/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/example_epsilon_write.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-12 18:42:20,021 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-12 18:42:20,022 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-12 18:42:20,049 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-12 18:42:20,050 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-12 18:42:20,050 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-12 18:42:20,051 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-12 18:42:20,085 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-12 18:42:20,086 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-12 18:42:20,087 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-12 18:42:20,088 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-12 18:42:20,088 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-12 18:42:20,089 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-12 18:42:20,089 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-12 18:42:20,090 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-12 18:42:20,091 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-12 18:42:20,091 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-12 18:42:20,092 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-12 18:42:20,093 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-12 18:42:20,094 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-12 18:42:20,095 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-12 18:42:20,102 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-12 18:42:20,103 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-12 18:42:20,105 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-12 18:42:20,110 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-12 18:42:20,110 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-12 18:42:20,110 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-12 18:42:20,111 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-12 18:42:20,111 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-12 18:42:20,112 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-12 18:42:20,112 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-12 18:42:20,113 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-12 18:42:20,113 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-12 18:42:20,113 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-12 18:42:20,114 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-12 18:42:20,114 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-12 18:42:20,115 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-12 18:42:20,115 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-12 18:42:20,115 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-12 18:42:20,116 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-12 18:42:20,116 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-12 18:42:20,117 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-08-12 18:42:20,135 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-12 18:42:20,135 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-12 18:42:20,135 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-12 18:42:20,135 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-12 18:42:20,136 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-12 18:42:20,136 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-12 18:42:20,136 INFO L138 SettingsManager]: * Use SBE=true [2021-08-12 18:42:20,136 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-12 18:42:20,136 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-12 18:42:20,136 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-12 18:42:20,136 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-12 18:42:20,137 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-12 18:42:20,137 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-12 18:42:20,137 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-12 18:42:20,137 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-12 18:42:20,137 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-12 18:42:20,137 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-12 18:42:20,137 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-12 18:42:20,137 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-12 18:42:20,137 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-12 18:42:20,137 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-12 18:42:20,137 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-12 18:42:20,138 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-12 18:42:20,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-12 18:42:20,138 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-12 18:42:20,138 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-12 18:42:20,138 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-12 18:42:20,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-12 18:42:20,138 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-12 18:42:20,138 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-12 18:42:20,138 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-12 18:42:20,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-12 18:42:20,406 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-12 18:42:20,408 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-12 18:42:20,408 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-12 18:42:20,410 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-12 18:42:20,410 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/example_epsilon_write.bpl [2021-08-12 18:42:20,410 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/example_epsilon_write.bpl' [2021-08-12 18:42:20,706 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-12 18:42:20,707 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-12 18:42:20,710 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-12 18:42:20,710 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-12 18:42:20,710 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-12 18:42:20,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_epsilon_write.