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-examples/standard_copy8_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:53:11,497 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:53:11,499 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:53:11,512 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:53:11,512 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:53:11,514 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:53:11,520 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:53:11,525 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:53:11,529 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:53:11,534 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:53:11,535 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:53:11,537 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:53:11,537 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:53:11,538 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:53:11,539 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:53:11,542 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:53:11,543 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:53:11,543 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:53:11,547 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:53:11,549 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:53:11,553 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:53:11,554 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:53:11,557 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:53:11,558 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:53:11,563 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 19:53:11,577 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:53:11,579 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:53:11,582 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:53:11,583 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 19:53:11,603 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:53:11,604 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:53:11,606 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:53:11,606 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:53:11,606 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:53:11,607 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:53:11,607 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:53:11,607 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:53:11,607 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:53:11,607 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:53:11,609 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:53:11,609 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:53:11,609 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:53:11,610 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:53:11,610 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:53:11,610 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:53:11,610 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:53:11,610 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:53:11,611 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:53:11,611 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:53:11,611 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:53:11,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:53:11,611 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:53:11,612 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:53:11,612 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:53:11,612 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:53:11,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:53:11,612 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:53:11,612 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 19:53:11,906 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:53:11,921 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:53:11,925 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:53:11,926 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:53:11,927 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:53:11,927 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copy8_ground-1.i [2019-10-13 19:53:11,991 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d105e7520/e9a23918f47b4b3c9017ed1e6b74c6b2/FLAG02d6905f1 [2019-10-13 19:53:12,434 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:53:12,435 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy8_ground-1.i [2019-10-13 19:53:12,447 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d105e7520/e9a23918f47b4b3c9017ed1e6b74c6b2/FLAG02d6905f1 [2019-10-13 19:53:12,835 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d105e7520/e9a23918f47b4b3c9017ed1e6b74c6b2 [2019-10-13 19:53:12,847 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:53:12,848 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:53:12,852 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:53:12,852 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:53:12,856 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:53:12,857 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:53:12" (1/1) ... [2019-10-13 19:53:12,860 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78bc90c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:12, skipping insertion in model container [2019-10-13 19:53:12,860 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:53:12" (1/1) ... [2019-10-13 19:53:12,869 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:53:12,888 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:53:13,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:53:13,106 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:53:13,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:53:13,155 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:53:13,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:13 WrapperNode [2019-10-13 19:53:13,155 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:53:13,156 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:53:13,156 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:53:13,156 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:53:13,255 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:13" (1/1) ... [2019-10-13 19:53:13,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:13" (1/1) ... [2019-10-13 19:53:13,264 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:13" (1/1) ... [2019-10-13 19:53:13,265 