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-industry-pattern/array_mul_init.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:53:34,898 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:53:34,901 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:53:34,919 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:53:34,920 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:53:34,922 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:53:34,924 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:53:34,933 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:53:34,937 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:53:34,941 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:53:34,942 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:53:34,944 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:53:34,944 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:53:34,946 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:53:34,948 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:53:34,949 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:53:34,951 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:53:34,952 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:53:34,953 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:53:34,958 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:53:34,962 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:53:34,965 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:53:34,968 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:53:34,968 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:53:34,970 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 19:53:34,980 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:53:34,981 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:53:34,982 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:53:34,983 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 19:53:35,010 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:53:35,011 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:53:35,014 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:53:35,015 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:53:35,015 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:53:35,015 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:53:35,015 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:53:35,015 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:53:35,016 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:53:35,016 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:53:35,017 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:53:35,017 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:53:35,017 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:53:35,018 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:53:35,018 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:53:35,018 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:53:35,019 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:53:35,019 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:53:35,019 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:53:35,019 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:53:35,019 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:53:35,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:53:35,020 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:53:35,020 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:53:35,020 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:53:35,021 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:53:35,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:53:35,021 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:53:35,021 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 19:53:35,317 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:53:35,330 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:53:35,334 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:53:35,335 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:53:35,336 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:53:35,336 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-industry-pattern/array_mul_init.i [2019-10-13 19:53:35,415 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a315c60a/bc5c4058d6924c09a35fa16ab337a4ee/FLAG1a8008e9b [2019-10-13 19:53:35,911 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:53:35,912 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-industry-pattern/array_mul_init.i [2019-10-13 19:53:35,918 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a315c60a/bc5c4058d6924c09a35fa16ab337a4ee/FLAG1a8008e9b [2019-10-13 19:53:36,344 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a315c60a/bc5c4058d6924c09a35fa16ab337a4ee [2019-10-13 19:53:36,355 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:53:36,357 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:53:36,362 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:53:36,362 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:53:36,366 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:53:36,367 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:53:36" (1/1) ... [2019-10-13 19:53:36,370 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6281f1ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:36, skipping insertion in model container [2019-10-13 19:53:36,370 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:53:36" (1/1) ... [2019-10-13 19:53:36,379 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:53:36,397 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:53:36,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:53:36,600 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:53:36,621 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:53:36,640 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:53:36,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:36 WrapperNode [2019-10-13 19:53:36,641 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:53:36,641 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:53:36,642 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:53:36,642 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:53:36,741 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:36" (1/1) ... [2019-10-13 19:53:36,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:36" (1/1) ... [2019-10-13 19:53:36,749 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:36" (1/1) ... [2019-10-13 19:53:36,750 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:36" (1/1) ... [2019-10-13 19:53:36,757 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:36" (1/1) ... [2019-10-13 19:53:36,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:36" (1/1) ... [2019-10-13 19:53:36,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:36" (1/1) ... [2019-10-13 19:53:36,766 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:53:36,767 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:53:36,767 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:53:36,767 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:53:36,768 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:36" (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 