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 --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/loop-lit/jm2006.c.i.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:05:39,482 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:05:39,485 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:05:39,499 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:05:39,499 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:05:39,500 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:05:39,504 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:05:39,508 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:05:39,509 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:05:39,510 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:05:39,516 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:05:39,518 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:05:39,521 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:05:39,522 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:05:39,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:05:39,528 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:05:39,528 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:05:39,529 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:05:39,533 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:05:39,535 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:05:39,541 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:05:39,542 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:05:39,545 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:05:39,548 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:05:39,550 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:05:39,552 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:05:39,553 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:05:39,553 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:05:39,554 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:05:39,555 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:05:39,555 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:05:39,557 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:05:39,558 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:05:39,558 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:05:39,562 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:05:39,562 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:05:39,563 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:05:39,563 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:05:39,564 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:05:39,565 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:05:39,566 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:05:39,569 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 [2019-10-15 01:05:39,590 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:05:39,590 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:05:39,592 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:05:39,592 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:05:39,592 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:05:39,593 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:05:39,593 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:05:39,593 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:05:39,593 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:05:39,593 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:05:39,594 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:05:39,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:05:39,595 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:05:39,595 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:05:39,595 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:05:39,596 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:05:39,596 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:05:39,596 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:05:39,597 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:05:39,597 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:05:39,597 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:05:39,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:05:39,598 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:05:39,598 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:05:39,598 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:05:39,598 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:05:39,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:05:39,598 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:05:39,599 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:05:39,888 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:05:39,913 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:05:39,917 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:05:39,918 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:05:39,919 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:05:39,919 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/jm2006.c.i.v+cfa-reducer.c [2019-10-15 01:05:40,000 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93baf1a36/2ae24f78c96743ad92313abb43978411/FLAGcef34060a [2019-10-15 01:05:40,454 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:05:40,456 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006.c.i.v+cfa-reducer.c [2019-10-15 01:05:40,463 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93baf1a36/2ae24f78c96743ad92313abb43978411/FLAGcef34060a [2019-10-15 01:05:40,848 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93baf1a36/2ae24f78c96743ad92313abb43978411 [2019-10-15 01:05:40,861 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:05:40,863 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:05:40,864 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:05:40,864 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:05:40,867 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:05:40,869 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:05:40" (1/1) ... [2019-10-15 01:05:40,872 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46029d64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:40, skipping insertion in model container [2019-10-15 01:05:40,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:05:40" (1/1) ... [2019-10-15 01:05:40,882 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:05:40,907 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:05:41,117 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:05:41,123 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:05:41,142 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:05:41,154 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:05:41,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:41 WrapperNode [2019-10-15 01:05:41,155 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:05:41,155 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:05:41,156 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:05:41,156 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:05:41,252 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:41" (1/1) ... [2019-10-15 01:05:41,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:41" (1/1) ... [2019-10-15 01:05:41,262 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:41" (1/1) ... [2019-10-15 01:05:41,262 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:41" (1/1) ... [2019-10-15 01:05:41,266 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:41" (1/1) ... [2019-10-15 01:05:41,269 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:41" (1/1) ... [2019-10-15 01:05:41,270 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:41" (1/1) ... [2019-10-15 01:05:41,271 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:05:41,272 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:05:41,272 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:05:41,272 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:05:41,273 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:41" (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 [2019-10-15 01:05:41,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:05:41,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:05:41,332 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:05:41,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:05:41,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-15 01:05:41,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-15 01:05:41,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:05:41,332 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:05:41,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:05:41,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:05:41,525 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:05:41,526 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-15 01:05:41,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:05:41 BoogieIcfgContainer [2019-10-15 01:05:41,527 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:05:41,528 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:05:41,528 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:05:41,531 