/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_15-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 16:17:06,225 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 16:17:06,228 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 16:17:06,270 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 16:17:06,270 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 16:17:06,278 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 16:17:06,282 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 16:17:06,285 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 16:17:06,288 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 16:17:06,291 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 16:17:06,292 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 16:17:06,293 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 16:17:06,293 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 16:17:06,296 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 16:17:06,298 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 16:17:06,300 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 16:17:06,301 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 16:17:06,302 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 16:17:06,304 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 16:17:06,313 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 16:17:06,316 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 16:17:06,317 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 16:17:06,318 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 16:17:06,318 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 16:17:06,330 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 16:17:06,340 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 16:17:06,341 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 16:17:06,342 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 16:17:06,343 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 16:17:06,385 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 16:17:06,386 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 16:17:06,388 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 16:17:06,388 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 16:17:06,389 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 16:17:06,389 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 16:17:06,389 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 16:17:06,389 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 16:17:06,390 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 16:17:06,390 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 16:17:06,391 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 16:17:06,391 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 16:17:06,391 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 16:17:06,392 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 16:17:06,392 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 16:17:06,392 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 16:17:06,392 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 16:17:06,392 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 16:17:06,393 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 16:17:06,393 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 16:17:06,393 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 16:17:06,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:17:06,393 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 16:17:06,394 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 16:17:06,394 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 16:17:06,394 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 16:17:06,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 16:17:06,394 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 16:17:06,394 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 16:17:06,395 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 16:17:06,721 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 16:17:06,738 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 16:17:06,741 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 16:17:06,742 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 16:17:06,742 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 16:17:06,743 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_15-1.c [2020-08-18 16:17:06,810 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19d0a71de/e12f68327cc841b89365f72b3510ba8f/FLAG1d555d796 [2020-08-18 16:17:07,308 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 16:17:07,309 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_15-1.c [2020-08-18 16:17:07,319 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19d0a71de/e12f68327cc841b89365f72b3510ba8f/FLAG1d555d796 [2020-08-18 16:17:07,656 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19d0a71de/e12f68327cc841b89365f72b3510ba8f [2020-08-18 16:17:07,665 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 16:17:07,667 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 16:17:07,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 16:17:07,668 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 16:17:07,674 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 16:17:07,675 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:17:07" (1/1) ... [2020-08-18 16:17:07,677 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d72532b 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 16:17:07,678 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:17:07" (1/1) ... [2020-08-18 16:17:07,686 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 16:17:07,720 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 16:17:07,907 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:17:07,911 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 16:17:07,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:17:07,957 INFO L208 MainTranslator]: Completed translation [2020-08-18 16:17:07,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:17:07 WrapperNode [2020-08-18 16:17:07,958 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 16:17:07,958 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 16:17:07,958 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 16:17:07,959 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 16:17:08,049 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 16:17:08,049 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 16:17:08,055 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 16:17:08,055 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 16:17:08,062 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 16:17:08,071 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 16:17:08,073 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 16:17:08,076 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 16:17:08,076 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 16:17:08,077 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 16:17:08,077 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 16:17:08,078 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 16:17:08,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 16:17:08,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 16:17:08,144 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 16:17:08,145 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 16:17:08,145 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 16:17:08,145 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 16:17:08,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 16:17:08,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 16:17:08,539 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 16:17:08,539 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-18 16:17:08,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:17:08 BoogieIcfgContainer [2020-08-18 16:17:08,544 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 16:17:08,545 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 16:17:08,545 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 16:17:08,548 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 16:17:08,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 04:17:07" (1/3) ... [2020-08-18 16:17:08,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16d833c7 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 16:17:08,550 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 16:17:08,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16d833c7 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 16:17:08,550 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 16:17:08,552 