/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-eb0fd7c [2020-09-21 10:20:35,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:20:35,712 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:20:35,759 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:20:35,759 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:20:35,769 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:20:35,772 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:20:35,777 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:20:35,780 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:20:35,783 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:20:35,784 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:20:35,785 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:20:35,786 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:20:35,789 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:20:35,792 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:20:35,794 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:20:35,795 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:20:35,797 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:20:35,799 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:20:35,808 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:20:35,811 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:20:35,812 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:20:35,813 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:20:35,814 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:20:35,817 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-21 10:20:35,828 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:20:35,829 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:20:35,831 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:20:35,832 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 [2020-09-21 10:20:35,878 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:20:35,879 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:20:35,881 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:20:35,881 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:20:35,881 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:20:35,881 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:20:35,882 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:20:35,882 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:20:35,882 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:20:35,882 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:20:35,883 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:20:35,884 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:20:35,884 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:20:35,884 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:20:35,885 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:20:35,885 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:20:35,885 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:20:35,885 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:20:35,885 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:20:35,886 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:20:35,886 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:20:35,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:20:35,886 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:20:35,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:20:35,887 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:20:35,887 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:20:35,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:20:35,887 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:20:35,887 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:20:35,888 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 [2020-09-21 10:20:36,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:20:36,355 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:20:36,359 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:20:36,362 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:20:36,362 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:20:36,364 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_14-2.c [2020-09-21 10:20:36,458 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f7a3740ae/51a87dda11464e07a563625119cca6c1/FLAGf541765c3 [2020-09-21 10:20:36,995 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:20:36,996 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_14-2.c [2020-09-21 10:20:37,007 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f7a3740ae/51a87dda11464e07a563625119cca6c1/FLAGf541765c3 [2020-09-21 10:20:37,311 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f7a3740ae/51a87dda11464e07a563625119cca6c1 [2020-09-21 10:20:37,327 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:20:37,333 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:20:37,334 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:20:37,334 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:20:37,339 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:20:37,340 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:20:37" (1/1) ... [2020-09-21 10:20:37,344 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f78b0b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:20:37, skipping insertion in model container [2020-09-21 10:20:37,345 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:20:37" (1/1) ... [2020-09-21 10:20:37,354 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:20:37,404 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:20:37,641 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:20:37,648 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:20:37,690 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:20:37,708 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:20:37,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:20:37 WrapperNode [2020-09-21 10:20:37,709 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:20:37,710 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:20:37,710 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:20:37,710 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:20:37,802 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:20:37" (1/1) ... [2020-09-21 10:20:37,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:20:37" (1/1) ... [2020-09-21 10:20:37,810 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:20:37" (1/1) ... [2020-09-21 10:20:37,810 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:20:37" (1/1) ... [2020-09-21 10:20:37,818 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:20:37" (1/1) ... [2020-09-21 10:20:37,829 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:20:37" (1/1) ... [2020-09-21 10:20:37,831 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:20:37" (1/1) ... [2020-09-21 10:20:37,835 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:20:37,835 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:20:37,835 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:20:37,836 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:20:37,837 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:20:37" (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 [2020-09-21 10:20:37,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:20:37,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:20:37,913 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:20:37,914 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:20:37,914 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 10:20:37,914 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:20:37,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:20:37,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:20:38,330 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:20:38,330 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-21 10:20:38,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:20:38 BoogieIcfgContainer [2020-09-21 10:20:38,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:20:38,337 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:20:38,337 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:20:38,341 