/usr/bin/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 -i ../../../trunk/examples/svcomp/recursive/BallRajamani-SPIN2000-Fig1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 16:18:47,213 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 16:18:47,216 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 16:18:47,239 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 16:18:47,240 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 16:18:47,241 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 16:18:47,242 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 16:18:47,244 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 16:18:47,246 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 16:18:47,247 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 16:18:47,248 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 16:18:47,249 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 16:18:47,249 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 16:18:47,250 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 16:18:47,251 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 16:18:47,252 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 16:18:47,253 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 16:18:47,254 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 16:18:47,256 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 16:18:47,258 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 16:18:47,259 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 16:18:47,260 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 16:18:47,265 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 16:18:47,266 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 16:18:47,271 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 16:18:47,284 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 16:18:47,285 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 16:18:47,286 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 16:18:47,287 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 [2020-08-22 16:18:47,341 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 16:18:47,345 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 16:18:47,346 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 16:18:47,347 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 16:18:47,347 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 16:18:47,347 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 16:18:47,347 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 16:18:47,347 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 16:18:47,348 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 16:18:47,349 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 16:18:47,349 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 16:18:47,349 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 16:18:47,349 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 16:18:47,349 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 16:18:47,350 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 16:18:47,350 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 16:18:47,350 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 16:18:47,350 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 16:18:47,350 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 16:18:47,351 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 16:18:47,352 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 16:18:47,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:18:47,352 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 16:18:47,352 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 16:18:47,353 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 16:18:47,353 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 16:18:47,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 16:18:47,353 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 16:18:47,353 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 16:18:47,354 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 16:18:47,667 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 16:18:47,688 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 16:18:47,691 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 16:18:47,693 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 16:18:47,694 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 16:18:47,695 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/BallRajamani-SPIN2000-Fig1.c [2020-08-22 16:18:47,771 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b92198fb/d05669262c75495187f830f43446bb03/FLAGc66af15ca [2020-08-22 16:18:48,206 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 16:18:48,207 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/BallRajamani-SPIN2000-Fig1.c [2020-08-22 16:18:48,213 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b92198fb/d05669262c75495187f830f43446bb03/FLAGc66af15ca [2020-08-22 16:18:48,584 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b92198fb/d05669262c75495187f830f43446bb03 [2020-08-22 16:18:48,593 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 16:18:48,595 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 16:18:48,597 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 16:18:48,597 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 16:18:48,601 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 16:18:48,602 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:18:48" (1/1) ... [2020-08-22 16:18:48,605 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e09f978 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:18:48, skipping insertion in model container [2020-08-22 16:18:48,605 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:18:48" (1/1) ... [2020-08-22 16:18:48,613 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 16:18:48,630 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 16:18:48,799 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:18:48,804 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 16:18:48,821 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:18:48,837 INFO L208 MainTranslator]: Completed translation [2020-08-22 16:18:48,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:18:48 WrapperNode [2020-08-22 16:18:48,838 