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/array-programs/copysome2-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:53:47,425 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:53:47,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:53:47,441 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:53:47,441 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:53:47,443 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:53:47,445 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:53:47,455 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:53:47,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:53:47,460 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:53:47,462 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:53:47,463 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:53:47,463 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:53:47,466 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:53:47,466 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:53:47,468 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:53:47,469 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:53:47,470 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:53:47,474 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:53:47,476 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:53:47,479 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:53:47,481 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:53:47,482 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:53:47,483 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:53:47,488 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 19:53:47,501 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:53:47,502 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:53:47,505 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:53:47,506 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 19:53:47,525 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:53:47,526 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:53:47,528 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:53:47,528 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:53:47,529 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:53:47,529 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:53:47,529 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:53:47,529 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:53:47,529 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:53:47,530 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:53:47,531 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:53:47,531 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:53:47,531 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:53:47,532 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:53:47,532 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:53:47,532 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:53:47,532 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:53:47,532 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:53:47,533 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:53:47,533 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:53:47,533 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:53:47,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:53:47,533 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:53:47,534 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:53:47,534 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:53:47,534 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:53:47,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:53:47,534 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:53:47,535 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 [2019-10-13 19:53:47,855 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:53:47,868 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:53:47,871 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:53:47,873 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:53:47,873 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:53:47,874 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-programs/copysome2-1.i [2019-10-13 19:53:47,951 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c82cc04fd/7bab049e75a74824b5b2f3460f1729db/FLAG15eb0f546 [2019-10-13 19:53:48,398 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:53:48,399 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-programs/copysome2-1.i [2019-10-13 19:53:48,405 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c82cc04fd/7bab049e75a74824b5b2f3460f1729db/FLAG15eb0f546 [2019-10-13 19:53:48,822 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c82cc04fd/7bab049e75a74824b5b2f3460f1729db [2019-10-13 19:53:48,835 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:53:48,837 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:53:48,838 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:53:48,839 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:53:48,842 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:53:48,843 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:53:48" (1/1) ... [2019-10-13 19:53:48,847 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4432024b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:48, skipping insertion in model container [2019-10-13 19:53:48,848 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:53:48" (1/1) ... [2019-10-13 19:53:48,856 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:53:48,878 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:53:49,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:53:49,077 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:53:49,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:53:49,126 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:53:49,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:49 WrapperNode [2019-10-13 19:53:49,127 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:53:49,128 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:53:49,128 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:53:49,128 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:53:49,227 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:49" (1/1) ... [2019-10-13 19:53:49,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:49" (1/1) ... [2019-10-13 19:53:49,235 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:49" (1/1) ... [2019-10-13 19:53:49,235 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:49" (1/1) ... [2019-10-13 19:53:49,243 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:49" (1/1) ... [2019-10-13 19:53:49,249 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:49" (1/1) ... [2019-10-13 19:53:49,250 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:49" (1/1) ... [2019-10-13 19:53:49,255 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:53:49,258 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:53:49,259 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:53:49,259 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:53:49,260 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:49" (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 [2019-10-13 19:53:49,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:53:49,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:53:49,316 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 19:53:49,317 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:53:49,317 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:53:49,317 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 19:53:49,317 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:53:49,317 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:53:49,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:53:49,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:53:49,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:53:49,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:53:49,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:53:49,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:53:49,668 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:53:49,669 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 19:53:49,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:53:49 BoogieIcfgContainer [2019-10-13 19:53:49,670 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:53:49,672 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:53:49,672 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:53:49,675 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:53:49,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:53:48" (1/3) ... [2019-10-13 19:53:49,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29471c3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:53:49, skipping insertion in model container [2019-10-13 19:53:49,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:49" (2/3) ... [2019-10-13 