19:53:36,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:53:36,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:53:36,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 19:53:36,823 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:53:36,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:53:36,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 19:53:36,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2019-10-13 19:53:36,823 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:53:36,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:53:36,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:53:36,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:53:36,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:53:36,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:53:36,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:53:37,085 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:53:37,085 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-13 19:53:37,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:53:37 BoogieIcfgContainer [2019-10-13 19:53:37,087 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:53:37,089 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:53:37,089 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:53:37,093 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:53:37,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:53:36" (1/3) ... [2019-10-13 19:53:37,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38e1b6ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:53:37, skipping insertion in model container [2019-10-13 19:53:37,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:36" (2/3) ... [2019-10-13 19:53:37,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38e1b6ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:53:37, skipping insertion in model container [2019-10-13 19:53:37,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:53:37" (3/3) ... [2019-10-13 19:53:37,098 INFO L109 eAbstractionObserver]: Analyzing ICFG array_mul_init.i [2019-10-13 19:53:37,111 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:53:37,136 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:53:37,149 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:53:37,173 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:53:37,174 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:53:37,174 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:53:37,174 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:53:37,175 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:53:37,175 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:53:37,175 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:53:37,175 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:53:37,194 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2019-10-13 19:53:37,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-13 19:53:37,200 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:37,201 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:53:37,203 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:37,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:37,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1583089931, now seen corresponding path program 1 times [2019-10-13 19:53:37,215 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:37,215 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702951180] [2019-10-13 19:53:37,215 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:37,215 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:37,215 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:37,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:37,345 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 19:53:37,346 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702951180] [2019-10-13 19:53:37,347 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:53:37,347 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 19:53:37,348 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660736183] [2019-10-13 19:53:37,351 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 19:53:37,353 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:37,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 19:53:37,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 19:53:37,367 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2019-10-13 19:53:37,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:37,390 INFO L93 Difference]: Finished difference Result 50 states and 65 transitions. [2019-10-13 19:53:37,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 19:53:37,392 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-10-13 19:53:37,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:37,398 INFO L225 Difference]: With dead ends: 50 [2019-10-13 19:53:37,399 INFO L226 Difference]: Without dead ends: 24 [2019-10-13 19:53:37,402 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 19:53:37,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-10-13 19:53:37,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-10-13 19:53:37,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-10-13 19:53:37,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2019-10-13 19:53:37,438 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 16 [2019-10-13 19:53:37,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:37,438 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-10-13 19:53:37,438 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 19:53:37,439 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2019-10-13 19:53:37,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-13 19:53:37,440 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:37,440 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:53:37,440 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:37,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:37,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1899913894, now seen corresponding path program 1 times [2019-10-13 19:53:37,441 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:37,441 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999962562] [2019-10-13 19:53:37,441 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:37,442 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:37,442 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:37,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:37,496 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 19:53:37,497 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999962562] [2019-10-13 19:53:37,497 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:53:37,498 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 19:53:37,498 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450315811] [2019-10-13 19:53:37,500 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:53:37,500 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:37,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:53:37,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:53:37,501 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 3 states. [2019-10-13 19:53:37,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:37,565 INFO L93 Difference]: Finished difference Result 50 states and 62 transitions. [2019-10-13 19:53:37,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:53:37,566 