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 16:18:48,839 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 16:18:48,839 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 16:18:48,839 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 16:18:48,854 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:18:48" (1/1) ... [2020-08-22 16:18:48,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:18:48" (1/1) ... [2020-08-22 16:18:48,860 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:18:48" (1/1) ... [2020-08-22 16:18:48,860 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:18:48" (1/1) ... [2020-08-22 16:18:48,864 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:18:48" (1/1) ... [2020-08-22 16:18:48,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:18:48" (1/1) ... [2020-08-22 16:18:48,867 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:18:48" (1/1) ... [2020-08-22 16:18:48,869 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 16:18:48,869 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 16:18:48,870 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 16:18:48,870 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 16:18:48,871 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:18:48" (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 [2020-08-22 16:18:49,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 16:18:49,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 16:18:49,036 INFO L138 BoogieDeclarations]: Found implementation of procedure A [2020-08-22 16:18:49,037 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 16:18:49,037 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 16:18:49,037 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 16:18:49,037 INFO L130 BoogieDeclarations]: Found specification of procedure A [2020-08-22 16:18:49,037 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 16:18:49,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 16:18:49,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 16:18:49,205 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 16:18:49,206 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-22 16:18:49,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:18:49 BoogieIcfgContainer [2020-08-22 16:18:49,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 16:18:49,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 16:18:49,215 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 16:18:49,218 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 16:18:49,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:18:48" (1/3) ... [2020-08-22 16:18:49,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63cb2493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:18:49, skipping insertion in model container [2020-08-22 16:18:49,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:18:48" (2/3) ... [2020-08-22 16:18:49,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63cb2493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:18:49, skipping insertion in model container [2020-08-22 16:18:49,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:18:49" (3/3) ... [2020-08-22 16:18:49,222 INFO L109 eAbstractionObserver]: Analyzing ICFG BallRajamani-SPIN2000-Fig1.c [2020-08-22 16:18:49,233 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 16:18:49,240 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 16:18:49,255 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 16:18:49,280 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 16:18:49,280 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 16:18:49,281 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 16:18:49,281 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 16:18:49,281 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 16:18:49,281 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 16:18:49,281 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 16:18:49,281 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 16:18:49,298 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-08-22 16:18:49,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-22 16:18:49,304 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:18:49,305 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:18:49,306 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:18:49,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:18:49,311 INFO L82 PathProgramCache]: Analyzing trace with hash -284235614, now seen corresponding path program 1 times [2020-08-22 16:18:49,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:18:49,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145789628] [2020-08-22 16:18:49,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:18:49,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:49,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:18:49,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:49,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:18:49,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:49,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 16:18:49,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:49,629 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 16:18:49,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145789628] [2020-08-22 16:18:49,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695073611] [2020-08-22 16:18:49,631 INFO L95 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 [2020-08-22 16:18:49,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:49,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjunts are in the unsatisfiable core [2020-08-22 16:18:49,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:18:49,719 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 16:18:49,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:18:49,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 6 [2020-08-22 16:18:49,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898227069] [2020-08-22 16:18:49,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 16:18:49,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:18:49,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 16:18:49,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 16:18:49,745 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 6 states. [2020-08-22 