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:20:38,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:20:37" (1/3) ... [2020-09-21 10:20:38,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@341c7c07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:20:38, skipping insertion in model container [2020-09-21 10:20:38,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:20:37" (2/3) ... [2020-09-21 10:20:38,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@341c7c07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:20:38, skipping insertion in model container [2020-09-21 10:20:38,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:20:38" (3/3) ... [2020-09-21 10:20:38,346 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_14-2.c [2020-09-21 10:20:38,355 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:20:38,366 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 10:20:38,388 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 10:20:38,419 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:20:38,419 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:20:38,419 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:20:38,419 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:20:38,419 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:20:38,419 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:20:38,420 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:20:38,420 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:20:38,442 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-09-21 10:20:38,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-21 10:20:38,450 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:20:38,451 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] [2020-09-21 10:20:38,451 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:20:38,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:20:38,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1694527455, now seen corresponding path program 1 times [2020-09-21 10:20:38,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:20:38,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429089342] [2020-09-21 10:20:38,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:20:38,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:38,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:20:38,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:38,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:20:38,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429089342] [2020-09-21 10:20:38,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:20:38,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 10:20:38,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007200094] [2020-09-21 10:20:38,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 10:20:38,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:20:38,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 10:20:38,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 10:20:38,795 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 3 states. [2020-09-21 10:20:38,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:20:38,903 INFO L93 Difference]: Finished difference Result 155 states and 287 transitions. [2020-09-21 10:20:38,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 10:20:38,905 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-09-21 10:20:38,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:20:38,921 INFO L225 Difference]: With dead ends: 155 [2020-09-21 10:20:38,921 INFO L226 Difference]: Without dead ends: 96 [2020-09-21 10:20:38,927 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 [2020-09-21 10:20:38,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-21 10:20:38,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2020-09-21 10:20:38,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-09-21 10:20:38,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 174 transitions. [2020-09-21 10:20:38,989 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 174 transitions. Word has length 24 [2020-09-21 10:20:38,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:20:38,990 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 174 transitions. [2020-09-21 10:20:38,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 10:20:38,990 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 174 transitions. [2020-09-21 10:20:38,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-21 10:20:38,991 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:20:38,992 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] [2020-09-21 10:20:38,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:20:38,992 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:20:38,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:20:38,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1694520263, now seen corresponding path program 1 times [2020-09-21 10:20:38,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:20:38,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067696113] [2020-09-21 10:20:38,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:20:39,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:39,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:20:39,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:39,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:20:39,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067696113] [2020-09-21 10:20:39,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:20:39,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 10:20:39,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513957073] [2020-09-21 10:20:39,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 10:20:39,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:20:39,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 10:20:39,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 10:20:39,113 INFO L87 Difference]: Start difference. First operand 94 states and 174 transitions. Second operand 3 states. [2020-09-21 10:20:39,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:20:39,136 INFO L93 Difference]: Finished difference Result 97 states and 177 transitions. [2020-09-21 10:20:39,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 10:20:39,137 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-09-21 10:20:39,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:20:39,139 INFO L225 Difference]: With dead ends: 97 [2020-09-21 10:20:39,139 INFO L226 Difference]: Without dead ends: 95 [2020-09-21 10:20:39,140 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 [2020-09-21 10:20:39,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-09-21 10:20:39,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-09-21 10:20:39,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-09-21 10:20:39,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 175 transitions. [2020-09-21 10:20:39,154 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 175 transitions. Word has length 24 [2020-09-21 10:20:39,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:20:39,154 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 175 transitions. [2020-09-21 10:20:39,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 10:20:39,155 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 175 transitions. [2020-09-21 10:20:39,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-21 10:20:39,156 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:20:39,156 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] [2020-09-21 10:20:39,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 10:20:39,157 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:20:39,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:20:39,157 INFO L82 PathProgramCache]: Analyzing trace with hash 106179553, now seen corresponding path program 1 times [2020-09-21 10:20:39,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:20:39,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1101903860] [2020-09-21 10:20:39,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:20:39,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:39,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:20:39,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:39,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:20:39,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1101903860] [2020-09-21 