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/ldv-regression/test10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:01:32,217 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:01:32,219 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:01:32,231 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:01:32,231 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:01:32,232 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:01:32,234 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:01:32,236 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:01:32,237 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:01:32,238 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:01:32,239 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:01:32,240 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:01:32,241 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:01:32,242 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:01:32,243 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:01:32,244 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:01:32,244 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:01:32,245 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:01:32,247 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:01:32,249 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:01:32,251 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:01:32,252 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:01:32,253 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:01:32,254 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:01:32,256 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 01:01:32,263 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:01:32,264 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:01:32,265 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:01:32,266 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:01:32,280 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:01:32,280 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:01:32,281 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:01:32,281 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:01:32,282 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:01:32,282 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:01:32,282 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:01:32,282 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:01:32,282 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:01:32,283 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:01:32,283 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:01:32,283 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:01:32,283 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:01:32,283 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:01:32,284 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:01:32,284 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:01:32,284 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:01:32,284 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:01:32,285 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:01:32,285 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:01:32,285 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:01:32,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:01:32,285 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:01:32,286 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:01:32,286 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:01:32,286 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:01:32,286 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:01:32,286 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:01:32,287 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:01:32,589 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:01:32,603 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:01:32,606 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:01:32,607 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:01:32,608 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:01:32,608 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test10.c [2019-10-15 01:01:32,684 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/865b53ef4/7f791a23fa984e9a8531ed5bb803be30/FLAG725e3218f [2019-10-15 01:01:33,130 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:01:33,130 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test10.c [2019-10-15 01:01:33,138 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/865b53ef4/7f791a23fa984e9a8531ed5bb803be30/FLAG725e3218f [2019-10-15 01:01:33,504 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/865b53ef4/7f791a23fa984e9a8531ed5bb803be30 [2019-10-15 01:01:33,515 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:01:33,517 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:01:33,519 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:01:33,519 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:01:33,523 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:01:33,525 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:01:33" (1/1) ... [2019-10-15 01:01:33,528 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a725cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:33, skipping insertion in model container [2019-10-15 01:01:33,528 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:01:33" (1/1) ... [2019-10-15 01:01:33,538 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:01:33,562 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:01:33,768 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:01:33,781 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:01:33,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:01:33,820 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:01:33,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:33 WrapperNode [2019-10-15 01:01:33,820 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:01:33,821 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:01:33,821 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:01:33,821 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:01:33,919 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:33" (1/1) ... [2019-10-15 01:01:33,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:33" (1/1) ... [2019-10-15 01:01:33,931 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:33" (1/1) ... [2019-10-15 01:01:33,932 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:33" (1/1) ... [2019-10-15 01:01:33,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:33" (1/1) ... [2019-10-15 01:01:33,942 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:33" (1/1) ... [2019-10-15 01:01:33,944 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:33" (1/1) ... [2019-10-15 01:01:33,946 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:01:33,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:01:33,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:01:33,947 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:01:33,948 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:01:34,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:01:34,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:01:34,023 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2019-10-15 01:01:34,023 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:01:34,023 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:01:34,023 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:01:34,024 INFO L130 BoogieDeclarations]: Found specification of procedure f [2019-10-15 01:01:34,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:01:34,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:01:34,025 