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_15-1.c [2020-08-18 16:17:08,562 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 16:17:08,569 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 16:17:08,583 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 16:17:08,608 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 16:17:08,609 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 16:17:08,609 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 16:17:08,609 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 16:17:08,609 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 16:17:08,609 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 16:17:08,610 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 16:17:08,610 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 16:17:08,628 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2020-08-18 16:17:08,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-18 16:17:08,635 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:17:08,636 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, 1] [2020-08-18 16:17:08,636 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:17:08,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:17:08,641 INFO L82 PathProgramCache]: Analyzing trace with hash -563352914, now seen corresponding path program 1 times [2020-08-18 16:17:08,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:17:08,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1653780667] [2020-08-18 16:17:08,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:17:08,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:08,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:17:08,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:08,872 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 16:17:08,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1653780667] [2020-08-18 16:17:08,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:17:08,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 16:17:08,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793970209] [2020-08-18 16:17:08,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 16:17:08,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:17:08,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 16:17:08,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 16:17:08,900 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 3 states. [2020-08-18 16:17:08,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:17:08,984 INFO L93 Difference]: Finished difference Result 164 states and 305 transitions. [2020-08-18 16:17:08,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 16:17:08,986 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-08-18 16:17:08,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:17:08,999 INFO L225 Difference]: With dead ends: 164 [2020-08-18 16:17:09,000 INFO L226 Difference]: Without dead ends: 102 [2020-08-18 16:17:09,004 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 16:17:09,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-08-18 16:17:09,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2020-08-18 16:17:09,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-18 16:17:09,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 186 transitions. [2020-08-18 16:17:09,057 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 186 transitions. Word has length 25 [2020-08-18 16:17:09,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:17:09,057 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 186 transitions. [2020-08-18 16:17:09,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 16:17:09,058 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 186 transitions. [2020-08-18 16:17:09,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-18 16:17:09,059 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:17:09,059 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, 1] [2020-08-18 16:17:09,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 16:17:09,060 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:17:09,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:17:09,061 INFO L82 PathProgramCache]: Analyzing trace with hash -563360106, now seen corresponding path program 1 times [2020-08-18 16:17:09,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:17:09,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [787561845] [2020-08-18 16:17:09,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:17:09,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:09,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:17:09,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:09,165 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 16:17:09,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [787561845] [2020-08-18 16:17:09,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:17:09,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 16:17:09,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560066323] [2020-08-18 16:17:09,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 16:17:09,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:17:09,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 16:17:09,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 16:17:09,170 INFO L87 Difference]: Start difference. First operand 100 states and 186 transitions. Second operand 3 states. [2020-08-18 16:17:09,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:17:09,194 INFO L93 Difference]: Finished difference Result 103 states and 189 transitions. [2020-08-18 16:17:09,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 16:17:09,195 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-08-18 16:17:09,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:17:09,197 INFO L225 Difference]: With dead ends: 103 [2020-08-18 16:17:09,198 INFO L226 Difference]: Without dead ends: 101 [2020-08-18 16:17:09,201 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 16:17:09,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-08-18 16:17:09,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2020-08-18 16:17:09,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-08-18 16:17:09,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 187 transitions. [2020-08-18 16:17:09,220 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 187 transitions. Word has length 25 [2020-08-18 16:17:09,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:17:09,220 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 187 transitions. [2020-08-18 16:17:09,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 16:17:09,223 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 187 transitions. [2020-08-18 16:17:09,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-18 16:17:09,224 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:17:09,224 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, 1] [2020-08-18 16:17:09,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 16:17:09,225 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:17:09,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:17:09,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1737469676, now seen corresponding path program 1 times [2020-08-18 16:17:09,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:17:09,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1038239004] [2020-08-18 16:17:09,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:17:09,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:09,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:17:09,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:09,330 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 16:17:09,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1038239004] [2020-08-18 16:17:09,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:17:09,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 16:17:09,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963609576] [2020-08-18 16:17:09,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 16:17:09,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:17:09,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 16:17:09,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 16:17:09,333 INFO L87 Difference]: Start difference. First operand 101 states and 187 transitions. Second operand 3 states. [2020-08-18 16:17:09,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:17:09,358 INFO L93 Difference]: Finished difference Result 236 states and 440 transitions. [2020-08-18 16:17:09,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 16:17:09,359 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-08-18 16:17:09,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:17:09,361 