/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/locks/test_locks_14-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-89f541c [2020-08-27 21:50:48,611 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-27 21:50:48,615 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-27 21:50:48,641 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-27 21:50:48,642 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-27 21:50:48,643 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-27 21:50:48,644 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-27 21:50:48,646 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-27 21:50:48,648 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-27 21:50:48,649 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-27 21:50:48,650 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-27 21:50:48,652 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-27 21:50:48,652 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-27 21:50:48,653 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-27 21:50:48,654 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-27 21:50:48,656 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-27 21:50:48,657 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-27 21:50:48,658 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-27 21:50:48,660 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-27 21:50:48,662 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-27 21:50:48,664 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-27 21:50:48,666 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-27 21:50:48,667 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-27 21:50:48,668 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-27 21:50:48,671 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-27 21:50:48,680 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-27 21:50:48,681 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-27 21:50:48,682 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-27 21:50:48,683 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-27 21:50:48,708 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-27 21:50:48,709 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-27 21:50:48,710 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-27 21:50:48,710 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-27 21:50:48,710 INFO L138 SettingsManager]: * Use SBE=true [2020-08-27 21:50:48,711 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-27 21:50:48,711 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-27 21:50:48,711 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-27 21:50:48,711 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-27 21:50:48,711 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-27 21:50:48,712 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-27 21:50:48,712 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-27 21:50:48,712 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-27 21:50:48,712 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-27 21:50:48,712 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-27 21:50:48,712 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-27 21:50:48,713 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-27 21:50:48,713 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-27 21:50:48,713 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-27 21:50:48,713 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-27 21:50:48,714 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-27 21:50:48,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-27 21:50:48,714 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-27 21:50:48,714 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-27 21:50:48,714 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-27 21:50:48,715 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-27 21:50:48,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-27 21:50:48,715 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-27 21:50:48,715 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-27 21:50:48,715 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-08-27 21:50:49,182 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-27 21:50:49,206 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-27 21:50:49,214 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-27 21:50:49,216 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-27 21:50:49,217 INFO L275 PluginConnector]: CDTParser initialized [2020-08-27 21:50:49,218 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_14-2.c [2020-08-27 21:50:49,310 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aa7e0d129/453ae7076d174c21b019aa211d6832d3/FLAG2d144230e [2020-08-27 21:50:49,878 INFO L306 CDTParser]: Found 1 translation units. [2020-08-27 21:50:49,879 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_14-2.c [2020-08-27 21:50:49,892 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aa7e0d129/453ae7076d174c21b019aa211d6832d3/FLAG2d144230e [2020-08-27 21:50:50,188 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aa7e0d129/453ae7076d174c21b019aa211d6832d3 [2020-08-27 21:50:50,205 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-27 21:50:50,208 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-27 21:50:50,210 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-27 21:50:50,210 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-27 21:50:50,215 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-27 21:50:50,216 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:50:50" (1/1) ... [2020-08-27 21:50:50,221 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@194bd3d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:50:50, skipping insertion in model container [2020-08-27 21:50:50,221 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:50:50" (1/1) ... [2020-08-27 21:50:50,231 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-27 21:50:50,262 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-27 21:50:50,487 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:50:50,493 INFO L203 MainTranslator]: Completed pre-run [2020-08-27 21:50:50,531 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:50:50,550 INFO L208 MainTranslator]: Completed translation [2020-08-27 21:50:50,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:50:50 WrapperNode [2020-08-27 21:50:50,551 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-27 21:50:50,552 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-27 21:50:50,552 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-27 21:50:50,552 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-27 21:50:50,648 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:50:50" (1/1) ... [2020-08-27 21:50:50,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:50:50" (1/1) ... [2020-08-27 21:50:50,656 