/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 06:10:47,870 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 06:10:47,873 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 06:10:47,896 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 06:10:47,897 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 06:10:47,899 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 06:10:47,901 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 06:10:47,912 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 06:10:47,916 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 06:10:47,921 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 06:10:47,922 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 06:10:47,924 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 06:10:47,925 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 06:10:47,927 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 06:10:47,930 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 06:10:47,931 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 06:10:47,933 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 06:10:47,934 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 06:10:47,936 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 06:10:47,941 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 06:10:47,948 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 06:10:47,953 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 06:10:47,954 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 06:10:47,955 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 06:10:47,958 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 06:10:47,958 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 06:10:47,959 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 06:10:47,962 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 06:10:47,963 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 06:10:47,965 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 06:10:47,965 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 06:10:47,966 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 06:10:47,967 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 06:10:47,968 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 06:10:47,969 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 06:10:47,970 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 06:10:47,970 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 06:10:47,971 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 06:10:47,971 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 06:10:47,972 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 06:10:47,973 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 06:10:47,974 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 06:10:48,014 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 06:10:48,014 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 06:10:48,016 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 06:10:48,021 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 06:10:48,021 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 06:10:48,021 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 06:10:48,021 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 06:10:48,021 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 06:10:48,021 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 06:10:48,022 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 06:10:48,022 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 06:10:48,022 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 06:10:48,022 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 06:10:48,022 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 06:10:48,022 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 06:10:48,023 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 06:10:48,023 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 06:10:48,023 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 06:10:48,023 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 06:10:48,024 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 06:10:48,024 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 06:10:48,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 06:10:48,028 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 06:10:48,028 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 06:10:48,029 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 06:10:48,030 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 06:10:48,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 06:10:48,030 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 06:10:48,030 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 06:10:48,030 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 06:10:48,405 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 06:10:48,421 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 06:10:48,426 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 06:10:48,428 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 06:10:48,429 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 06:10:48,430 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2020-07-20 06:10:48,514 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99780fcdd/d2fb9030398f4bed8b2d364df856f961/FLAGd224cad6a [2020-07-20 06:10:49,106 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 06:10:49,107 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2020-07-20 06:10:49,119 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99780fcdd/d2fb9030398f4bed8b2d364df856f961/FLAGd224cad6a [2020-07-20 06:10:49,363 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99780fcdd/d2fb9030398f4bed8b2d364df856f961 [2020-07-20 06:10:49,373 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 06:10:49,376 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 06:10:49,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 06:10:49,378 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 06:10:49,383 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 06:10:49,384 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:10:49" (1/1) ... [2020-07-20 06:10:49,388 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b69f751 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:10:49, skipping insertion in model container [2020-07-20 06:10:49,388 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:10:49" (1/1) ... [2020-07-20 06:10:49,398 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 06:10:49,423 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 06:10:49,673 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 06:10:49,682 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 06:10:49,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 06:10:49,735 INFO L208 MainTranslator]: Completed translation [2020-07-20 06:10:49,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:10:49 WrapperNode [2020-07-20 06:10:49,736 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 06:10:49,737 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 06:10:49,738 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 06:10:49,738 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 06:10:49,752 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:10:49" (1/1) ... [2020-07-20 06:10:49,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:10:49" (1/1) ... [2020-07-20 06:10:49,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:10:49" (1/1) ... [2020-07-20 06:10:49,760 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:10:49" (1/1) ... [2020-07-20 06:10:49,766 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:10:49" (1/1) ... [2020-07-20 06:10:49,769 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:10:49" (1/1) ... [2020-07-20 06:10:49,770 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:10:49" (1/1) ... [2020-07-20 06:10:49,772 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 06:10:49,773 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 06:10:49,773 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 06:10:49,773 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 06:10:49,774 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:10:49" (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 06:10:49,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 06:10:49,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 06:10:49,970 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 06:10:49,970 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 06:10:49,970 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 