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:01:34,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:01:34,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:01:34,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:01:34,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:01:34,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:01:34,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-15 01:01:34,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:01:34,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:01:34,449 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:01:34,449 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-15 01:01:34,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:01:34 BoogieIcfgContainer [2019-10-15 01:01:34,450 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:01:34,452 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:01:34,452 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:01:34,455 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:01:34,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:01:33" (1/3) ... [2019-10-15 01:01:34,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a221b25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:01:34, skipping insertion in model container [2019-10-15 01:01:34,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:33" (2/3) ... [2019-10-15 01:01:34,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a221b25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:01:34, skipping insertion in model container [2019-10-15 01:01:34,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:01:34" (3/3) ... [2019-10-15 01:01:34,460 INFO L109 eAbstractionObserver]: Analyzing ICFG test10.c [2019-10-15 01:01:34,469 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:01:34,476 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:01:34,486 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:01:34,512 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:01:34,512 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:01:34,513 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:01:34,513 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:01:34,513 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:01:34,513 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:01:34,513 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:01:34,514 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:01:34,532 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-10-15 01:01:34,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-15 01:01:34,539 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:01:34,540 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:01:34,542 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:01:34,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:01:34,547 INFO L82 PathProgramCache]: Analyzing trace with hash -320886355, now seen corresponding path program 1 times [2019-10-15 01:01:34,554 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:01:34,555 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29639098] [2019-10-15 01:01:34,555 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:01:34,555 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:01:34,556 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:01:34,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:01:35,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:01:35,255 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29639098] [2019-10-15 01:01:35,256 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:01:35,257 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 01:01:35,258 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139789621] [2019-10-15 01:01:35,264 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 01:01:35,266 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:01:35,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 01:01:35,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:01:35,285 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 8 states. [2019-10-15 01:01:35,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:01:35,900 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2019-10-15 01:01:35,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-15 01:01:35,903 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2019-10-15 01:01:35,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:01:35,913 INFO L225 Difference]: With dead ends: 26 [2019-10-15 01:01:35,913 INFO L226 Difference]: Without dead ends: 15 [2019-10-15 01:01:35,917 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2019-10-15 01:01:35,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-10-15 01:01:35,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-10-15 01:01:35,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-10-15 01:01:35,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2019-10-15 01:01:35,967 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 14 [2019-10-15 01:01:35,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:01:35,967 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2019-10-15 01:01:35,968 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 01:01:35,968 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2019-10-15 01:01:35,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-15 01:01:35,969 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:01:35,969 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:01:35,970 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:01:35,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:01:35,971 INFO L82 PathProgramCache]: Analyzing trace with hash -320884433, now seen corresponding path program 1 times [2019-10-15 01:01:35,971 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:01:35,972 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251251476] [2019-10-15 01:01:35,972 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:01:35,972 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:01:35,972 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:01:36,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:01:36,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:01:36,315 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251251476] [2019-10-15 01:01:36,315 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:01:36,315 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-15 01:01:36,316 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401789913] [2019-10-15 01:01:36,317 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:01:36,318 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:01:36,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:01:36,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:01:36,319 INFO L87 Difference]: Start difference. First operand 15 states and 14 transitions. Second operand 9 states. [2019-10-15 01:01:36,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:01:36,975 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2019-10-15 01:01:36,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-15 01:01:36,976 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2019-10-15 01:01:36,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:01:36,976 INFO L225 Difference]: With dead ends: 15 [2019-10-15 01:01:36,976 INFO L226 Difference]: Without dead ends: 0 [2019-10-15 01:01:36,978 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:01:36,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-15 01:01:36,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-15 01:01:36,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-15 01:01:36,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-15 01:01:36,979 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2019-10-15 