/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 true -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 0.1.25-5644d1e-m [2020-08-18 16:17:05,969 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 16:17:05,973 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 16:17:06,017 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 16:17:06,018 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 16:17:06,029 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 16:17:06,030 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 16:17:06,034 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 16:17:06,037 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 16:17:06,040 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 16:17:06,042 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 16:17:06,045 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 16:17:06,045 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 16:17:06,048 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 16:17:06,050 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 16:17:06,052 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 16:17:06,053 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 16:17:06,054 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 16:17:06,057 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 16:17:06,063 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 16:17:06,066 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 16:17:06,067 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 16:17:06,069 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 16:17:06,070 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 16:17:06,075 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 16:17:06,075 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 16:17:06,075 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 16:17:06,078 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 16:17:06,078 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 16:17:06,079 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 16:17:06,079 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 16:17:06,081 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 16:17:06,081 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 16:17:06,083 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 16:17:06,084 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 16:17:06,084 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 16:17:06,085 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 16:17:06,085 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 16:17:06,085 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 16:17:06,086 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 16:17:06,087 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 16:17:06,088 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 [2020-08-18 16:17:06,128 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 16:17:06,129 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 16:17:06,131 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 16:17:06,131 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 16:17:06,131 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 16:17:06,132 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 16:17:06,132 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 16:17:06,132 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 16:17:06,132 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 16:17:06,133 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 16:17:06,134 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 16:17:06,134 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 16:17:06,134 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 16:17:06,134 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 16:17:06,135 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 16:17:06,135 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 16:17:06,135 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 16:17:06,135 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 16:17:06,135 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 16:17:06,136 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 16:17:06,136 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 16:17:06,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:17:06,136 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 16:17:06,137 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 16:17:06,137 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 16:17:06,137 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 16:17:06,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 16:17:06,137 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 16:17:06,137 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 16:17:06,138 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 -> true [2020-08-18 16:17:06,465 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 16:17:06,476 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 16:17:06,480 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 16:17:06,482 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 16:17:06,482 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 16:17:06,483 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_14-2.c [2020-08-18 16:17:06,559 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/430121e08/ac4d02daa8114af9b3d6c190c58ba53d/FLAGa28fe064e [2020-08-18 16:17:07,080 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 16:17:07,081 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_14-2.c [2020-08-18 16:17:07,091 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/430121e08/ac4d02daa8114af9b3d6c190c58ba53d/FLAGa28fe064e [2020-08-18 16:17:07,564 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/430121e08/ac4d02daa8114af9b3d6c190c58ba53d [2020-08-18 16:17:07,575 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 16:17:07,576 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 16:17:07,577 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 16:17:07,578 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 16:17:07,581 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 16:17:07,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:17:07" (1/1) ... [2020-08-18 16:17:07,586 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53d5a492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:17:07, skipping insertion in model container [2020-08-18 16:17:07,586 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:17:07" (1/1) ... [2020-08-18 16:17:07,594 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 16:17:07,617 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 16:17:07,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:17:07,802 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 16:17:07,837 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:17:07,951 INFO L208 MainTranslator]: Completed translation [2020-08-18 16:17:07,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:17:07 WrapperNode [2020-08-18 16:17:07,952 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 16:17:07,953 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 16:17:07,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 16:17:07,953 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 16:17:07,967 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:17:07" (1/1) ... [2020-08-18 16:17:07,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:17:07" (1/1) ... [2020-08-18 16:17:07,976 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:17:07" (1/1) ... [2020-08-18 16:17:07,977 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:17:07" (1/1) ... [2020-08-18 16:17:07,995 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:17:07" (1/1) ... [2020-08-18 16:17:08,007 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:17:07" (1/1) ... [2020-08-18 16:17:08,015 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:17:07" (1/1) ... [2020-08-18 16:17:08,021 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 16:17:08,021 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 16:17:08,022 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 16:17:08,022 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 16:17:08,023 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:17:07" (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 [2020-08-18 16:17:08,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 16:17:08,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 16:17:08,077 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 16:17:08,077 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 16:17:08,077 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 16:17:08,077 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 16:17:08,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 