06:10:49,970 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 06:10:49,970 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 06:10:49,971 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 06:10:49,971 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 06:10:49,971 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 06:10:49,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 06:10:49,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 06:10:50,210 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 06:10:50,210 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 06:10:50,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:10:50 BoogieIcfgContainer [2020-07-20 06:10:50,215 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 06:10:50,217 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 06:10:50,217 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 06:10:50,222 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 06:10:50,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 06:10:49" (1/3) ... [2020-07-20 06:10:50,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d900403 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:10:50, skipping insertion in model container [2020-07-20 06:10:50,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:10:49" (2/3) ... [2020-07-20 06:10:50,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d900403 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:10:50, skipping insertion in model container [2020-07-20 06:10:50,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:10:50" (3/3) ... [2020-07-20 06:10:50,227 INFO L109 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.v+lhb-reducer.c [2020-07-20 06:10:50,243 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 06:10:50,254 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 06:10:50,276 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 06:10:50,318 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 06:10:50,319 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 06:10:50,319 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 06:10:50,320 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 06:10:50,320 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 06:10:50,320 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 06:10:50,321 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 06:10:50,321 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 06:10:50,353 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-07-20 06:10:50,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-20 06:10:50,365 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:10:50,366 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:10:50,368 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:10:50,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:10:50,379 INFO L82 PathProgramCache]: Analyzing trace with hash 489049782, now seen corresponding path program 1 times [2020-07-20 06:10:50,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:10:50,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680549259] [2020-07-20 06:10:50,394 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7e1ce427 [2020-07-20 06:10:50,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:10:50,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:10:50,728 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 06:10:50,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680549259] [2020-07-20 06:10:50,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:10:50,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 06:10:50,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073105360] [2020-07-20 06:10:50,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 06:10:50,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:10:50,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 06:10:50,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 06:10:50,768 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 6 states. [2020-07-20 06:10:51,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:10:51,106 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2020-07-20 06:10:51,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 06:10:51,113 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-07-20 06:10:51,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:10:51,128 INFO L225 Difference]: With dead ends: 33 [2020-07-20 06:10:51,128 INFO L226 Difference]: Without dead ends: 16 [2020-07-20 06:10:51,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-07-20 06:10:51,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-07-20 06:10:51,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-07-20 06:10:51,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-07-20 06:10:51,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-07-20 06:10:51,193 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2020-07-20 06:10:51,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:10:51,193 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-07-20 06:10:51,194 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 06:10:51,194 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-07-20 06:10:51,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-20 06:10:51,195 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:10:51,195 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:10:51,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 06:10:51,196 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:10:51,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:10:51,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1823317113, now seen corresponding path program 1 times [2020-07-20 06:10:51,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:10:51,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88431542] [2020-07-20 06:10:51,198 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7e1ce427 [2020-07-20 06:10:51,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:10:51,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:10:51,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 06:10:51,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88431542] [2020-07-20 06:10:51,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165348185] [2020-07-20 06:10:51,329 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1ac314b3 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 06:10:51,408 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1ac314b3 issued 4 check-sat command(s) [2020-07-20 06:10:51,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 06:10:51,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-20 06:10:51,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 06:10:51,504 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 06:10:51,510 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 06:10:51,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 06:10:51,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 06:10:51,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2020-07-20 06:10:51,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461065808] [2020-07-20 06:10:51,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 06:10:51,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:10:51,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 06:10:51,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-07-20 06:10:51,543 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 8 states. [2020-07-20 06:10:51,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:10:51,642 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2020-07-20 06:10:51,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 06:10:51,642 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-07-20 06:10:51,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:10:51,644 INFO L225 Difference]: With dead ends: 21 [2020-07-20 06:10:51,644 INFO L226 Difference]: Without dead ends: 18 [2020-07-20 06:10:51,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-07-20 06:10:51,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-07-20 06:10:51,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-07-20 06:10:51,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-07-20 06:10:51,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-07-20 06:10:51,652 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2020-07-20 06:10:51,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:10:51,653 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-07-20 06:10:51,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 