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-10-13 19:53:37,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:37,569 INFO L225 Difference]: With dead ends: 50 [2019-10-13 19:53:37,569 INFO L226 Difference]: Without dead ends: 34 [2019-10-13 19:53:37,570 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 19:53:37,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-10-13 19:53:37,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 26. [2019-10-13 19:53:37,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-10-13 19:53:37,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2019-10-13 19:53:37,583 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 16 [2019-10-13 19:53:37,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:37,583 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2019-10-13 19:53:37,583 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:53:37,584 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2019-10-13 19:53:37,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-13 19:53:37,585 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:37,585 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] [2019-10-13 19:53:37,585 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:37,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:37,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1536301701, now seen corresponding path program 1 times [2019-10-13 19:53:37,586 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:37,586 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928494664] [2019-10-13 19:53:37,587 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:37,587 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:37,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:37,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:37,702 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 19:53:37,702 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928494664] [2019-10-13 19:53:37,703 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:53:37,703 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:53:37,703 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342876278] [2019-10-13 19:53:37,704 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:53:37,704 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:37,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:53:37,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:53:37,705 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 5 states. [2019-10-13 19:53:37,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:37,762 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2019-10-13 19:53:37,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 19:53:37,763 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2019-10-13 19:53:37,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:37,764 INFO L225 Difference]: With dead ends: 34 [2019-10-13 19:53:37,764 INFO L226 Difference]: Without dead ends: 32 [2019-10-13 19:53:37,765 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:53:37,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-10-13 19:53:37,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2019-10-13 19:53:37,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-10-13 19:53:37,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2019-10-13 19:53:37,772 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 21 [2019-10-13 19:53:37,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:37,773 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2019-10-13 19:53:37,773 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:53:37,773 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2019-10-13 19:53:37,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-13 19:53:37,774 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:37,775 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] [2019-10-13 19:53:37,775 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:37,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:37,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1534454659, now seen corresponding path program 1 times [2019-10-13 19:53:37,776 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:37,776 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130246362] [2019-10-13 19:53:37,776 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:37,777 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:37,777 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:37,796 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 19:53:37,796 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2030893005] [2019-10-13 19:53:37,796 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 19:53:37,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:37,858 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:53:37,864 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:53:37,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 19:53:37,899 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 19:53:37,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 19:53:37,938 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130246362] [2019-10-13 19:53:37,939 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 19:53:37,939 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030893005] [2019-10-13 19:53:37,939 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1318804205] [2019-10-13 19:53:37,946 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 22 [2019-10-13 19:53:37,987 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-13 19:53:37,987 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-13 19:53:38,049 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-13 19:53:38,051 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 27 variables. [2019-10-13 19:53:38,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:38,054 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-13 19:53:38,089 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-13 19:53:38,089 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-13 19:53:38,091 INFO L553 sIntCurrentIteration]: We unified 20 AI predicates to 20 [2019-10-13 19:53:38,091 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-13 19:53:38,092 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 19:53:38,092 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4] total 6 [2019-10-13 19:53:38,092 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203613867] [2019-10-13 19:53:38,093 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 19:53:38,094 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:38,094 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-13 19:53:38,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 19:53:38,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 19:53:38,095 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 2 states. [2019-10-13 19:53:38,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:38,097 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2019-10-13 19:53:38,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 19:53:38,098 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2019-10-13 19:53:38,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:38,098 INFO L225 Difference]: With dead ends: 31 [2019-10-13 19:53:38,099 