16:17:08,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 16:17:08,439 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 16:17:08,440 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-18 16:17:08,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:17:08 BoogieIcfgContainer [2020-08-18 16:17:08,445 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 16:17:08,457 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 16:17:08,457 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 16:17:08,461 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 16:17:08,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 04:17:07" (1/3) ... [2020-08-18 16:17:08,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4241d951 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:17:08, skipping insertion in model container [2020-08-18 16:17:08,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:17:07" (2/3) ... [2020-08-18 16:17:08,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4241d951 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:17:08, skipping insertion in model container [2020-08-18 16:17:08,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:17:08" (3/3) ... [2020-08-18 16:17:08,464 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_14-2.c [2020-08-18 16:17:08,487 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 16:17:08,503 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 16:17:08,515 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 16:17:08,538 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 16:17:08,539 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 16:17:08,539 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 16:17:08,539 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 16:17:08,539 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 16:17:08,539 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 16:17:08,540 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 16:17:08,540 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 16:17:08,559 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-08-18 16:17:08,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-18 16:17:08,565 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:17:08,566 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] [2020-08-18 16:17:08,566 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:17:08,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:17:08,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1694527455, now seen corresponding path program 1 times [2020-08-18 16:17:08,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:17:08,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079607738] [2020-08-18 16:17:08,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:17:08,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:08,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:17:08,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:08,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:17:08,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079607738] [2020-08-18 16:17:08,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:17:08,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 16:17:08,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64812123] [2020-08-18 16:17:08,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 16:17:08,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:17:08,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 16:17:08,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 16:17:08,818 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 3 states. [2020-08-18 16:17:08,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:17:08,893 INFO L93 Difference]: Finished difference Result 155 states and 287 transitions. [2020-08-18 16:17:08,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 16:17:08,895 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-08-18 16:17:08,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:17:08,907 INFO L225 Difference]: With dead ends: 155 [2020-08-18 16:17:08,907 INFO L226 Difference]: Without dead ends: 96 [2020-08-18 16:17:08,911 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 [2020-08-18 16:17:08,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-08-18 16:17:08,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2020-08-18 16:17:08,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-08-18 16:17:08,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 174 transitions. [2020-08-18 16:17:08,958 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 174 transitions. Word has length 24 [2020-08-18 16:17:08,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:17:08,958 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 174 transitions. [2020-08-18 16:17:08,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 16:17:08,959 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 174 transitions. [2020-08-18 16:17:08,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-18 16:17:08,960 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:17:08,960 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] [2020-08-18 16:17:08,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 16:17:08,961 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:17:08,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:17:08,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1694520263, now seen corresponding path program 1 times [2020-08-18 16:17:08,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:17:08,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908589499] [2020-08-18 16:17:08,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:17:08,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:09,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:17:09,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:09,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:17:09,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908589499] [2020-08-18 16:17:09,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:17:09,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 16:17:09,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758938922] [2020-08-18 16:17:09,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 16:17:09,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:17:09,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 16:17:09,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 16:17:09,080 INFO L87 Difference]: Start difference. First operand 94 states and 174 transitions. Second operand 3 states. [2020-08-18 16:17:09,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:17:09,112 INFO L93 Difference]: Finished difference Result 97 states and 177 transitions. [2020-08-18 16:17:09,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 16:17:09,113 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-08-18 16:17:09,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:17:09,115 INFO L225 Difference]: With dead ends: 97 [2020-08-18 16:17:09,115 INFO L226 Difference]: Without dead ends: 95 [2020-08-18 16:17:09,116 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 [2020-08-18 16:17:09,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-08-18 16:17:09,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-08-18 16:17:09,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-08-18 16:17:09,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 175 transitions. [2020-08-18 16:17:09,129 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 175 transitions. Word has length 24 [2020-08-18 16:17:09,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:17:09,129 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 175 transitions. [2020-08-18 16:17:09,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 16:17:09,130 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 175 transitions. [2020-08-18 16:17:09,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-18 16:17:09,131 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:17:09,131 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] [2020-08-18 16:17:09,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 16:17:09,132 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:17:09,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:17:09,132 INFO L82 PathProgramCache]: Analyzing trace with hash 106179553, now seen corresponding path program 1 times [2020-08-18 16:17:09,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:17:09,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1177961064] [2020-08-18 16:17:09,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:17:09,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:09,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:17:09,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:09,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:17:09,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1177961064] [2020-08-18 