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:50:50" (1/1) ... [2020-08-27 21:50:50,656 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:50:50" (1/1) ... [2020-08-27 21:50:50,664 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:50:50" (1/1) ... [2020-08-27 21:50:50,673 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:50:50" (1/1) ... [2020-08-27 21:50:50,675 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:50:50" (1/1) ... [2020-08-27 21:50:50,679 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-27 21:50:50,679 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-27 21:50:50,679 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-27 21:50:50,680 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-27 21:50:50,681 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:50:50" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-27 21:50:50,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-27 21:50:50,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-27 21:50:50,768 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-27 21:50:50,769 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-27 21:50:50,769 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-27 21:50:50,769 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-27 21:50:50,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-27 21:50:50,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-27 21:50:51,163 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-27 21:50:51,164 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-27 21:50:51,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:50:51 BoogieIcfgContainer [2020-08-27 21:50:51,169 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-27 21:50:51,171 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-27 21:50:51,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-27 21:50:51,175 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-27 21:50:51,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 09:50:50" (1/3) ... [2020-08-27 21:50:51,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47b6a8e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:50:51, skipping insertion in model container [2020-08-27 21:50:51,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:50:50" (2/3) ... [2020-08-27 21:50:51,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47b6a8e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:50:51, skipping insertion in model container [2020-08-27 21:50:51,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:50:51" (3/3) ... [2020-08-27 21:50:51,179 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_14-2.c [2020-08-27 21:50:51,191 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-27 21:50:51,202 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-27 21:50:51,237 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-27 21:50:51,264 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-27 21:50:51,265 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-27 21:50:51,265 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-27 21:50:51,265 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-27 21:50:51,265 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-27 21:50:51,266 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-27 21:50:51,266 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-27 21:50:51,266 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-27 21:50:51,287 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-08-27 21:50:51,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-27 21:50:51,295 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:50:51,296 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:50:51,296 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:50:51,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:50:51,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1694527455, now seen corresponding path program 1 times [2020-08-27 21:50:51,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:50:51,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1257613828] [2020-08-27 21:50:51,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:50:51,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:50:51,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:50:51,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:50:51,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:50:51,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1257613828] [2020-08-27 21:50:51,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:50:51,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-27 21:50:51,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192055660] [2020-08-27 21:50:51,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-27 21:50:51,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:50:51,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-27 21:50:51,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-27 21:50:51,621 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 3 states. [2020-08-27 21:50:51,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:50:51,699 INFO L93 Difference]: Finished difference Result 155 states and 287 transitions. [2020-08-27 21:50:51,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-27 21:50:51,702 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-08-27 21:50:51,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:50:51,719 INFO L225 Difference]: With dead ends: 155 [2020-08-27 21:50:51,719 INFO L226 Difference]: Without dead ends: 96 [2020-08-27 21:50:51,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-27 21:50:51,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-08-27 21:50:51,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2020-08-27 21:50:51,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-08-27 21:50:51,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 174 transitions. [2020-08-27 21:50:51,782 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 174 transitions. Word has length 24 [2020-08-27 21:50:51,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:50:51,782 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 174 transitions. [2020-08-27 21:50:51,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-27 21:50:51,782 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 174 transitions. [2020-08-27 21:50:51,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-27 21:50:51,784 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:50:51,784 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:50:51,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-27 21:50:51,785 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:50:51,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:50:51,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1694520263, now seen corresponding path program 1 times [2020-08-27 