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:05:41,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:05:40" (1/3) ... [2019-10-15 01:05:41,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@513d3041 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:05:41, skipping insertion in model container [2019-10-15 01:05:41,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:41" (2/3) ... [2019-10-15 01:05:41,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@513d3041 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:05:41, skipping insertion in model container [2019-10-15 01:05:41,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:05:41" (3/3) ... [2019-10-15 01:05:41,535 INFO L109 eAbstractionObserver]: Analyzing ICFG jm2006.c.i.v+cfa-reducer.c [2019-10-15 01:05:41,546 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:05:41,557 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:05:41,569 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:05:41,600 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:05:41,600 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:05:41,600 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:05:41,601 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:05:41,601 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:05:41,601 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:05:41,601 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:05:41,601 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:05:41,627 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2019-10-15 01:05:41,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-15 01:05:41,635 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:05:41,636 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:05:41,638 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:05:41,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:05:41,645 INFO L82 PathProgramCache]: Analyzing trace with hash -696314067, now seen corresponding path program 1 times [2019-10-15 01:05:41,656 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:05:41,656 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282278852] [2019-10-15 01:05:41,657 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:05:41,657 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:05:41,657 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:05:41,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:05:41,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:05:41,935 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282278852] [2019-10-15 01:05:41,936 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:05:41,936 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:05:41,937 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947778921] [2019-10-15 01:05:41,941 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:05:41,943 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:05:41,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:05:41,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:05:41,956 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 6 states. [2019-10-15 01:05:42,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:05:42,166 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2019-10-15 01:05:42,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:05:42,168 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-10-15 01:05:42,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:05:42,178 INFO L225 Difference]: With dead ends: 32 [2019-10-15 01:05:42,179 INFO L226 Difference]: Without dead ends: 14 [2019-10-15 01:05:42,182 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:05:42,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-10-15 01:05:42,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-10-15 01:05:42,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-10-15 01:05:42,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2019-10-15 01:05:42,223 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2019-10-15 01:05:42,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:05:42,223 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2019-10-15 01:05:42,224 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:05:42,224 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2019-10-15 01:05:42,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-15 01:05:42,225 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:05:42,225 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:05:42,225 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:05:42,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:05:42,226 INFO L82 PathProgramCache]: Analyzing trace with hash -112838900, now seen corresponding path program 1 times [2019-10-15 01:05:42,226 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:05:42,227 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003954237] [2019-10-15 01:05:42,227 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:05:42,227 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:05:42,227 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:05:42,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:05:42,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:05:42,383 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003954237] [2019-10-15 01:05:42,383 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093264628] [2019-10-15 01:05:42,383 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -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 [2019-10-15 01:05:42,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:05:42,424 INFO L256 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 18 conjunts are in the unsatisfiable core [2019-10-15 01:05:42,430 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:05:42,528 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:05:42,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:05:42,563 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:05:42,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:05:42,658 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [497069045] [2019-10-15 01:05:42,665 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 14 [2019-10-15 01:05:42,703 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-15 01:05:42,703 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-15 01:05:42,877 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-10-15 01:05:42,883 INFO L272 AbstractInterpreter]: Visited 13 different actions 33 times. Merged at 5 different actions 20 times. Widened at 1 different actions 2 times. Performed 134 root evaluator evaluations with a maximum evaluation depth of 4. Performed 134 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Found 1 fixpoints after 1 different actions. Largest state had 14 variables. [2019-10-15 01:05:42,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:05:42,890 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 01:05:42,891 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-15 01:05:42,891 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2019-10-15 01:05:42,891 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120737458] [2019-10-15 01:05:42,892 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 01:05:42,893 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:05:42,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 01:05:42,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:05:42,893 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 12 states. [2019-10-15 01:05:43,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:05:43,214 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2019-10-15 01:05:43,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:05:43,214 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 13 [2019-10-15 01:05:43,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:05:43,215 INFO L225 Difference]: With dead ends: 24 [2019-10-15 01:05:43,216 INFO L226 Difference]: Without dead ends: 17 [2019-10-15 01:05:43,217 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2019-10-15 01:05:43,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-10-15 01:05:43,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-10-15 01:05:43,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-10-15 01:05:43,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2019-10-15 01:05:43,222 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 13 [2019-10-15 01:05:43,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:05:43,223 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2019-10-15 01:05:43,223 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 01:05:43,223 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2019-10-15 01:05:43,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-15 01:05:43,224 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:05:43,224 INFO L380 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:05:43,425 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:05:43,426 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:05:43,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:05:43,426 INFO L82 PathProgramCache]: Analyzing trace with hash -550005011, now seen corresponding path program 2 times [2019-10-15 01:05:43,427 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:05:43,427 