16:17:09,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:17:09,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 16:17:09,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809813647] [2020-08-18 16:17:09,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 16:17:09,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:17:09,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 16:17:09,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 16:17:09,189 INFO L87 Difference]: Start difference. First operand 95 states and 175 transitions. Second operand 3 states. [2020-08-18 16:17:09,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:17:09,214 INFO L93 Difference]: Finished difference Result 222 states and 412 transitions. [2020-08-18 16:17:09,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 16:17:09,214 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-08-18 16:17:09,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:17:09,216 INFO L225 Difference]: With dead ends: 222 [2020-08-18 16:17:09,216 INFO L226 Difference]: Without dead ends: 132 [2020-08-18 16:17:09,217 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 [2020-08-18 16:17:09,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-08-18 16:17:09,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2020-08-18 16:17:09,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-08-18 16:17:09,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 237 transitions. [2020-08-18 16:17:09,234 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 237 transitions. Word has length 24 [2020-08-18 16:17:09,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:17:09,235 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 237 transitions. [2020-08-18 16:17:09,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 16:17:09,235 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 237 transitions. [2020-08-18 16:17:09,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-18 16:17:09,237 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:17:09,237 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] [2020-08-18 16:17:09,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 16:17:09,237 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:17:09,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:17:09,238 INFO L82 PathProgramCache]: Analyzing trace with hash 106172361, now seen corresponding path program 1 times [2020-08-18 16:17:09,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:17:09,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1690807154] [2020-08-18 16:17:09,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:17:09,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:09,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:17:09,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:09,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 16:17:09,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1690807154] [2020-08-18 16:17:09,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:17:09,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 16:17:09,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909731833] [2020-08-18 16:17:09,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 16:17:09,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:17:09,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 16:17:09,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 16:17:09,313 INFO L87 Difference]: Start difference. First operand 130 states and 237 transitions. Second operand 3 states. [2020-08-18 16:17:09,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:17:09,345 INFO L93 Difference]: Finished difference Result 179 states and 322 transitions. [2020-08-18 16:17:09,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 16:17:09,346 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-08-18 16:17:09,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:17:09,348 INFO L225 Difference]: With dead ends: 179 [2020-08-18 16:17:09,348 INFO L226 Difference]: Without dead ends: 130 [2020-08-18 16:17:09,349 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 [2020-08-18 16:17:09,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-08-18 16:17:09,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 128. [2020-08-18 16:17:09,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-08-18 16:17:09,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 230 transitions. [2020-08-18 16:17:09,363 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 230 transitions. Word has length 24 [2020-08-18 16:17:09,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:17:09,363 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 230 transitions. [2020-08-18 16:17:09,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 16:17:09,364 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 230 transitions. [2020-08-18 16:17:09,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-18 16:17:09,365 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:17:09,365 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] [2020-08-18 16:17:09,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 16:17:09,366 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:17:09,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:17:09,366 INFO L82 PathProgramCache]: Analyzing trace with hash -914888801, now seen corresponding path program 1 times [2020-08-18 16:17:09,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:17:09,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [241375401] [2020-08-18 16:17:09,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:17:09,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 16:17:09,393 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 16:17:09,394 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 16:17:09,398 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 16:17:09,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 04:17:09 BoogieIcfgContainer [2020-08-18 16:17:09,429 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 16:17:09,431 INFO L168 Benchmark]: Toolchain (without parser) took 1854.59 ms. Allocated memory was 144.2 MB in the beginning and 230.2 MB in the end (delta: 86.0 MB). Free memory was 105.3 MB in the beginning and 200.4 MB in the end (delta: -95.2 MB). Peak memory consumption was 74.8 MB. Max. memory is 7.1 GB. [2020-08-18 16:17:09,432 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 144.2 MB. Free memory was 124.6 MB in the beginning and 124.2 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. [2020-08-18 16:17:09,433 INFO L168 Benchmark]: CACSL2BoogieTranslator took 374.93 ms. Allocated memory was 144.2 MB in the beginning and 205.5 MB in the end (delta: 61.3 MB). Free memory was 105.3 MB in the beginning and 183.8 MB in the end (delta: -78.6 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-08-18 16:17:09,434 INFO L168 Benchmark]: Boogie Preprocessor took 68.38 ms. Allocated memory is still 205.5 MB. Free memory was 183.8 MB in the beginning and 182.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2020-08-18 16:17:09,435 INFO L168 Benchmark]: RCFGBuilder took 423.82 ms. Allocated memory is still 205.5 MB. Free memory was 182.0 MB in the beginning and 159.1 MB in the end (delta: 22.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2020-08-18 16:17:09,436 INFO L168 Benchmark]: TraceAbstraction took 971.68 ms. Allocated memory was 205.5 MB in the beginning and 230.2 MB in the end (delta: 24.6 MB). Free memory was 158.2 MB in the beginning and 200.4 MB in the end (delta: -42.2 MB). Peak memory consumption was 66.4 MB. Max. memory is 7.1 GB. [2020-08-18 16:17:09,440 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 144.2 MB. Free memory was 124.6 MB in the beginning and 124.2 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 374.93 ms. Allocated memory was 144.2 MB in the beginning and 205.5 MB in the end (delta: 61.3 MB). Free memory was 105.3 MB in the beginning and 183.8 MB in the end (delta: -78.6 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 68.38 ms. Allocated memory is still 205.5 MB. Free memory was 183.8 MB in the beginning and 182.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 423.82 ms. Allocated memory is still 205.5 MB. Free memory was 182.0 MB in the beginning and 159.1 MB in the end (delta: 22.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 971.68 ms. Allocated memory was 205.5 MB in the beginning and 230.2 MB in the end (delta: 24.6 MB). Free memory was 158.2 MB in the beginning and 200.4 MB in the end (delta: -42.2 MB). Peak memory consumption was 66.4 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: 0.8s, 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...