21:50:51,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:50:51,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [555272537] [2020-08-27 21:50:51,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:50:51,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:50:51,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:50:51,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:50:51,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:50:51,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [555272537] [2020-08-27 21:50:51,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:50:51,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-27 21:50:51,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716281315] [2020-08-27 21:50:51,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-27 21:50:51,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:50:51,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-27 21:50:51,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-27 21:50:51,887 INFO L87 Difference]: Start difference. First operand 94 states and 174 transitions. Second operand 3 states. [2020-08-27 21:50:51,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:50:51,912 INFO L93 Difference]: Finished difference Result 97 states and 177 transitions. [2020-08-27 21:50:51,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-27 21:50:51,913 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-08-27 21:50:51,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:50:51,915 INFO L225 Difference]: With dead ends: 97 [2020-08-27 21:50:51,915 INFO L226 Difference]: Without dead ends: 95 [2020-08-27 21:50:51,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-27 21:50:51,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-08-27 21:50:51,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-08-27 21:50:51,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-08-27 21:50:51,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 175 transitions. [2020-08-27 21:50:51,931 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 175 transitions. Word has length 24 [2020-08-27 21:50:51,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:50:51,931 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 175 transitions. [2020-08-27 21:50:51,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-27 21:50:51,932 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 175 transitions. [2020-08-27 21:50:51,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-27 21:50:51,933 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:50:51,933 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:50:51,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-27 21:50:51,934 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:50:51,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:50:51,934 INFO L82 PathProgramCache]: Analyzing trace with hash 106179553, now seen corresponding path program 1 times [2020-08-27 21:50:51,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:50:51,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [683828967] [2020-08-27 21:50:51,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:50:51,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:50:52,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:50:52,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:50:52,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:50:52,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [683828967] [2020-08-27 21:50:52,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:50:52,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-27 21:50:52,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562457229] [2020-08-27 21:50:52,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-27 21:50:52,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:50:52,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-27 21:50:52,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-27 21:50:52,070 INFO L87 Difference]: Start difference. First operand 95 states and 175 transitions. Second operand 3 states. [2020-08-27 21:50:52,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:50:52,112 INFO L93 Difference]: Finished difference Result 222 states and 412 transitions. [2020-08-27 21:50:52,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-27 21:50:52,113 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-08-27 21:50:52,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:50:52,115 INFO L225 Difference]: With dead ends: 222 [2020-08-27 21:50:52,115 INFO L226 Difference]: Without dead ends: 132 [2020-08-27 21:50:52,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-27 21:50:52,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-08-27 21:50:52,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2020-08-27 21:50:52,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-08-27 21:50:52,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 237 transitions. [2020-08-27 21:50:52,133 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 237 transitions. Word has length 24 [2020-08-27 21:50:52,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:50:52,133 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 237 transitions. [2020-08-27 21:50:52,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-27 21:50:52,134 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 237 transitions. [2020-08-27 21:50:52,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-27 21:50:52,138 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:50:52,138 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:50:52,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-27 21:50:52,139 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:50:52,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:50:52,139 INFO L82 PathProgramCache]: Analyzing trace with hash 106172361, now seen corresponding path program 1 times [2020-08-27 21:50:52,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:50:52,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1815132423] [2020-08-27 21:50:52,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:50:52,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:50:52,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:50:52,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:50:52,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:50:52,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1815132423] [2020-08-27 21:50:52,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:50:52,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-27 21:50:52,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485476222] [2020-08-27 21:50:52,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-27 21:50:52,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:50:52,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-27 21:50:52,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-27 21:50:52,199 INFO L87 