19:53:49,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29471c3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:53:49, skipping insertion in model container [2019-10-13 19:53:49,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:53:49" (3/3) ... [2019-10-13 19:53:49,678 INFO L109 eAbstractionObserver]: Analyzing ICFG copysome2-1.i [2019-10-13 19:53:49,691 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:53:49,699 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:53:49,710 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:53:49,732 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:53:49,733 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:53:49,733 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:53:49,733 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:53:49,733 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:53:49,733 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:53:49,734 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:53:49,734 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:53:49,747 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-10-13 19:53:49,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-13 19:53:49,752 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:49,753 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:53:49,755 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:49,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:49,761 INFO L82 PathProgramCache]: Analyzing trace with hash 696803616, now seen corresponding path program 1 times [2019-10-13 19:53:49,768 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:49,768 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934220987] [2019-10-13 19:53:49,769 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:49,769 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:49,769 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:49,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:49,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:53:49,890 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934220987] [2019-10-13 19:53:49,891 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:53:49,891 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 19:53:49,892 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302839693] [2019-10-13 19:53:49,895 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 19:53:49,897 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:49,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 19:53:49,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 19:53:49,915 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-10-13 19:53:49,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:49,937 INFO L93 Difference]: Finished difference Result 56 states and 75 transitions. [2019-10-13 19:53:49,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 19:53:49,939 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2019-10-13 19:53:49,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:49,948 INFO L225 Difference]: With dead ends: 56 [2019-10-13 19:53:49,948 INFO L226 Difference]: Without dead ends: 27 [2019-10-13 19:53:49,952 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 19:53:49,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-10-13 19:53:49,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-10-13 19:53:49,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-10-13 19:53:49,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2019-10-13 19:53:49,994 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 17 [2019-10-13 19:53:49,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:49,995 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2019-10-13 19:53:49,995 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 19:53:49,995 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2019-10-13 19:53:49,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-13 19:53:49,996 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:49,997 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:53:49,997 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:49,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:49,998 INFO L82 PathProgramCache]: Analyzing trace with hash 123133892, now seen corresponding path program 1 times [2019-10-13 19:53:49,998 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:49,998 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006730539] [2019-10-13 19:53:49,998 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:49,999 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:49,999 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:50,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:50,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:53:50,058 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006730539] [2019-10-13 19:53:50,059 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:53:50,059 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 19:53:50,059 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427368345] [2019-10-13 19:53:50,061 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:53:50,062 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:50,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:53:50,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:53:50,063 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand 3 states. [2019-10-13 19:53:50,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:50,146 INFO L93 Difference]: Finished difference Result 54 states and 68 transitions. [2019-10-13 19:53:50,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:53:50,146 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-10-13 19:53:50,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:50,148 INFO L225 Difference]: With dead ends: 54 [2019-10-13 19:53:50,148 INFO L226 Difference]: Without dead ends: 35 [2019-10-13 19:53:50,149 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:53:50,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-10-13 19:53:50,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2019-10-13 19:53:50,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-10-13 19:53:50,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2019-10-13 19:53:50,158 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 17 [2019-10-13 19:53:50,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:50,158 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2019-10-13 19:53:50,158 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:53:50,158 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2019-10-13 19:53:50,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-13 19:53:50,160 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:50,160 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:53:50,160 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:50,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:50,161 INFO L82 PathProgramCache]: Analyzing trace with hash -204061721, now seen corresponding path program 1 times [2019-10-13 19:53:50,161 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:50,161 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145040321] [2019-10-13 19:53:50,162 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:50,162 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:50,162 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:50,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:50,276 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 19:53:50,276 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145040321] [2019-10-13 19:53:50,277 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791545554] [2019-10-13 19:53:50,277 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 [2019-10-13 19:53:50,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:50,334 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:53:50,341 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:53:50,383 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 19:53:50,383 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 19:53:50,425 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 19:53:50,426 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [239030263] [2019-10-13 19:53:50,432 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 26 [2019-10-13 19:53:50,469 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-13 19:53:50,469 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-13 19:53:50,549 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-13 19:53:50,551 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 15 root evaluator evaluations with a maximum evaluation depth of 0. Performed 15 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 30 variables. [2019-10-13 19:53:50,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:50,555 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-13 19:53:50,597 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-13 19:53:50,598 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-13 