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 19:53:38,099 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 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 19:53:38,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 19:53:38,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 19:53:38,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 19:53:38,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 19:53:38,100 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2019-10-13 19:53:38,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:38,101 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 19:53:38,101 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 19:53:38,101 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 19:53:38,101 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 19:53:38,307 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:53:38,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 19:53:38,355 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-13 19:53:38,355 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-13 19:53:38,355 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:53:38,355 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:53:38,356 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-13 19:53:38,356 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-13 19:53:38,356 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-13 19:53:38,356 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 4 28) no Hoare annotation was computed. [2019-10-13 19:53:38,356 INFO L443 ceAbstractionStarter]: For program point L15-2(lines 15 23) no Hoare annotation was computed. [2019-10-13 19:53:38,357 INFO L439 ceAbstractionStarter]: At program point L15-3(lines 15 23) the Hoare annotation is: false [2019-10-13 19:53:38,357 INFO L443 ceAbstractionStarter]: For program point L15-4(lines 15 23) no Hoare annotation was computed. [2019-10-13 19:53:38,357 INFO L443 ceAbstractionStarter]: For program point L24-2(lines 24 27) no Hoare annotation was computed. [2019-10-13 19:53:38,357 INFO L439 ceAbstractionStarter]: At program point L24-3(lines 24 27) the Hoare annotation is: false [2019-10-13 19:53:38,357 INFO L443 ceAbstractionStarter]: For program point L24-4(lines 24 27) no Hoare annotation was computed. [2019-10-13 19:53:38,358 INFO L443 ceAbstractionStarter]: For program point L17(lines 17 22) no Hoare annotation was computed. [2019-10-13 19:53:38,358 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 4 28) no Hoare annotation was computed. [2019-10-13 19:53:38,358 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 4 28) the Hoare annotation is: true [2019-10-13 19:53:38,358 INFO L443 ceAbstractionStarter]: For program point L26(line 26) no Hoare annotation was computed. [2019-10-13 19:53:38,358 INFO L439 ceAbstractionStarter]: At program point L26-2(line 26) the Hoare annotation is: false [2019-10-13 19:53:38,359 INFO L443 ceAbstractionStarter]: For program point L26-3(line 26) no Hoare annotation was computed. [2019-10-13 19:53:38,359 INFO L443 ceAbstractionStarter]: For program point L10-2(lines 10 14) no Hoare annotation was computed. [2019-10-13 19:53:38,359 INFO L439 ceAbstractionStarter]: At program point L10-3(lines 10 14) the Hoare annotation is: false [2019-10-13 19:53:38,359 INFO L443 ceAbstractionStarter]: For program point L10-4(lines 10 14) no Hoare annotation was computed. [2019-10-13 19:53:38,359 INFO L443 ceAbstractionStarter]: For program point L2-1(line 2) no Hoare annotation was computed. [2019-10-13 19:53:38,360 INFO L443 ceAbstractionStarter]: For program point L2-3(line 2) no Hoare annotation was computed. [2019-10-13 19:53:38,360 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2019-10-13 19:53:38,360 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2019-10-13 19:53:38,360 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2019-10-13 19:53:38,360 INFO L443 ceAbstractionStarter]: For program point L2(line 2) no Hoare annotation was computed. [2019-10-13 19:53:38,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:53:38 BoogieIcfgContainer [2019-10-13 19:53:38,370 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 19:53:38,372 INFO L168 Benchmark]: Toolchain (without parser) took 2014.45 ms. Allocated memory was 145.2 MB in the beginning and 203.4 MB in the end (delta: 58.2 MB). Free memory was 103.0 MB in the beginning and 95.0 MB in the end (delta: 8.0 MB). Peak memory consumption was 66.2 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:38,373 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 145.2 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-10-13 19:53:38,374 INFO L168 Benchmark]: CACSL2BoogieTranslator took 278.92 ms. Allocated memory is still 145.2 MB. Free memory was 102.8 MB in the beginning and 92.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:38,375 INFO L168 Benchmark]: Boogie Preprocessor took 124.88 ms. Allocated memory was 145.2 MB in the beginning and 203.4 MB in the end (delta: 58.2 MB). Free memory was 92.8 MB in the beginning and 180.8 MB in the end (delta: -88.1 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:38,376 INFO L168 Benchmark]: RCFGBuilder took 320.75 ms. Allocated memory is still 203.4 MB. Free memory was 180.8 MB in the beginning and 165.4 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:38,377 INFO L168 Benchmark]: TraceAbstraction took 1280.77 ms. Allocated memory is still 203.4 MB. Free memory was 165.4 MB in the beginning and 95.0 MB in the end (delta: 70.4 MB). Peak memory consumption was 70.4 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:38,381 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 145.2 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 278.92 ms. Allocated memory is still 145.2 MB. Free memory was 102.8 MB in the beginning and 92.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.88 ms. Allocated memory was 145.2 MB in the beginning and 203.4 MB in the end (delta: 58.2 MB). Free memory was 92.8 MB in the beginning and 180.8 MB in the end (delta: -88.1 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 320.75 ms. Allocated memory is still 203.4 MB. Free memory was 180.8 MB in the beginning and 165.4 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1280.77 ms. Allocated memory is still 203.4 MB. Free memory was 165.4 MB in the beginning and 95.0 MB in the end (delta: 70.4 MB). Peak memory consumption was 70.4 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: 15]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 29 locations, 1 error locations. Result: SAFE, OverallTime: 1.1s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 85 SDtfs, 14 SDslu, 87 SDs, 0 SdLazy, 32 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred 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, 9 LocationsWithAnnotation, 12 PreInvPairs, 12 NumberOfFragments, 9 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 2040 SizeOfPredicates, 1 NumberOfNonLiveVariables, 83 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 4/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 109, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.925, AVG_VARS_REMOVED_DURING_WEAKENING: 1.0, AVG_WEAKENED_CONJUNCTS: 0.3, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...