INFO L225 Difference]: With dead ends: 236 [2020-08-18 16:17:09,361 INFO L226 Difference]: Without dead ends: 140 [2020-08-18 16:17:09,363 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 16:17:09,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-08-18 16:17:09,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 138. [2020-08-18 16:17:09,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-18 16:17:09,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 253 transitions. [2020-08-18 16:17:09,376 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 253 transitions. Word has length 25 [2020-08-18 16:17:09,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:17:09,377 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 253 transitions. [2020-08-18 16:17:09,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 16:17:09,377 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 253 transitions. [2020-08-18 16:17:09,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-18 16:17:09,379 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:17:09,379 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, 1] [2020-08-18 16:17:09,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 16:17:09,380 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:17:09,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:17:09,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1737462484, now seen corresponding path program 1 times [2020-08-18 16:17:09,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:17:09,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [511503045] [2020-08-18 16:17:09,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:17:09,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:09,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:17:09,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:09,435 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 16:17:09,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [511503045] [2020-08-18 16:17:09,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:17:09,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 16:17:09,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037124] [2020-08-18 16:17:09,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 16:17:09,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:17:09,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 16:17:09,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 16:17:09,438 INFO L87 Difference]: Start difference. First operand 138 states and 253 transitions. Second operand 3 states. [2020-08-18 16:17:09,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:17:09,471 INFO L93 Difference]: Finished difference Result 190 states and 344 transitions. [2020-08-18 16:17:09,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 16:17:09,472 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-08-18 16:17:09,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:17:09,474 INFO L225 Difference]: With dead ends: 190 [2020-08-18 16:17:09,474 INFO L226 Difference]: Without dead ends: 138 [2020-08-18 16:17:09,475 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 16:17:09,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-08-18 16:17:09,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 136. [2020-08-18 16:17:09,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-08-18 16:17:09,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 246 transitions. [2020-08-18 16:17:09,492 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 246 transitions. Word has length 25 [2020-08-18 16:17:09,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:17:09,492 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 246 transitions. [2020-08-18 16:17:09,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 16:17:09,493 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 246 transitions. [2020-08-18 16:17:09,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-18 16:17:09,495 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:17:09,495 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, 1] [2020-08-18 16:17:09,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 16:17:09,495 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:17:09,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:17:09,497 INFO L82 PathProgramCache]: Analyzing trace with hash 149121774, now seen corresponding path program 1 times [2020-08-18 16:17:09,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:17:09,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2126348303] [2020-08-18 16:17:09,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:17:09,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 16:17:09,532 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 16:17:09,532 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 16:17:09,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 16:17:09,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 04:17:09 BoogieIcfgContainer [2020-08-18 16:17:09,557 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 16:17:09,560 INFO L168 Benchmark]: Toolchain (without parser) took 1892.68 ms. Allocated memory was 140.5 MB in the beginning and 201.9 MB in the end (delta: 61.3 MB). Free memory was 102.4 MB in the beginning and 92.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 71.1 MB. Max. memory is 7.1 GB. [2020-08-18 16:17:09,561 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 16:17:09,562 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.91 ms. Allocated memory is still 140.5 MB. Free memory was 102.2 MB in the beginning and 90.6 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. [2020-08-18 16:17:09,563 INFO L168 Benchmark]: Boogie Preprocessor took 117.80 ms. Allocated memory was 140.5 MB in the beginning and 201.9 MB in the end (delta: 61.3 MB). Free memory was 90.6 MB in the beginning and 179.4 MB in the end (delta: -88.8 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-08-18 16:17:09,564 INFO L168 Benchmark]: RCFGBuilder took 467.34 ms. Allocated memory is still 201.9 MB. Free memory was 179.4 MB in the beginning and 155.1 MB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-08-18 16:17:09,565 INFO L168 Benchmark]: TraceAbstraction took 1012.46 ms. Allocated memory is still 201.9 MB. Free memory was 155.1 MB in the beginning and 92.6 MB in the end (delta: 62.5 MB). Peak memory consumption was 62.5 MB. Max. memory is 7.1 GB. [2020-08-18 16:17:09,569 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 289.91 ms. Allocated memory is still 140.5 MB. Free memory was 102.2 MB in the beginning and 90.6 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.80 ms. Allocated memory was 140.5 MB in the beginning and 201.9 MB in the end (delta: 61.3 MB). Free memory was 90.6 MB in the beginning and 179.4 MB in the end (delta: -88.8 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 467.34 ms. Allocated memory is still 201.9 MB. Free memory was 179.4 MB in the beginning and 155.1 MB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1012.46 ms. Allocated memory is still 201.9 MB. Free memory was 155.1 MB in the beginning and 92.6 MB in the end (delta: 62.5 MB). Peak memory consumption was 62.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 231]: 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; [L48] int p15 = __VERIFIER_nondet_int(); [L49] int lk15; [L52] int cond; [L54] COND TRUE 1 [L55] cond = __VERIFIER_nondet_int() [L56] COND FALSE !(cond == 0) [L59] lk1 = 0 [L61] lk2 = 0 [L63] lk3 = 0 [L65] lk4 = 0 [L67] lk5 = 0 [L69] lk6 = 0 [L71] lk7 = 0 [L73] lk8 = 0 [L75] lk9 = 0 [L77] lk10 = 0 [L79] lk11 = 0 [L81] lk12 = 0 [L83] lk13 = 0 [L85] lk14 = 0 [L87] lk15 = 0 [L91] COND FALSE !(p1 != 0) [L95] COND FALSE !(p2 != 0) [L99] COND TRUE p3 != 0 [L100] lk3 = 1 [L103] COND TRUE p4 != 0 [L104] lk4 = 1 [L107] COND TRUE p5 != 0 [L108] lk5 = 1 [L111] COND TRUE p6 != 0 [L112] lk6 = 1 [L115] COND TRUE p7 != 0 [L116] lk7 = 1 [L119] COND FALSE !(p8 != 0) [L123] COND TRUE p9 != 0 [L124] lk9 = 1 [L127] COND TRUE p10 != 0 [L128] lk10 = 1 [L131] COND TRUE p11 != 0 [L132] lk11 = 1 [L135] COND TRUE p12 != 0 [L136] lk12 = 1 [L139] COND TRUE p13 != 0 [L140] lk13 = 1 [L143] COND TRUE p14 != 0 [L144] lk14 = 1 [L147] COND TRUE p15 != 0 [L148] lk15 = 1 [L153] COND FALSE !(p1 != 0) [L158] COND FALSE !(p2 != 0) [L231] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 488 SDtfs, 243 SDslu, 321 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=138occurred 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, 125 NumberOfCodeBlocks, 125 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 5952 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...