19:53:50,601 INFO L553 sIntCurrentIteration]: We unified 24 AI predicates to 24 [2019-10-13 19:53:50,602 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-13 19:53:50,602 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-13 19:53:50,603 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 4, 4] total 9 [2019-10-13 19:53:50,603 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142929924] [2019-10-13 19:53:50,604 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 19:53:50,607 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:50,607 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-13 19:53:50,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 19:53:50,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 19:53:50,608 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 2 states. [2019-10-13 19:53:50,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:50,611 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2019-10-13 19:53:50,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 19:53:50,612 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2019-10-13 19:53:50,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:50,612 INFO L225 Difference]: With dead ends: 30 [2019-10-13 19:53:50,612 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 19:53:50,613 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 19:53:50,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 19:53:50,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 19:53:50,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 19:53:50,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 19:53:50,614 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2019-10-13 19:53:50,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:50,615 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 19:53:50,615 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 19:53:50,615 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 19:53:50,615 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 19:53:50,820 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:53:50,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 19:53:50,877 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-13 19:53:50,878 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-13 19:53:50,878 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:53:50,878 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:53:50,879 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-13 19:53:50,879 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-13 19:53:50,879 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-13 19:53:50,879 INFO L443 ceAbstractionStarter]: For program point L27-2(lines 27 29) no Hoare annotation was computed. [2019-10-13 19:53:50,879 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 4 31) no Hoare annotation was computed. [2019-10-13 19:53:50,879 INFO L439 ceAbstractionStarter]: At program point L27-3(lines 27 29) the Hoare annotation is: false [2019-10-13 19:53:50,880 INFO L443 ceAbstractionStarter]: For program point L27-4(lines 27 29) no Hoare annotation was computed. [2019-10-13 19:53:50,880 INFO L443 ceAbstractionStarter]: For program point L11-2(lines 11 15) no Hoare annotation was computed. [2019-10-13 19:53:50,880 INFO L439 ceAbstractionStarter]: At program point L11-3(lines 11 15) the Hoare annotation is: false [2019-10-13 19:53:50,880 INFO L443 ceAbstractionStarter]: For program point L11-4(lines 11 15) no Hoare annotation was computed. [2019-10-13 19:53:50,880 INFO L439 ceAbstractionStarter]: At program point L28(line 28) the Hoare annotation is: false [2019-10-13 19:53:50,881 INFO L443 ceAbstractionStarter]: For program point L28-1(line 28) no Hoare annotation was computed. [2019-10-13 19:53:50,881 INFO L443 ceAbstractionStarter]: For program point L20-2(lines 20 25) no Hoare annotation was computed. [2019-10-13 19:53:50,881 INFO L439 ceAbstractionStarter]: At program point L20-3(lines 20 25) the Hoare annotation is: false [2019-10-13 19:53:50,881 INFO L443 ceAbstractionStarter]: For program point L20-4(lines 20 25) no Hoare annotation was computed. [2019-10-13 19:53:50,881 INFO L443 ceAbstractionStarter]: For program point L16-2(lines 16 19) no Hoare annotation was computed. [2019-10-13 19:53:50,882 INFO L439 ceAbstractionStarter]: At program point L16-3(lines 16 19) the Hoare annotation is: false [2019-10-13 19:53:50,882 INFO L443 ceAbstractionStarter]: For program point L16-4(lines 16 19) no Hoare annotation was computed. [2019-10-13 19:53:50,882 INFO L443 ceAbstractionStarter]: For program point L21(lines 21 24) no Hoare annotation was computed. [2019-10-13 19:53:50,882 INFO L443 ceAbstractionStarter]: For program point L17(lines 17 18) no Hoare annotation was computed. [2019-10-13 19:53:50,882 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 4 31) no Hoare annotation was computed. [2019-10-13 19:53:50,882 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 4 31) the Hoare annotation is: true [2019-10-13 19:53:50,883 INFO L443 ceAbstractionStarter]: For program point L2-1(line 2) no Hoare annotation was computed. [2019-10-13 19:53:50,883 INFO L443 ceAbstractionStarter]: For program point L2-3(line 2) no Hoare annotation was computed. [2019-10-13 19:53:50,883 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2019-10-13 19:53:50,883 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2019-10-13 19:53:50,883 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2019-10-13 19:53:50,884 INFO L443 ceAbstractionStarter]: For program point L2(line 2) no Hoare annotation was computed. [2019-10-13 19:53:50,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:53:50 BoogieIcfgContainer [2019-10-13 19:53:50,893 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 19:53:50,896 INFO L168 Benchmark]: Toolchain (without parser) took 2058.12 ms. Allocated memory was 136.8 MB in the beginning and 199.2 MB in the end (delta: 62.4 MB). Free memory was 101.4 MB in the beginning and 93.1 MB in the end (delta: 8.3 MB). Peak memory consumption was 70.7 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:50,897 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 136.8 MB. Free memory was 120.1 MB in the beginning and 119.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-13 19:53:50,897 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.31 ms. Allocated memory is still 136.8 MB. Free memory was 101.2 MB in the beginning and 90.9 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:50,899 INFO L168 Benchmark]: Boogie Preprocessor took 126.85 ms. Allocated memory was 136.8 MB in the beginning and 199.2 MB in the end (delta: 62.4 MB). Free memory was 90.9 MB in the beginning and 176.8 MB in the end (delta: -85.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:50,899 INFO L168 Benchmark]: RCFGBuilder took 412.19 ms. Allocated memory is still 199.2 MB. Free memory was 176.8 MB in the beginning and 159.7 MB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:50,900 INFO L168 Benchmark]: TraceAbstraction took 1221.33 ms. Allocated memory is still 199.2 MB. Free memory was 159.7 MB in the beginning and 93.1 MB in the end (delta: 66.6 MB). Peak memory consumption was 66.6 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:50,904 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 136.8 MB. Free memory was 120.1 MB in the beginning and 119.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 289.31 ms. Allocated memory is still 136.8 MB. Free memory was 101.2 MB in the beginning and 90.9 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 126.85 ms. Allocated memory was 136.8 MB in the beginning and 199.2 MB in the end (delta: 62.4 MB). Free memory was 90.9 MB in the beginning and 176.8 MB in the end (delta: -85.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 412.19 ms. Allocated memory is still 199.2 MB. Free memory was 176.8 MB in the beginning and 159.7 MB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1221.33 ms. Allocated memory is still 199.2 MB. Free memory was 159.7 MB in the beginning and 93.1 MB in the end (delta: 66.6 MB). Peak memory consumption was 66.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2]: 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: 20]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 32 locations, 1 error locations. Result: SAFE, OverallTime: 1.1s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 64 SDtfs, 7 SDslu, 16 SDs, 0 SdLazy, 23 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 12 PreInvPairs, 12 NumberOfFragments, 10 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 2944 SizeOfPredicates, 1 NumberOfNonLiveVariables, 94 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 6/9 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 124, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.9166666666666666, AVG_VARS_REMOVED_DURING_WEAKENING: 0.875, AVG_WEAKENED_CONJUNCTS: 0.25, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...