06:10:51,653 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-07-20 06:10:51,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-20 06:10:51,654 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:10:51,655 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:10:51,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-20 06:10:51,869 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:10:51,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:10:51,870 INFO L82 PathProgramCache]: Analyzing trace with hash -140999300, now seen corresponding path program 2 times [2020-07-20 06:10:51,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:10:51,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167031894] [2020-07-20 06:10:51,872 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7e1ce427 [2020-07-20 06:10:51,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:10:51,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:10:51,957 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-20 06:10:51,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167031894] [2020-07-20 06:10:51,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:10:51,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 06:10:51,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132832099] [2020-07-20 06:10:51,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 06:10:51,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:10:51,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 06:10:51,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 06:10:51,962 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 5 states. [2020-07-20 06:10:52,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:10:52,009 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-07-20 06:10:52,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 06:10:52,010 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-07-20 06:10:52,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:10:52,011 INFO L225 Difference]: With dead ends: 18 [2020-07-20 06:10:52,011 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 06:10:52,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 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 06:10:52,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 06:10:52,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 06:10:52,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 06:10:52,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 06:10:52,014 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-07-20 06:10:52,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:10:52,015 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 06:10:52,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 06:10:52,016 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 06:10:52,016 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 06:10:52,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-20 06:10:52,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 06:10:52,101 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 06:10:52,102 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__return_main~0 |old(~__return_main~0)|) (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= ~__return_65~0 |old(~__return_65~0)|)) [2020-07-20 06:10:52,102 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 06:10:52,103 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 06:10:52,103 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 06:10:52,103 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 06:10:52,103 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 06:10:52,103 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-07-20 06:10:52,104 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-07-20 06:10:52,104 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 6) no Hoare annotation was computed. [2020-07-20 06:10:52,104 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-07-20 06:10:52,104 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 55) no Hoare annotation was computed. [2020-07-20 06:10:52,104 INFO L268 CegarLoopResult]: For program point L30(lines 30 69) no Hoare annotation was computed. [2020-07-20 06:10:52,105 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 12 72) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0)) [2020-07-20 06:10:52,105 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 12 72) no Hoare annotation was computed. [2020-07-20 06:10:52,105 INFO L268 CegarLoopResult]: For program point L24(lines 24 70) no Hoare annotation was computed. [2020-07-20 06:10:52,105 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-07-20 06:10:52,105 INFO L268 CegarLoopResult]: For program point L53(lines 53 62) no Hoare annotation was computed. [2020-07-20 06:10:52,105 INFO L268 CegarLoopResult]: For program point L18(lines 18 71) no Hoare annotation was computed. [2020-07-20 06:10:52,106 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 12 72) no Hoare annotation was computed. [2020-07-20 06:10:52,106 INFO L264 CegarLoopResult]: At program point L44(lines 31 65) the Hoare annotation is: (<= (+ main_~main__x~0 2) main_~main__y~0) [2020-07-20 06:10:52,106 INFO L268 CegarLoopResult]: For program point L38(lines 38 64) no Hoare annotation was computed. [2020-07-20 06:10:52,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 06:10:52 BoogieIcfgContainer [2020-07-20 06:10:52,129 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 06:10:52,133 INFO L168 Benchmark]: Toolchain (without parser) took 2756.92 ms. Allocated memory was 143.1 MB in the beginning and 234.9 MB in the end (delta: 91.8 MB). Free memory was 103.1 MB in the beginning and 200.7 MB in the end (delta: -97.6 MB). Peak memory consumption was 81.7 MB. Max. memory is 7.1 GB. [2020-07-20 06:10:52,134 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 143.1 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 06:10:52,135 INFO L168 Benchmark]: CACSL2BoogieTranslator took 358.67 ms. Allocated memory is still 143.1 MB. Free memory was 102.9 MB in the beginning and 93.0 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-07-20 06:10:52,136 INFO L168 Benchmark]: Boogie Preprocessor took 34.93 ms. Allocated memory is still 143.1 MB. Free memory was 93.0 MB in the beginning and 91.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. [2020-07-20 06:10:52,137 INFO L168 Benchmark]: RCFGBuilder took 442.34 ms. Allocated memory was 143.1 MB in the beginning and 202.9 MB in the end (delta: 59.8 MB). Free memory was 91.5 MB in the beginning and 168.8 MB in the end (delta: -77.3 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-07-20 06:10:52,139 INFO L168 Benchmark]: TraceAbstraction took 1912.59 ms. Allocated memory was 202.9 MB in the beginning and 234.9 MB in the end (delta: 32.0 MB). Free memory was 168.8 MB in the beginning and 200.7 MB in the end (delta: -31.9 MB). Peak memory consumption was 87.6 MB. Max. memory is 7.1 GB. [2020-07-20 06:10:52,143 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 143.1 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 358.67 ms. Allocated memory is still 143.1 MB. Free memory was 102.9 MB in the beginning and 93.0 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 34.93 ms. Allocated memory is still 143.1 MB. Free memory was 93.0 MB in the beginning and 91.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 442.34 ms. Allocated memory was 143.1 MB in the beginning and 202.9 MB in the end (delta: 59.8 MB). Free memory was 91.5 MB in the beginning and 168.8 MB in the end (delta: -77.3 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1912.59 ms. Allocated memory was 202.9 MB in the beginning and 234.9 MB in the end (delta: 32.0 MB). Free memory was 168.8 MB in the beginning and 200.7 MB in the end (delta: -31.9 MB). Peak memory consumption was 87.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 55]: 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: 31]: Loop Invariant Derived loop invariant: main__x + 2 <= main__y - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.7s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 40 SDtfs, 24 SDslu, 98 SDs, 0 SdLazy, 99 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 7 NumberOfFragments, 24 HoareAnnotationTreeSize, 5 FomulaSimplifications, 25 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 3 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 2588 SizeOfPredicates, 4 NumberOfNonLiveVariables, 70 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 6/10 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...