01:01:36,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:01:36,980 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-15 01:01:36,980 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:01:36,980 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-15 01:01:36,980 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-15 01:01:36,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-15 01:01:37,223 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-15 01:01:37,223 INFO L439 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~pp2~0.base |old(~pp2~0.base)|) (= |old(~pp2~0.offset)| ~pp2~0.offset)) [2019-10-15 01:01:37,224 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-15 01:01:37,224 INFO L443 ceAbstractionStarter]: For program point fEXIT(lines 9 14) no Hoare annotation was computed. [2019-10-15 01:01:37,224 INFO L439 ceAbstractionStarter]: At program point fENTRY(lines 9 14) the Hoare annotation is: (or (not (= ~pp1~0.base |~#p1~0.base|)) (not (= (select (select |old(#memory_$Pointer$.base)| |old(~pp2~0.base)|) |old(~pp2~0.offset)|) |~#b~0.base|)) (= |~#a~0.base| |~#b~0.base|) (= |~#p2~0.base| |~#b~0.base|) (= |~#a~0.base| |~#p1~0.base|) (= |~#p2~0.base| |~#a~0.base|) (not (= ~pp1~0.offset |~#p1~0.offset|)) (not (= (select (select |old(#memory_$Pointer$.offset)| |old(~pp2~0.base)|) |old(~pp2~0.offset)|) |~#b~0.offset|)) (= ~pp1~0.base |~#b~0.base|) (and (= (select |old(#memory_$Pointer$.base)| ~pp2~0.base) (select |#memory_$Pointer$.base| ~pp2~0.base)) (= ~pp2~0.base |old(~pp2~0.base)|) (= (select |old(#memory_$Pointer$.offset)| ~pp2~0.base) (select |#memory_$Pointer$.offset| ~pp2~0.base)) (= |old(~pp2~0.offset)| ~pp2~0.offset))) [2019-10-15 01:01:37,225 INFO L443 ceAbstractionStarter]: For program point fFINAL(lines 9 14) no Hoare annotation was computed. [2019-10-15 01:01:37,225 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-15 01:01:37,225 INFO L439 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (and (not (= |~#b~0.base| |~#p1~0.base|)) (not (= |~#p2~0.base| |~#a~0.base|)) (not (= |~#b~0.base| |~#p2~0.base|)) (not (= |~#b~0.base| |~#a~0.base|)) (not (= |~#p1~0.base| |~#a~0.base|))) [2019-10-15 01:01:37,225 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-15 01:01:37,225 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-15 01:01:37,226 INFO L439 ceAbstractionStarter]: At program point L31(line 31) the Hoare annotation is: (or (and (= |~#b~0.base| (select (select |#memory_$Pointer$.base| ~pp2~0.base) ~pp2~0.offset)) (= |~#p1~0.base| ~pp1~0.base) (= |~#p1~0.offset| ~pp1~0.offset) (= (select (select |#memory_$Pointer$.offset| ~pp2~0.base) ~pp2~0.offset) |~#b~0.offset|)) (= |~#a~0.base| |~#b~0.base|) (= |~#p2~0.base| |~#b~0.base|) (= |~#a~0.base| |~#p1~0.base|) (= |~#p2~0.base| |~#a~0.base|) (= |~#p1~0.base| |~#b~0.base|)) [2019-10-15 01:01:37,226 INFO L443 ceAbstractionStarter]: For program point L31-1(line 31) no Hoare annotation was computed. [2019-10-15 01:01:37,226 INFO L439 ceAbstractionStarter]: At program point mainENTRY(lines 16 49) the Hoare annotation is: (or (= |~#a~0.base| |~#b~0.base|) (= |~#p2~0.base| |~#b~0.base|) (and (= ~pp2~0.base |old(~pp2~0.base)|) (= (select |old(#memory_$Pointer$.base)| ~pp2~0.base) (select |#memory_$Pointer$.base| ~pp2~0.base)) (= (select |old(#memory_$Pointer$.offset)| ~pp2~0.base) (select |#memory_$Pointer$.offset| ~pp2~0.base)) (= |old(~pp2~0.offset)| ~pp2~0.offset)) (= |~#a~0.base| |~#p1~0.base|) (= |~#p2~0.base| |~#a~0.base|) (= |~#p1~0.base| |~#b~0.base|)) [2019-10-15 01:01:37,227 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 47) no Hoare annotation was computed. [2019-10-15 01:01:37,227 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 16 49) no Hoare annotation was computed. [2019-10-15 01:01:37,227 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 16 49) no Hoare annotation was computed. [2019-10-15 01:01:37,227 INFO L439 ceAbstractionStarter]: At program point L42(lines 16 49) the Hoare annotation is: (or (= |~#a~0.base| |~#b~0.base|) (= |~#p2~0.base| |~#b~0.base|) (= |~#a~0.base| |~#p1~0.base|) (= |~#p2~0.base| |~#a~0.base|) (= |~#p1~0.base| |~#b~0.base|)) [2019-10-15 01:01:37,227 INFO L443 ceAbstractionStarter]: For program point L41(line 41) no Hoare annotation was computed. [2019-10-15 01:01:37,227 INFO L443 ceAbstractionStarter]: For program point L41-2(lines 41 43) no Hoare annotation was computed. [2019-10-15 01:01:37,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 01:01:37 BoogieIcfgContainer [2019-10-15 01:01:37,243 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-15 01:01:37,248 INFO L168 Benchmark]: Toolchain (without parser) took 3728.00 ms. Allocated memory was 141.6 MB in the beginning and 255.3 MB in the end (delta: 113.8 MB). Free memory was 99.2 MB in the beginning and 175.9 MB in the end (delta: -76.8 MB). Peak memory consumption was 37.0 MB. Max. memory is 7.1 GB. [2019-10-15 01:01:37,250 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 141.6 MB. Free memory was 117.9 MB in the beginning and 117.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-15 01:01:37,251 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.82 ms. Allocated memory is still 141.6 MB. Free memory was 98.9 MB in the beginning and 88.9 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2019-10-15 01:01:37,252 INFO L168 Benchmark]: Boogie Preprocessor took 125.45 ms. Allocated memory was 141.6 MB in the beginning and 198.7 MB in the end (delta: 57.1 MB). Free memory was 88.9 MB in the beginning and 176.4 MB in the end (delta: -87.5 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2019-10-15 01:01:37,253 INFO L168 Benchmark]: RCFGBuilder took 503.60 ms. Allocated memory is still 198.7 MB. Free memory was 176.4 MB in the beginning and 156.7 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. [2019-10-15 01:01:37,254 INFO L168 Benchmark]: TraceAbstraction took 2791.26 ms. Allocated memory was 198.7 MB in the beginning and 255.3 MB in the end (delta: 56.6 MB). Free memory was 156.0 MB in the beginning and 175.9 MB in the end (delta: -19.9 MB). Peak memory consumption was 36.7 MB. Max. memory is 7.1 GB. [2019-10-15 01:01:37,259 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 141.6 MB. Free memory was 117.9 MB in the beginning and 117.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 301.82 ms. Allocated memory is still 141.6 MB. Free memory was 98.9 MB in the beginning and 88.9 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.45 ms. Allocated memory was 141.6 MB in the beginning and 198.7 MB in the end (delta: 57.1 MB). Free memory was 88.9 MB in the beginning and 176.4 MB in the end (delta: -87.5 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 503.60 ms. Allocated memory is still 198.7 MB. Free memory was 176.4 MB in the beginning and 156.7 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2791.26 ms. Allocated memory was 198.7 MB in the beginning and 255.3 MB in the end (delta: 56.6 MB). Free memory was 156.0 MB in the beginning and 175.9 MB in the end (delta: -19.9 MB). Peak memory consumption was 36.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 47]: 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: 16]: Loop Invariant Derived loop invariant: (((a == b || p2 == b) || a == p1) || p2 == a) || p1 == b - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. Result: SAFE, OverallTime: 2.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, HoareTripleCheckerStatistics: 18 SDtfs, 20 SDslu, 53 SDs, 0 SdLazy, 81 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 180 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 94 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 5772 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...