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:13" (1/1) ... [2019-10-13 19:53:13,277 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:13" (1/1) ... [2019-10-13 19:53:13,285 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:13" (1/1) ... [2019-10-13 19:53:13,287 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:13" (1/1) ... [2019-10-13 19:53:13,290 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:53:13,291 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:53:13,291 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:53:13,291 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:53:13,292 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:13" (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 19:53:13,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:53:13,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:53:13,344 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 19:53:13,345 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:53:13,345 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:53:13,345 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 19:53:13,346 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:53:13,346 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:53:13,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:53:13,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:53:13,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:53:13,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:53:13,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:53:13,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:53:13,802 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:53:13,802 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 19:53:13,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:53:13 BoogieIcfgContainer [2019-10-13 19:53:13,804 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:53:13,805 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:53:13,805 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:53:13,809 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:53:13,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:53:12" (1/3) ... [2019-10-13 19:53:13,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@633f4fe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:53:13, skipping insertion in model container [2019-10-13 19:53:13,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:13" (2/3) ... [2019-10-13 19:53:13,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@633f4fe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:53:13, skipping insertion in model container [2019-10-13 19:53:13,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:53:13" (3/3) ... [2019-10-13 19:53:13,815 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_copy8_ground-1.i [2019-10-13 19:53:13,825 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:53:13,837 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:53:13,849 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:53:13,877 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:53:13,877 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:53:13,877 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:53:13,877 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:53:13,878 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:53:13,878 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:53:13,878 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:53:13,878 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:53:13,897 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2019-10-13 19:53:13,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-13 19:53:13,903 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:13,904 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, 1, 1, 1, 1] [2019-10-13 19:53:13,906 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:13,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:13,910 INFO L82 PathProgramCache]: Analyzing trace with hash 661673386, now seen corresponding path program 1 times [2019-10-13 19:53:13,918 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:13,918 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818582453] [2019-10-13 19:53:13,918 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:13,919 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:13,919 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:14,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:14,084 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 19:53:14,085 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818582453] [2019-10-13 19:53:14,086 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:53:14,087 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 19:53:14,087 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541747451] [2019-10-13 19:53:14,093 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 19:53:14,095 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:14,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 19:53:14,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 19:53:14,114 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 2 states. [2019-10-13 19:53:14,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:14,145 INFO L93 Difference]: Finished difference Result 88 states and 127 transitions. [2019-10-13 19:53:14,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 19:53:14,146 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 29 [2019-10-13 19:53:14,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:14,156 INFO L225 Difference]: With dead ends: 88 [2019-10-13 19:53:14,157 INFO L226 Difference]: Without dead ends: 43 [2019-10-13 19:53:14,161 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 19:53:14,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-10-13 19:53:14,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2019-10-13 19:53:14,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-10-13 19:53:14,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2019-10-13 19:53:14,207 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 29 [2019-10-13 19:53:14,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:14,208 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2019-10-13 19:53:14,208 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 19:53:14,208 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2019-10-13 19:53:14,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-13 