10:20:39,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:20:39,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 10:20:39,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757227185] [2020-09-21 10:20:39,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 10:20:39,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:20:39,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 10:20:39,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 10:20:39,230 INFO L87 Difference]: Start difference. First operand 95 states and 175 transitions. Second operand 3 states. [2020-09-21 10:20:39,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:20:39,263 INFO L93 Difference]: Finished difference Result 222 states and 412 transitions. [2020-09-21 10:20:39,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 10:20:39,263 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-09-21 10:20:39,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:20:39,265 INFO L225 Difference]: With dead ends: 222 [2020-09-21 10:20:39,265 INFO L226 Difference]: Without dead ends: 132 [2020-09-21 10:20:39,267 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 [2020-09-21 10:20:39,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-09-21 10:20:39,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2020-09-21 10:20:39,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-09-21 10:20:39,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 237 transitions. [2020-09-21 10:20:39,282 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 237 transitions. Word has length 24 [2020-09-21 10:20:39,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:20:39,282 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 237 transitions. [2020-09-21 10:20:39,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 10:20:39,283 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 237 transitions. [2020-09-21 10:20:39,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-21 10:20:39,284 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:20:39,284 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] [2020-09-21 10:20:39,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 10:20:39,285 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:20:39,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:20:39,285 INFO L82 PathProgramCache]: Analyzing trace with hash 106172361, now seen corresponding path program 1 times [2020-09-21 10:20:39,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:20:39,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1597027622] [2020-09-21 10:20:39,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:20:39,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:39,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:20:39,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:39,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:20:39,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1597027622] [2020-09-21 10:20:39,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:20:39,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 10:20:39,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348522489] [2020-09-21 10:20:39,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 10:20:39,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:20:39,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 10:20:39,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 10:20:39,370 INFO L87 Difference]: Start difference. First operand 130 states and 237 transitions. Second operand 3 states. [2020-09-21 10:20:39,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:20:39,396 INFO L93 Difference]: Finished difference Result 179 states and 322 transitions. [2020-09-21 10:20:39,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 10:20:39,397 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-09-21 10:20:39,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:20:39,399 INFO L225 Difference]: With dead ends: 179 [2020-09-21 10:20:39,399 INFO L226 Difference]: Without dead ends: 130 [2020-09-21 10:20:39,400 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 [2020-09-21 10:20:39,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-09-21 10:20:39,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 128. [2020-09-21 10:20:39,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-09-21 10:20:39,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 230 transitions. [2020-09-21 10:20:39,414 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 230 transitions. Word has length 24 [2020-09-21 10:20:39,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:20:39,415 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 230 transitions. [2020-09-21 10:20:39,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 10:20:39,415 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 230 transitions. [2020-09-21 10:20:39,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-21 10:20:39,417 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:20:39,417 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] [2020-09-21 10:20:39,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 10:20:39,418 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:20:39,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:20:39,418 INFO L82 PathProgramCache]: Analyzing trace with hash -914888801, now seen corresponding path program 1 times [2020-09-21 10:20:39,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:20:39,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [325742735] [2020-09-21 10:20:39,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:20:39,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 10:20:39,448 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 10:20:39,449 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 10:20:39,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 10:20:39,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 10:20:39 BoogieIcfgContainer [2020-09-21 10:20:39,476 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 10:20:39,479 INFO L168 Benchmark]: Toolchain (without parser) took 2149.78 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 103.0 MB in the beginning and 97.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 68.3 MB. Max. memory is 7.1 GB. [2020-09-21 10:20:39,480 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-21 10:20:39,482 INFO L168 Benchmark]: CACSL2BoogieTranslator took 375.81 ms. Allocated memory is still 139.5 MB. Free memory was 102.4 MB in the beginning and 91.0 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. [2020-09-21 10:20:39,485 INFO L168 Benchmark]: Boogie Preprocessor took 124.92 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 91.0 MB in the beginning and 179.8 MB in the end (delta: -88.8 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-09-21 10:20:39,486 INFO L168 Benchmark]: RCFGBuilder took 500.67 ms. Allocated memory is still 202.4 MB. Free memory was 179.8 MB in the beginning and 156.6 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2020-09-21 10:20:39,487 INFO L168 Benchmark]: TraceAbstraction took 1139.04 ms. Allocated memory is still 202.4 MB. Free memory was 155.9 MB in the beginning and 97.6 MB in the end (delta: 58.3 MB). Peak memory consumption was 58.3 MB. Max. memory is 7.1 GB. [2020-09-21 10:20:39,495 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 375.81 ms. Allocated memory is still 139.5 MB. Free memory was 102.4 MB in the beginning and 91.0 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.92 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 91.0 MB in the beginning and 179.8 MB in the end (delta: -88.8 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 500.67 ms. Allocated memory is still 202.4 MB. Free memory was 179.8 MB in the beginning and 156.6 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1139.04 ms. Allocated memory is still 202.4 MB. Free memory was 155.9 MB in the beginning and 97.6 MB in the end (delta: 58.3 MB). Peak memory consumption was 58.3 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...