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480794495] [2019-10-15 01:05:43,427 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:05:43,427 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:05:43,428 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:05:43,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:05:43,657 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 01:05:43,658 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480794495] [2019-10-15 01:05:43,660 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978693518] [2019-10-15 01:05:43,661 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:05:43,712 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-10-15 01:05:43,712 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:05:43,714 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 31 conjunts are in the unsatisfiable core [2019-10-15 01:05:43,718 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:05:43,832 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:05:43,852 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:05:43,853 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:05:43,997 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:05:43,998 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1950491750] [2019-10-15 01:05:43,998 INFO L195 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-10-15 01:05:43,998 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-10-15 01:05:43,999 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-15 01:05:43,999 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 19 [2019-10-15 01:05:43,999 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466805948] [2019-10-15 01:05:44,000 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-10-15 01:05:44,000 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:05:44,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-10-15 01:05:44,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2019-10-15 01:05:44,001 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 19 states. [2019-10-15 01:05:44,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:05:44,209 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2019-10-15 01:05:44,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:05:44,209 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 16 [2019-10-15 01:05:44,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:05:44,210 INFO L225 Difference]: With dead ends: 20 [2019-10-15 01:05:44,210 INFO L226 Difference]: Without dead ends: 0 [2019-10-15 01:05:44,213 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=141, Invalid=365, Unknown=0, NotChecked=0, Total=506 [2019-10-15 01:05:44,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-15 01:05:44,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-15 01:05:44,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-15 01:05:44,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-15 01:05:44,214 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2019-10-15 01:05:44,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:05:44,214 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-15 01:05:44,214 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-10-15 01:05:44,215 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-15 01:05:44,215 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-15 01:05:44,416 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:05:44,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-15 01:05:44,539 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-15 01:05:44,539 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-15 01:05:44,539 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-15 01:05:44,539 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-15 01:05:44,540 INFO L439 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (and (<= 0 ~__return_72~0) (<= ~__return_72~0 0)) [2019-10-15 01:05:44,540 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-15 01:05:44,540 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-15 01:05:44,540 INFO L439 ceAbstractionStarter]: At program point mainENTRY(lines 8 65) the Hoare annotation is: (or (not (<= |old(~__return_72~0)| 0)) (not (<= 0 |old(~__return_72~0)|)) (and (<= 0 ~__return_72~0) (<= ~__return_72~0 0))) [2019-10-15 01:05:44,540 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 8 65) no Hoare annotation was computed. [2019-10-15 01:05:44,541 INFO L443 ceAbstractionStarter]: For program point L20(lines 20 63) no Hoare annotation was computed. [2019-10-15 01:05:44,541 INFO L443 ceAbstractionStarter]: For program point L48(line 48) no Hoare annotation was computed. [2019-10-15 01:05:44,541 INFO L443 ceAbstractionStarter]: For program point L14(lines 14 64) no Hoare annotation was computed. [2019-10-15 01:05:44,541 INFO L443 ceAbstractionStarter]: For program point L46(lines 46 55) no Hoare annotation was computed. [2019-10-15 01:05:44,543 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 8 65) no Hoare annotation was computed. [2019-10-15 01:05:44,543 INFO L443 ceAbstractionStarter]: For program point L39(lines 39 61) no Hoare annotation was computed. [2019-10-15 01:05:44,543 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 48) no Hoare annotation was computed. [2019-10-15 01:05:44,544 INFO L439 ceAbstractionStarter]: At program point L35(lines 25 63) the Hoare annotation is: (or (not (<= |old(~__return_72~0)| 0)) (not (<= 0 |old(~__return_72~0)|)) (let ((.cse1 (+ main_~main__i~0 main_~main__y~0)) (.cse0 (+ main_~main__j~0 main_~main__x~0))) (and (<= .cse0 .cse1) (<= 0 ~__return_72~0) (<= .cse1 .cse0) (<= ~__return_72~0 0)))) [2019-10-15 01:05:44,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 01:05:44 BoogieIcfgContainer [2019-10-15 01:05:44,582 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-15 01:05:44,587 INFO L168 Benchmark]: Toolchain (without parser) took 3720.96 ms. Allocated memory was 146.8 MB in the beginning and 242.2 MB in the end (delta: 95.4 MB). Free memory was 104.8 MB in the beginning and 189.7 MB in the end (delta: -84.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2019-10-15 01:05:44,589 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 146.8 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-10-15 01:05:44,591 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.37 ms. Allocated memory is still 146.8 MB. Free memory was 104.6 MB in the beginning and 95.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2019-10-15 01:05:44,592 INFO L168 Benchmark]: Boogie Preprocessor took 116.16 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 95.1 MB in the beginning and 181.6 MB in the end (delta: -86.6 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2019-10-15 01:05:44,597 INFO L168 Benchmark]: RCFGBuilder took 255.27 ms. Allocated memory is still 202.9 MB. Free memory was 181.2 MB in the beginning and 169.2 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. [2019-10-15 01:05:44,598 INFO L168 Benchmark]: TraceAbstraction took 3053.50 ms. Allocated memory was 202.9 MB in the beginning and 242.2 MB in the end (delta: 39.3 MB). Free memory was 169.2 MB in the beginning and 189.7 MB in the end (delta: -20.6 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. [2019-10-15 01:05:44,608 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 146.8 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 291.37 ms. Allocated memory is still 146.8 MB. Free memory was 104.6 MB in the beginning and 95.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 116.16 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 95.1 MB in the beginning and 181.6 MB in the end (delta: -86.6 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 255.27 ms. Allocated memory is still 202.9 MB. Free memory was 181.2 MB in the beginning and 169.2 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3053.50 ms. Allocated memory was 202.9 MB in the beginning and 242.2 MB in the end (delta: 39.3 MB). Free memory was 169.2 MB in the beginning and 189.7 MB in the end (delta: -20.6 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 48]: 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: 25]: Loop Invariant Derived loop invariant: (!(\old(__return_72) <= 0) || !(0 <= \old(__return_72))) || (((main__j + main__x <= main__i + main__y && 0 <= __return_72) && main__i + main__y <= main__j + main__x) && __return_72 <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 17 locations, 1 error locations. Result: SAFE, OverallTime: 2.9s, OverallIterations: 3, TraceHistogramMax: 4, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 37 SDtfs, 66 SDslu, 121 SDs, 0 SdLazy, 142 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 44 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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, 10 NumberOfFragments, 55 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 174 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 70 NumberOfCodeBlocks, 70 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 6922 SizeOfPredicates, 16 NumberOfNonLiveVariables, 139 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 3/33 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...