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 06:42:20" (1/1) ... [2021-08-12 18:42:20,724 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_epsilon_write.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 06:42:20" (1/1) ... [2021-08-12 18:42:20,733 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-12 18:42:20,734 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-12 18:42:20,734 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-12 18:42:20,734 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-12 18:42:20,740 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_epsilon_write.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 06:42:20" (1/1) ... [2021-08-12 18:42:20,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_epsilon_write.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 06:42:20" (1/1) ... [2021-08-12 18:42:20,741 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_epsilon_write.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 06:42:20" (1/1) ... [2021-08-12 18:42:20,741 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_epsilon_write.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 06:42:20" (1/1) ... [2021-08-12 18:42:20,742 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_epsilon_write.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 06:42:20" (1/1) ... [2021-08-12 18:42:20,743 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_epsilon_write.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 06:42:20" (1/1) ... [2021-08-12 18:42:20,743 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_epsilon_write.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 06:42:20" (1/1) ... [2021-08-12 18:42:20,744 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-12 18:42:20,745 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-12 18:42:20,745 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-12 18:42:20,745 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-12 18:42:20,746 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_epsilon_write.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 06:42:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-12 18:42:20,800 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-12 18:42:20,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-12 18:42:20,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-12 18:42:20,800 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_x given in one single declaration [2021-08-12 18:42:20,800 INFO L130 BoogieDeclarations]: Found specification of procedure set_x [2021-08-12 18:42:20,800 INFO L138 BoogieDeclarations]: Found implementation of procedure set_x [2021-08-12 18:42:20,801 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-12 18:42:20,896 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-12 18:42:20,897 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-12 18:42:20,898 INFO L202 PluginConnector]: Adding new model example_epsilon_write.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.08 06:42:20 BoogieIcfgContainer [2021-08-12 18:42:20,898 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-12 18:42:20,900 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-12 18:42:20,900 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-12 18:42:20,902 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-12 18:42:20,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_epsilon_write.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 06:42:20" (1/2) ... [2021-08-12 18:42:20,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aff3e7c and model type example_epsilon_write.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.08 06:42:20, skipping insertion in model container [2021-08-12 18:42:20,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_epsilon_write.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.08 06:42:20" (2/2) ... [2021-08-12 18:42:20,904 INFO L111 eAbstractionObserver]: Analyzing ICFG example_epsilon_write.bpl [2021-08-12 18:42:20,911 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-12 18:42:20,913 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-12 18:42:20,914 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-12 18:42:20,942 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-08-12 18:42:20,959 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-12 18:42:20,988 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-12 18:42:20,989 INFO L379 AbstractCegarLoop]: Hoare is true [2021-08-12 18:42:20,989 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-12 18:42:20,989 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-12 18:42:20,989 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-12 18:42:20,989 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-12 18:42:20,989 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-12 18:42:20,989 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-12 18:42:20,994 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 13 places, 9 transitions, 26 flow [2021-08-12 18:42:21,001 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:42:21,002 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:42:21,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-12 18:42:21,006 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:42:21,006 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-12 18:42:21,007 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 