Difference]: Start difference. First operand 130 states and 237 transitions. Second operand 3 states. [2020-08-27 21:50:52,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:50:52,227 INFO L93 Difference]: Finished difference Result 179 states and 322 transitions. [2020-08-27 21:50:52,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-27 21:50:52,228 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-08-27 21:50:52,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:50:52,230 INFO L225 Difference]: With dead ends: 179 [2020-08-27 21:50:52,230 INFO L226 Difference]: Without dead ends: 130 [2020-08-27 21:50:52,231 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-27 21:50:52,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-08-27 21:50:52,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 128. [2020-08-27 21:50:52,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-08-27 21:50:52,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 230 transitions. [2020-08-27 21:50:52,246 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 230 transitions. Word has length 24 [2020-08-27 21:50:52,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:50:52,247 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 230 transitions. [2020-08-27 21:50:52,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-27 21:50:52,247 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 230 transitions. [2020-08-27 21:50:52,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-27 21:50:52,249 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:50:52,249 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:50:52,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-27 21:50:52,249 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:50:52,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:50:52,250 INFO L82 PathProgramCache]: Analyzing trace with hash -914888801, now seen corresponding path program 1 times [2020-08-27 21:50:52,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:50:52,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727759291] [2020-08-27 21:50:52,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:50:52,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-27 21:50:52,281 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-27 21:50:52,285 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-27 21:50:52,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-27 21:50:52,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 09:50:52 BoogieIcfgContainer [2020-08-27 21:50:52,313 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-27 21:50:52,316 INFO L168 Benchmark]: Toolchain (without parser) took 2107.79 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 100.8 MB in the beginning and 96.7 MB in the end (delta: 4.1 MB). Peak memory consumption was 67.5 MB. Max. memory is 7.1 GB. [2020-08-27 21:50:52,317 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-27 21:50:52,318 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.01 ms. Allocated memory is still 138.9 MB. Free memory was 100.6 MB in the beginning and 89.1 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. [2020-08-27 21:50:52,319 INFO L168 Benchmark]: Boogie Preprocessor took 127.37 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 89.1 MB in the beginning and 179.8 MB in the end (delta: -90.7 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-08-27 21:50:52,320 INFO L168 Benchmark]: RCFGBuilder took 490.37 ms. Allocated memory is still 202.4 MB. Free memory was 179.8 MB in the beginning and 157.0 MB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2020-08-27 21:50:52,321 INFO L168 Benchmark]: TraceAbstraction took 1142.27 ms. Allocated memory is still 202.4 MB. Free memory was 156.3 MB in the beginning and 96.7 MB in the end (delta: 59.6 MB). Peak memory consumption was 59.6 MB. Max. memory is 7.1 GB. [2020-08-27 21:50:52,325 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 341.01 ms. Allocated memory is still 138.9 MB. Free memory was 100.6 MB in the beginning and 89.1 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.37 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 89.1 MB in the beginning and 179.8 MB in the end (delta: -90.7 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 490.37 ms. Allocated memory is still 202.4 MB. Free memory was 179.8 MB in the beginning and 157.0 MB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1142.27 ms. Allocated memory is still 202.4 MB. Free memory was 156.3 MB in the beginning and 96.7 MB in the end (delta: 59.6 MB). Peak memory consumption was 59.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 217]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L6] int p1 = __VERIFIER_nondet_int(); [L7] int lk1; [L9] int p2 = __VERIFIER_nondet_int(); [L10] int lk2; [L12] int p3 = __VERIFIER_nondet_int(); [L13] int lk3; [L15] int p4 = __VERIFIER_nondet_int(); [L16] int lk4; [L18] int p5 = __VERIFIER_nondet_int(); [L19] int lk5; [L21] int p6 = __VERIFIER_nondet_int(); [L22] int lk6; [L24] int p7 = __VERIFIER_nondet_int(); [L25] int lk7; [L27] int p8 = __VERIFIER_nondet_int(); [L28] int lk8; [L30] int p9 = __VERIFIER_nondet_int(); [L31] int lk9; [L33] int p10 = __VERIFIER_nondet_int(); [L34] int lk10; [L36] int p11 = __VERIFIER_nondet_int(); [L37] int lk11; [L39] int p12 = __VERIFIER_nondet_int(); [L40] int lk12; [L42] int p13 = __VERIFIER_nondet_int(); [L43] int lk13; [L45] int p14 = __VERIFIER_nondet_int(); [L46] int lk14; [L49] int cond; [L51] COND TRUE 1 [L52] cond = __VERIFIER_nondet_int() [L53] COND FALSE !(cond == 0) [L56] lk1 = 0 [L58] lk2 = 0 [L60] lk3 = 0 [L62] lk4 = 0 [L64] lk5 = 0 [L66] lk6 = 0 [L68] lk7 = 0 [L70] lk8 = 0 [L72] lk9 = 0 [L74] lk10 = 0 [L76] lk11 = 0 [L78] lk12 = 0 [L80] lk13 = 0 [L82] lk14 = 0 [L86] COND FALSE !(p1 != 0) [L90] COND FALSE !(p2 != 0) [L94] COND TRUE p3 != 0 [L95] lk3 = 1 [L98] COND TRUE p4 != 0 [L99] lk4 = 1 [L102] COND TRUE p5 != 0 [L103] lk5 = 1 [L106] COND TRUE p6 != 0 [L107] lk6 = 1 [L110] COND TRUE p7 != 0 [L111] lk7 = 1 [L114] COND FALSE !(p8 != 0) [L118] COND TRUE p9 != 0 [L119] lk9 = 1 [L122] COND TRUE p10 != 0 [L123] lk10 = 1 [L126] COND TRUE p11 != 0 [L127] lk11 = 1 [L130] COND TRUE p12 != 0 [L131] lk12 = 1 [L134] COND TRUE p13 != 0 [L135] lk13 = 1 [L138] COND TRUE p14 != 0 [L139] lk14 = 1 [L144] COND FALSE !(p1 != 0) [L149] COND FALSE !(p2 != 0) [L217] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 56 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 458 SDtfs, 227 SDslu, 301 SDs, 0 SdLazy, 20 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=130occurred 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, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 120 NumberOfCodeBlocks, 120 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 5382 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 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...