45:06,217 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:45:06" (1/1) ... [2020-08-22 16:45:06,225 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:45:06" (1/1) ... [2020-08-22 16:45:06,231 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:45:06" (1/1) ... [2020-08-22 16:45:06,233 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:45:06" (1/1) ... [2020-08-22 16:45:06,235 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 16:45:06,236 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 16:45:06,236 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 16:45:06,236 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 16:45:06,237 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:45:06" (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 [2020-08-22 16:45:06,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 16:45:06,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 16:45:06,309 INFO L138 BoogieDeclarations]: Found implementation of procedure assign [2020-08-22 16:45:06,309 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 16:45:06,309 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 16:45:06,309 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 16:45:06,310 INFO L130 BoogieDeclarations]: Found specification of procedure assign [2020-08-22 16:45:06,310 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 16:45:06,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 16:45:06,310 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 16:45:06,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 16:45:06,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 16:45:06,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 16:45:06,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 16:45:06,517 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 16:45:06,517 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-22 16:45:06,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:45:06 BoogieIcfgContainer [2020-08-22 16:45:06,521 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 16:45:06,522 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 16:45:06,523 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 16:45:06,536 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 16:45:06,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:45:05" (1/3) ... [2020-08-22 16:45:06,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f03131f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:45:06, skipping insertion in model container [2020-08-22 16:45:06,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:45:06" (2/3) ... [2020-08-22 16:45:06,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f03131f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:45:06, skipping insertion in model container [2020-08-22 16:45:06,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:45:06" (3/3) ... [2020-08-22 16:45:06,540 INFO L109 eAbstractionObserver]: Analyzing ICFG test15.c [2020-08-22 16:45:06,552 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 16:45:06,560 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 16:45:06,575 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 16:45:06,601 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 16:45:06,602 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 16:45:06,602 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 16:45:06,602 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 16:45:06,602 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 16:45:06,602 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 16:45:06,603 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 16:45:06,603 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 16:45:06,619 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-08-22 16:45:06,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-22 16:45:06,625 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:45:06,626 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:45:06,627 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:45:06,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:45:06,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1573149608, now seen corresponding path program 1 times [2020-08-22 16:45:06,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:45:06,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734427243] [2020-08-22 16:45:06,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:45:06,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:45:06,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:45:06,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:45:06,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:45:06,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:45:06,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:45:06,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734427243] [2020-08-22 16:45:06,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:45:06,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 16:45:06,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521445885] [2020-08-22 16:45:06,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 16:45:06,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:45:07,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 16:45:07,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-08-22 16:45:07,005 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 8 states. [2020-08-22 16:45:07,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:45:07,269 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2020-08-22 16:45:07,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 16:45:07,271 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-08-22 16:45:07,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:45:07,279 INFO L225 Difference]: With dead ends: 22 [2020-08-22 16:45:07,279 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 16:45:07,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-08-22 16:45:07,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 16:45:07,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 16:45:07,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 16:45:07,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 16:45:07,314 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-08-22 16:45:07,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:45:07,315 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 16:45:07,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 16:45:07,315 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 16:45:07,315 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 16:45:07,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 16:45:07,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 16:45:07,390 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-22 16:45:07,391 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(#NULL.base)| |#NULL.base|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-08-22 16:45:07,391 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-22 16:45:07,391 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-22 16:45:07,391 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 16:45:07,391 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 16:45:07,392 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-22 16:45:07,392 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2020-08-22 16:45:07,392 INFO L264 CegarLoopResult]: At program point L14(lines 9 21) the Hoare annotation is: false [2020-08-22 16:45:07,392 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 9 21) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2020-08-22 16:45:07,393 INFO L268 CegarLoopResult]: For program point L13(lines 13 15) no Hoare annotation was computed. [2020-08-22 16:45:07,393 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 9 21) no Hoare annotation was computed. [2020-08-22 16:45:07,393 INFO L264 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: (not (= |main_~#b~0.base| |main_~#a~0.base|)) [2020-08-22 16:45:07,393 INFO L268 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-08-22 16:45:07,393 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 9 21) no Hoare annotation was computed. [2020-08-22 16:45:07,394 INFO L268 CegarLoopResult]: For program point assignEXIT(lines 5 7) no Hoare annotation was computed. [2020-08-22 16:45:07,394 INFO L264 CegarLoopResult]: At program point assignENTRY(lines 5 7) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-08-22 16:45:07,394 INFO L268 CegarLoopResult]: For program point assignFINAL(lines 5 7) no Hoare annotation was computed. [2020-08-22 16:45:07,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:45:07 BoogieIcfgContainer [2020-08-22 16:45:07,407 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 16:45:07,411 INFO L168 Benchmark]: Toolchain (without parser) took 1560.98 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 101.5 MB in the beginning and 115.9 MB in the end (delta: -14.4 MB). Peak memory consumption was 49.1 MB. Max. memory is 7.1 GB. [2020-08-22 16:45:07,412 INFO L168 Benchmark]: CDTParser took 0.68 ms. Allocated memory is still 140.0 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 16:45:07,413 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.39 ms. Allocated memory is still 140.0 MB. Free memory was 101.3 MB in the beginning and 91.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-08-22 16:45:07,414 INFO L168 Benchmark]: Boogie Preprocessor took 129.82 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 91.7 MB in the beginning and 182.0 MB in the end (delta: -90.3 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-08-22 16:45:07,415 INFO L168 Benchmark]: RCFGBuilder took 285.41 ms. Allocated memory is still 203.4 MB. Free memory was 181.6 MB in the beginning and 167.9 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2020-08-22 16:45:07,416 INFO L168 Benchmark]: TraceAbstraction took 884.46 ms. Allocated memory is still 203.4 MB. Free memory was 167.9 MB in the beginning and 115.9 MB in the end (delta: 52.0 MB). Peak memory consumption was 52.0 MB. Max. memory is 7.1 GB. [2020-08-22 16:45:07,421 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.68 ms. Allocated memory is still 140.0 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 255.39 ms. Allocated memory is still 140.0 MB. Free memory was 101.3 MB in the beginning and 91.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 129.82 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 91.7 MB in the beginning and 182.0 MB in the end (delta: -90.3 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 285.41 ms. Allocated memory is still 203.4 MB. Free memory was 181.6 MB in the beginning and 167.9 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 884.46 ms. Allocated memory is still 203.4 MB. Free memory was 167.9 MB in the beginning and 115.9 MB in the end (delta: 52.0 MB). Peak memory consumption was 52.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: 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: 9]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 9 SDtfs, 4 SDslu, 31 SDs, 0 SdLazy, 47 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 27 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 19 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 792 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...