16:18:49,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:18:49,937 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2020-08-22 16:18:49,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 16:18:49,940 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-08-22 16:18:49,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:18:49,950 INFO L225 Difference]: With dead ends: 45 [2020-08-22 16:18:49,951 INFO L226 Difference]: Without dead ends: 21 [2020-08-22 16:18:49,955 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-08-22 16:18:49,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-08-22 16:18:49,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-08-22 16:18:49,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-08-22 16:18:49,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2020-08-22 16:18:49,996 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 20 [2020-08-22 16:18:49,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:18:49,997 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2020-08-22 16:18:49,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 16:18:49,998 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-08-22 16:18:50,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-08-22 16:18:50,000 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:18:50,001 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:18:50,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-08-22 16:18:50,208 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:18:50,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:18:50,209 INFO L82 PathProgramCache]: Analyzing trace with hash -920468714, now seen corresponding path program 1 times [2020-08-22 16:18:50,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:18:50,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309923332] [2020-08-22 16:18:50,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:18:50,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:18:50,251 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:18:50,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:18:50,277 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:18:50,302 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-08-22 16:18:50,302 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 16:18:50,303 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 16:18:50,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:18:50 BoogieIcfgContainer [2020-08-22 16:18:50,330 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 16:18:50,332 INFO L168 Benchmark]: Toolchain (without parser) took 1737.20 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 104.3 MB in the beginning and 121.2 MB in the end (delta: -16.9 MB). Peak memory consumption was 39.7 MB. Max. memory is 7.1 GB. [2020-08-22 16:18:50,333 INFO L168 Benchmark]: CDTParser took 0.60 ms. Allocated memory is still 147.8 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 16:18:50,334 INFO L168 Benchmark]: CACSL2BoogieTranslator took 241.51 ms. Allocated memory is still 147.8 MB. Free memory was 104.1 MB in the beginning and 94.9 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-08-22 16:18:50,336 INFO L168 Benchmark]: Boogie Preprocessor took 30.57 ms. Allocated memory is still 147.8 MB. Free memory was 94.9 MB in the beginning and 93.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-08-22 16:18:50,337 INFO L168 Benchmark]: RCFGBuilder took 344.09 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 93.3 MB in the beginning and 172.5 MB in the end (delta: -79.2 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-08-22 16:18:50,338 INFO L168 Benchmark]: TraceAbstraction took 1115.25 ms. Allocated memory is still 204.5 MB. Free memory was 171.8 MB in the beginning and 121.2 MB in the end (delta: 50.6 MB). Peak memory consumption was 50.6 MB. Max. memory is 7.1 GB. [2020-08-22 16:18:50,342 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.60 ms. Allocated memory is still 147.8 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 241.51 ms. Allocated memory is still 147.8 MB. Free memory was 104.1 MB in the beginning and 94.9 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.57 ms. Allocated memory is still 147.8 MB. Free memory was 94.9 MB in the beginning and 93.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 344.09 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 93.3 MB in the beginning and 172.5 MB in the end (delta: -79.2 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1115.25 ms. Allocated memory is still 204.5 MB. Free memory was 171.8 MB in the beginning and 121.2 MB in the end (delta: 50.6 MB). Peak memory consumption was 50.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 31]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int g; VAL [\old(g)=4, g=0] [L26] int g = __VERIFIER_nondet_int(); [L27] int h = !g; VAL [\old(g)=0, g=1, g=0, h=0] [L28] CALL A(g,h) VAL [\old(a1)=1, \old(a2)=0, \old(g)=0, g=0] [L17] COND TRUE \read(a1) VAL [\old(a1)=1, \old(a2)=0, \old(g)=0, a1=1, a2=0, g=0] [L18] CALL A(a2,a1) VAL [\old(a1)=0, \old(a2)=1, \old(g)=0, g=0] [L17] COND FALSE !(\read(a1)) [L20] g = a2 VAL [\old(a1)=0, \old(a2)=1, \old(g)=0, a1=0, a2=1, g=1] [L18] RET A(a2,a1) VAL [\old(a1)=1, \old(a2)=0, \old(g)=0, A(a2,a1)=-1, a1=1, a2=0, g=1] [L28] RET A(g,h) VAL [\old(g)=0, A(g,h)=2, g=1, g=1, h=0] [L29] CALL A(g,h) VAL [\old(a1)=1, \old(a2)=0, \old(g)=1, g=1] [L17] COND TRUE \read(a1) VAL [\old(a1)=1, \old(a2)=0, \old(g)=1, a1=1, a2=0, g=1] [L18] CALL A(a2,a1) VAL [\old(a1)=0, \old(a2)=1, \old(g)=1, g=1] [L17] COND FALSE !(\read(a1)) [L20] g = a2 VAL [\old(a1)=0, \old(a2)=1, \old(g)=1, a1=0, a2=1, g=1] [L18] RET A(a2,a1) VAL [\old(a1)=1, \old(a2)=0, \old(g)=1, A(a2,a1)=-2, a1=1, a2=0, g=1] [L29] RET A(g,h) VAL [\old(g)=0, A(g,h)=3, g=1, g=1, h=0] [L30] COND TRUE \read(g) VAL [\old(g)=0, g=1, g=1, h=0] [L31] __VERIFIER_error() VAL [\old(g)=0, g=1, g=1, h=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 4, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 19 SDtfs, 10 SDslu, 54 SDs, 0 SdLazy, 44 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 1368 SizeOfPredicates, 1 NumberOfNonLiveVariables, 66 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 2 InterpolantComputations, 0 PerfectInterpolantSequences, 2/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...