19:53:14,210 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:14,210 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, 1, 1, 1, 1] [2019-10-13 19:53:14,210 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:14,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:14,211 INFO L82 PathProgramCache]: Analyzing trace with hash 904564754, now seen corresponding path program 1 times [2019-10-13 19:53:14,211 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:14,212 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890139487] [2019-10-13 19:53:14,212 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:14,212 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:14,213 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:14,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:14,302 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 19:53:14,303 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890139487] [2019-10-13 19:53:14,303 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:53:14,303 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 19:53:14,304 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889524968] [2019-10-13 19:53:14,306 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:53:14,306 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:14,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:53:14,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:53:14,307 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand 3 states. [2019-10-13 19:53:14,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:14,340 INFO L93 Difference]: Finished difference Result 80 states and 98 transitions. [2019-10-13 19:53:14,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:53:14,342 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2019-10-13 19:53:14,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:14,343 INFO L225 Difference]: With dead ends: 80 [2019-10-13 19:53:14,344 INFO L226 Difference]: Without dead ends: 45 [2019-10-13 19:53:14,346 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 19:53:14,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-10-13 19:53:14,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2019-10-13 19:53:14,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-10-13 19:53:14,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2019-10-13 19:53:14,365 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 29 [2019-10-13 19:53:14,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:14,366 INFO L462 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2019-10-13 19:53:14,366 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:53:14,366 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2019-10-13 19:53:14,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-13 19:53:14,369 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:14,370 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, 1, 1, 1, 1, 1, 1] [2019-10-13 19:53:14,370 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:14,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:14,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1833019696, now seen corresponding path program 1 times [2019-10-13 19:53:14,372 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:14,373 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403966058] [2019-10-13 19:53:14,373 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:14,374 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:14,374 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:14,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:14,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 19:53:14,504 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403966058] [2019-10-13 19:53:14,504 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:53:14,504 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 19:53:14,505 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717793160] [2019-10-13 19:53:14,505 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:53:14,506 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:14,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:53:14,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:53:14,507 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 3 states. [2019-10-13 19:53:14,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:14,643 INFO L93 Difference]: Finished difference Result 92 states and 116 transitions. [2019-10-13 19:53:14,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:53:14,644 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2019-10-13 19:53:14,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:14,645 INFO L225 Difference]: With dead ends: 92 [2019-10-13 19:53:14,645 INFO L226 Difference]: Without dead ends: 60 [2019-10-13 19:53:14,646 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 19:53:14,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-10-13 19:53:14,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 52. [2019-10-13 19:53:14,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-10-13 19:53:14,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2019-10-13 19:53:14,657 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 31 [2019-10-13 19:53:14,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:14,657 INFO L462 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2019-10-13 19:53:14,658 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:53:14,658 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2019-10-13 19:53:14,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-13 19:53:14,661 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:14,662 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, 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 19:53:14,662 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:14,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:14,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1518385952, now seen corresponding path program 1 times [2019-10-13 19:53:14,663 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:14,663 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448805219] [2019-10-13 19:53:14,665 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:14,665 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:14,665 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:14,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:14,801 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-13 19:53:14,802 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448805219] [2019-10-13 19:53:14,802 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15108928] [2019-10-13 19:53:14,802 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 19:53:14,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:14,911 INFO L256 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:53:14,922 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:53:14,979 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-13 19:53:14,979 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 19:53:15,018 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-13 19:53:15,019 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [28843974] [2019-10-13 19:53:15,025 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 48 [2019-10-13 19:53:15,075 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-13 19:53:15,076 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-13 19:53:15,144 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-13 19:53:15,147 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 53 variables. [2019-10-13 19:53:15,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:15,150 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-13 19:53:15,193 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-13 19:53:15,194 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-13 19:53:15,196 INFO L553 sIntCurrentIteration]: We unified 46 AI predicates to 46 [2019-10-13 19:53:15,196 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-13 19:53:15,197 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-13 19:53:15,197 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4, 4] total 7 [2019-10-13 19:53:15,197 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596469371] [2019-10-13 19:53:15,198 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 19:53:15,199 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:15,199 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-13 19:53:15,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 19:53:15,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 19:53:15,200 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand 2 states. [2019-10-13 19:53:15,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:15,203 INFO L93 Difference]: Finished difference Result 52 states and 61 transitions. [2019-10-13 19:53:15,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 19:53:15,203 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 47 [2019-10-13 19:53:15,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:15,204 INFO L225 Difference]: With dead ends: 52 [2019-10-13 19:53:15,204 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 19:53:15,205 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 46 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 19:53:15,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 19:53:15,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 19:53:15,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 19:53:15,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 19:53:15,206 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 47 [2019-10-13 19:53:15,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:15,206 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 19:53:15,206 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 19:53:15,206 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 19:53:15,206 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 19:53:15,410 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:53:15,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 19:53:15,451 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-13 19:53:15,451 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-13 19:53:15,452 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:53:15,452 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:53:15,452 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-13 19:53:15,452 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-13 19:53:15,452 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-13 19:53:15,452 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 4 48) no Hoare annotation was computed. [2019-10-13 19:53:15,453 INFO L443 ceAbstractionStarter]: For program point L19-2(lines 19 21) no Hoare annotation was computed. [2019-10-13 19:53:15,453 INFO L439 ceAbstractionStarter]: At program point L19-3(lines 19 21) the Hoare annotation is: false [2019-10-13 19:53:15,453 INFO L443 ceAbstractionStarter]: For program point L19-4(lines 19 21) no Hoare annotation was computed. [2019-10-13 19:53:15,453 INFO L443 ceAbstractionStarter]: For program point L44-2(lines 44 46) no Hoare annotation was computed. [2019-10-13 19:53:15,453 INFO L439 ceAbstractionStarter]: At program point L44-3(lines 44 46) the Hoare annotation is: false [2019-10-13 19:53:15,453 INFO L443 ceAbstractionStarter]: For program point L44-4(lines 44 46) no Hoare annotation was computed. [2019-10-13 19:53:15,453 INFO L443 ceAbstractionStarter]: For program point L28-2(lines 28 30) no Hoare annotation was computed. [2019-10-13 19:53:15,454 INFO L439 ceAbstractionStarter]: At program point L28-3(lines 28 30) the Hoare annotation is: false [2019-10-13 19:53:15,454 INFO L443 ceAbstractionStarter]: For program point L28-4(lines 28 30) no Hoare annotation was computed. [2019-10-13 19:53:15,454 INFO L439 ceAbstractionStarter]: At program point L45(line 45) the Hoare annotation is: false [2019-10-13 19:53:15,454 INFO L443 ceAbstractionStarter]: For program point L45-1(line 45) no Hoare annotation was computed. [2019-10-13 19:53:15,455 INFO L443 ceAbstractionStarter]: For program point L37-2(lines 37 39) no Hoare annotation was computed. [2019-10-13 19:53:15,455 INFO L439 ceAbstractionStarter]: At program point L37-3(lines 37 39) the Hoare annotation is: false [2019-10-13 19:53:15,455 INFO L443 ceAbstractionStarter]: For program point L37-4(lines 37 39) no Hoare annotation was computed. [2019-10-13 19:53:15,455 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 4 48) no Hoare annotation was computed. [2019-10-13 19:53:15,455 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 4 48) the Hoare annotation is: true [2019-10-13 19:53:15,455 INFO L443 ceAbstractionStarter]: For program point L22-2(lines 22 24) no Hoare annotation was computed. [2019-10-13 19:53:15,456 INFO L439 ceAbstractionStarter]: At program point L22-3(lines 22 24) the Hoare annotation is: false [2019-10-13 19:53:15,456 INFO L443 ceAbstractionStarter]: For program point L22-4(lines 22 24) no Hoare annotation was computed. [2019-10-13 19:53:15,456 INFO L443 ceAbstractionStarter]: For program point L31-2(lines 31 33) no Hoare annotation was computed. [2019-10-13 19:53:15,456 INFO L439 ceAbstractionStarter]: At program point L31-3(lines 31 33) the Hoare annotation is: false [2019-10-13 19:53:15,456 INFO L443 ceAbstractionStarter]: For program point L31-4(lines 31 33) no Hoare annotation was computed. [2019-10-13 19:53:15,456 INFO L443 ceAbstractionStarter]: For program point L15-2(lines 15 17) no Hoare annotation was computed. [2019-10-13 19:53:15,456 INFO L439 ceAbstractionStarter]: At program point L15-3(lines 15 17) the Hoare annotation is: false [2019-10-13 19:53:15,457 INFO L443 ceAbstractionStarter]: For program point L15-4(lines 15 17) no Hoare annotation was computed. [2019-10-13 19:53:15,457 INFO L443 ceAbstractionStarter]: For program point L40-2(lines 40 42) no Hoare annotation was computed. [2019-10-13 19:53:15,457 INFO L439 ceAbstractionStarter]: At program point L40-3(lines 40 42) the Hoare annotation is: false [2019-10-13 19:53:15,457 INFO L443 ceAbstractionStarter]: For program point L40-4(lines 40 42) no Hoare annotation was computed. [2019-10-13 19:53:15,457 INFO L443 ceAbstractionStarter]: For program point L25-2(lines 25 27) no Hoare annotation was computed. [2019-10-13 19:53:15,457 INFO L439 ceAbstractionStarter]: At program point L25-3(lines 25 27) the Hoare annotation is: false [2019-10-13 19:53:15,458 INFO L443 ceAbstractionStarter]: For program point L25-4(lines 25 27) no Hoare annotation was computed. [2019-10-13 19:53:15,458 INFO L443 ceAbstractionStarter]: For program point L34-2(lines 34 36) no Hoare annotation was computed. [2019-10-13 19:53:15,459 INFO L439 ceAbstractionStarter]: At program point L34-3(lines 34 36) the Hoare annotation is: false [2019-10-13 19:53:15,459 INFO L443 ceAbstractionStarter]: For program point L34-4(lines 34 36) no Hoare annotation was computed. [2019-10-13 19:53:15,459 INFO L443 ceAbstractionStarter]: For program point L2-1(line 2) no Hoare annotation was computed. [2019-10-13 19:53:15,462 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2019-10-13 19:53:15,463 INFO L443 ceAbstractionStarter]: For program point L2-3(line 2) no Hoare annotation was computed. [2019-10-13 19:53:15,464 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2019-10-13 19:53:15,464 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2019-10-13 19:53:15,465 INFO L443 ceAbstractionStarter]: For program point L2(line 2) no Hoare annotation was computed. [2019-10-13 19:53:15,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:53:15 BoogieIcfgContainer [2019-10-13 19:53:15,473 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 19:53:15,476 INFO L168 Benchmark]: Toolchain (without parser) took 2626.71 ms. Allocated memory was 143.1 MB in the beginning and 229.6 MB in the end (delta: 86.5 MB). Free memory was 101.5 MB in the beginning and 171.5 MB in the end (delta: -70.0 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:15,477 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 143.1 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-13 19:53:15,478 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.06 ms. Allocated memory is still 143.1 MB. Free memory was 101.3 MB in the beginning and 90.4 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:15,479 INFO L168 Benchmark]: Boogie Preprocessor took 134.40 ms. Allocated memory was 143.1 MB in the beginning and 200.3 MB in the end (delta: 57.1 MB). Free memory was 90.4 MB in the beginning and 177.6 MB in the end (delta: -87.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:15,480 INFO L168 Benchmark]: RCFGBuilder took 512.90 ms. Allocated memory is still 200.3 MB. Free memory was 177.6 MB in the beginning and 154.4 MB in the end (delta: 23.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:15,481 INFO L168 Benchmark]: TraceAbstraction took 1668.35 ms. Allocated memory was 200.3 MB in the beginning and 229.6 MB in the end (delta: 29.4 MB). Free memory was 153.7 MB in the beginning and 171.5 MB in the end (delta: -17.8 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:15,485 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 143.1 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 304.06 ms. Allocated memory is still 143.1 MB. Free memory was 101.3 MB in the beginning and 90.4 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 134.40 ms. Allocated memory was 143.1 MB in the beginning and 200.3 MB in the end (delta: 57.1 MB). Free memory was 90.4 MB in the beginning and 177.6 MB in the end (delta: -87.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 512.90 ms. Allocated memory is still 200.3 MB. Free memory was 177.6 MB in the beginning and 154.4 MB in the end (delta: 23.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1668.35 ms. Allocated memory was 200.3 MB in the beginning and 229.6 MB in the end (delta: 29.4 MB). Free memory was 153.7 MB in the beginning and 171.5 MB in the end (delta: -17.8 MB). Peak memory consumption was 11.6 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: 25]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 48 locations, 1 error locations. Result: SAFE, OverallTime: 1.5s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 148 SDtfs, 9 SDslu, 68 SDs, 0 SdLazy, 45 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=3, 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, 4 MinimizatonAttempts, 9 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 16 LocationsWithAnnotation, 19 PreInvPairs, 19 NumberOfFragments, 16 HoareAnnotationTreeSize, 19 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 16 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 183 NumberOfCodeBlocks, 183 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 224 ConstructedInterpolants, 0 QuantifiedInterpolants, 9760 SizeOfPredicates, 1 NumberOfNonLiveVariables, 164 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 25/28 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 126, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.8967391304347826, AVG_VARS_REMOVED_DURING_WEAKENING: 1.108695652173913, AVG_WEAKENED_CONJUNCTS: 0.13043478260869565, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...