18:42:21,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:42:21,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1446751537, now seen corresponding path program 1 times [2021-08-12 18:42:21,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:42:21,016 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384041683] [2021-08-12 18:42:21,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:42:21,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:42:21,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:42:21,111 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:42:21,111 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384041683] [2021-08-12 18:42:21,112 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384041683] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:42:21,112 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:42:21,113 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-12 18:42:21,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637986267] [2021-08-12 18:42:21,116 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-12 18:42:21,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:42:21,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-12 18:42:21,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 18:42:21,130 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:42:21,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:42:21,161 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2021-08-12 18:42:21,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-12 18:42:21,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-08-12 18:42:21,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:42:21,178 INFO L225 Difference]: With dead ends: 17 [2021-08-12 18:42:21,178 INFO L226 Difference]: Without dead ends: 7 [2021-08-12 18:42:21,180 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 18:42:21,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-08-12 18:42:21,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-08-12 18:42:21,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:42:21,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-08-12 18:42:21,203 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2021-08-12 18:42:21,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:42:21,203 INFO L482 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-08-12 18:42:21,203 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:42:21,203 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-08-12 18:42:21,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-12 18:42:21,204 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:42:21,204 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-12 18:42:21,205 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-12 18:42:21,205 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 18:42:21,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:42:21,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1442109907, now seen corresponding path program 2 times [2021-08-12 18:42:21,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:42:21,208 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350637378] [2021-08-12 18:42:21,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:42:21,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:42:21,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:42:21,229 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:42:21,230 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350637378] [2021-08-12 18:42:21,230 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350637378] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:42:21,231 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:42:21,231 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-12 18:42:21,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021585206] [2021-08-12 18:42:21,232 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-12 18:42:21,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:42:21,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-12 18:42:21,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 18:42:21,233 INFO L87 Difference]: Start difference. First operand 7 states and 6 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:42:21,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:42:21,240 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2021-08-12 18:42:21,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-12 18:42:21,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-08-12 18:42:21,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:42:21,241 INFO L225 Difference]: With dead ends: 7 [2021-08-12 18:42:21,241 INFO L226 Difference]: Without dead ends: 0 [2021-08-12 18:42:21,242 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 18:42:21,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-12 18:42:21,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-12 18:42:21,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:42:21,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-12 18:42:21,243 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2021-08-12 18:42:21,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:42:21,243 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-12 18:42:21,243 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:42:21,243 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-12 18:42:21,243 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-12 18:42:21,243 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-12 18:42:21,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-12 18:42:21,355 INFO L1281 BasicCegarLoop]: Computed Owicki-Gries annotation of size 1269 in 110321061ns [2021-08-12 18:42:21,356 INFO L113 kiGriesValidityCheck]: 6#(or (and (not v_np7_1) v_np2_1 (not v_np3_1) (not v_np9_1) v_np5_1 (not v_np8_1) (not v_np0_1) (not v_np1_1) (not v_np11_1) v_np12_1 (not v_np6_1) (not v_np4_1) (not v_np10_1)) (and (<= x 0) (not v_np2_1) (not v_np3_1) (not v_np9_1) v_np5_1 (not v_np8_1) v_np7_1 (not v_np0_1) (not v_np1_1) (not v_np11_1) v_np12_1 (not v_np6_1) (not v_np4_1) (not v_np10_1)) (and (<= x 0) (not v_np2_1) (not v_np7_1) v_np3_1 (not v_np9_1) v_np5_1 (not v_np8_1) (not v_np0_1) (not v_np1_1) (not v_np11_1) v_np12_1 (not v_np6_1) (not v_np4_1) (not v_np10_1))) [2021-08-12 18:42:21,360 INFO L113 kiGriesValidityCheck]: 10#(and (not v_np2_1) v_np9_1 (= x 0) (not v_np5_1) (not v_np7_1) (not v_np3_1) (not v_np8_1) (not v_np0_1) v_np11_1 (not v_np1_1) (not v_np6_1) (not v_np12_1) (not v_np4_1) (not v_np10_1)) [2021-08-12 18:42:21,361 INFO L113 kiGriesValidityCheck]: 13#(or (and (not v_np2_1) (= x 0) (not v_np5_1) (not v_np7_1) v_np3_1 (not v_np9_1) (not v_np8_1) (not v_np1_1) (not v_np11_1) v_np12_1 (not v_np6_1) (not v_np4_1) v_np0_1 (not v_np10_1)) (and (not v_np7_1) v_np2_1 (not v_np3_1) (not v_np9_1) v_np5_1 (not v_np8_1) (not v_np0_1) (not v_np1_1) (not v_np11_1) v_np12_1 (not v_np6_1) (not v_np4_1) (not v_np10_1)) (and (not v_np2_1) (= x 0) (not v_np5_1) (not v_np3_1) (not v_np9_1) (not v_np8_1) v_np7_1 (not v_np1_1) (not v_np11_1) v_np12_1 (not v_np6_1) (not v_np4_1) v_np0_1 (not v_np10_1)) (and (<= x 0) (not v_np2_1) (not v_np3_1) (not v_np9_1) v_np5_1 (not v_np8_1) v_np7_1 (not v_np0_1) (not v_np1_1) (not v_np11_1) v_np12_1 (not v_np6_1) (not v_np4_1) (not v_np10_1)) (and (not v_np5_1) (not v_np7_1) v_np2_1 (not v_np3_1) (not v_np9_1) (not v_np8_1) (not v_np1_1) (not v_np11_1) v_np12_1 (not v_np6_1) (not v_np4_1) v_np0_1 (not v_np10_1)) (and (<= x 0) (not v_np2_1) (not v_np7_1) v_np3_1 (not v_np9_1) v_np5_1 (not v_np8_1) (not v_np0_1) (not v_np1_1) (not v_np11_1) v_np12_1 (not v_np6_1) (not v_np4_1) (not v_np10_1))) [2021-08-12 18:42:21,361 INFO L113 kiGriesValidityCheck]: 1#(or (and (not v_np2_1) (= x 0) (not v_np5_1) (not v_np7_1) v_np3_1 (not v_np9_1) (not v_np8_1) (not v_np1_1) (not v_np11_1) v_np12_1 (not v_np6_1) (not v_np4_1) v_np0_1 (not v_np10_1)) (and (not v_np2_1) (= x 0) (not v_np5_1) (not v_np3_1) (not v_np9_1) (not v_np8_1) v_np7_1 (not v_np1_1) (not v_np11_1) v_np12_1 (not v_np6_1) (not v_np4_1) v_np0_1 (not v_np10_1)) (and (not v_np5_1) (not v_np7_1) v_np2_1 (not v_np3_1) (not v_np9_1) (not v_np8_1) (not v_np1_1) (not v_np11_1) v_np12_1 (not v_np6_1) (not v_np4_1) v_np0_1 (not v_np10_1))) [2021-08-12 18:42:21,362 INFO L113 kiGriesValidityCheck]: 8#(or (and (not v_np2_1) (= x 0) (not v_np5_1) (not v_np3_1) (not v_np9_1) (not v_np8_1) v_np7_1 (not v_np1_1) (not v_np11_1) v_np12_1 (not v_np6_1) (not v_np4_1) v_np0_1 (not v_np10_1)) (and (<= x 0) (not v_np2_1) (not v_np3_1) (not v_np9_1) v_np5_1 (not v_np8_1) v_np7_1 (not v_np0_1) (not v_np1_1) (not v_np11_1) v_np12_1 (not v_np6_1) (not v_np4_1) (not v_np10_1))) [2021-08-12 18:42:21,365 INFO L113 kiGriesValidityCheck]: 2#(and (not v_np2_1) (not v_np5_1) (not v_np7_1) v_np1_1 (not v_np3_1) (not v_np9_1) (not v_np8_1) (not v_np0_1) v_np11_1 (not v_np6_1) (not v_np12_1) (not v_np4_1) (not v_np10_1)) [2021-08-12 18:42:21,365 INFO L113 kiGriesValidityCheck]: 12#(or (and (<= x 0) (not v_np2_1) (not v_np5_1) (not v_np7_1) (not v_np3_1) (not v_np9_1) (not v_np0_1) v_np8_1 v_np11_1 (not v_np1_1) (not v_np6_1) (not v_np12_1) (not v_np4_1) (not v_np10_1)) (and (<= x 0) (not v_np2_1) (not v_np5_1) (not v_np7_1) (not v_np3_1) v_np4_1 (not v_np9_1) (not v_np8_1) (not v_np0_1) v_np11_1 (not v_np1_1) (not v_np6_1) (not v_np12_1) (not v_np10_1)) (and (not v_np2_1) v_np9_1 (= x 0) (not v_np5_1) (not v_np7_1) (not v_np3_1) (not v_np8_1) (not v_np0_1) v_np11_1 (not v_np1_1) (not v_np6_1) (not v_np12_1) (not v_np4_1) (not v_np10_1)) (and (not v_np2_1) (not v_np5_1) (not v_np7_1) v_np1_1 (not v_np3_1) (not v_np9_1) (not v_np8_1) (not v_np0_1) v_np11_1 (not v_np6_1) (not v_np12_1) (not v_np4_1) (not v_np10_1))) [2021-08-12 18:42:21,368 INFO L113 kiGriesValidityCheck]: 10#(and (not v_np2_1) v_np9_1 (= x 0) (not v_np5_1) (not v_np7_1) (not v_np3_1) (not v_np8_1) (not v_np0_1) v_np11_1 (not v_np1_1) (not v_np6_1) (not v_np12_1) (not v_np4_1) (not v_np10_1)) [2021-08-12 18:42:21,370 INFO L113 kiGriesValidityCheck]: 9#(and (<= x 0) (not v_np2_1) (not v_np5_1) (not v_np7_1) (not v_np3_1) (not v_np9_1) (not v_np0_1) v_np8_1 v_np11_1 (not v_np1_1) (not v_np6_1) (not v_np12_1) (not v_np4_1) (not v_np10_1)) [2021-08-12 18:42:21,372 INFO L113 kiGriesValidityCheck]: 4#(or (and (not v_np2_1) (= x 0) (not v_np5_1) (not v_np7_1) v_np3_1 (not v_np9_1) (not v_np8_1) (not v_np1_1) (not v_np11_1) v_np12_1 (not v_np6_1) (not v_np4_1) v_np0_1 (not v_np10_1)) (and (<= x 0) (not v_np2_1) (not v_np7_1) v_np3_1 (not v_np9_1) v_np5_1 (not v_np8_1) (not v_np0_1) (not v_np1_1) (not v_np11_1) v_np12_1 (not v_np6_1) (not v_np4_1) (not v_np10_1))) [2021-08-12 18:42:21,374 INFO L113 kiGriesValidityCheck]: 13#(or (and (not v_np2_1) (= x 0) (not v_np5_1) (not v_np7_1) v_np3_1 (not v_np9_1) (not v_np8_1) (not v_np1_1) (not v_np11_1) v_np12_1 (not v_np6_1) (not v_np4_1) v_np0_1 (not v_np10_1)) (and (not v_np7_1) v_np2_1 (not v_np3_1) (not v_np9_1) v_np5_1 (not v_np8_1) (not v_np0_1) (not v_np1_1) (not v_np11_1) v_np12_1 (not v_np6_1) (not v_np4_1) (not v_np10_1)) (and (not v_np2_1) (= x 0) (not v_np5_1) (not v_np3_1) (not v_np9_1) (not v_np8_1) v_np7_1 (not v_np1_1) (not v_np11_1) v_np12_1 (not v_np6_1) (not v_np4_1) v_np0_1 (not v_np10_1)) (and (<= x 0) (not v_np2_1) (not v_np3_1) (not v_np9_1) v_np5_1 (not v_np8_1) v_np7_1 (not v_np0_1) (not v_np1_1) (not v_np11_1) v_np12_1 (not v_np6_1) (not v_np4_1) (not v_np10_1)) (and (not v_np5_1) (not v_np7_1) v_np2_1 (not v_np3_1) (not v_np9_1) (not v_np8_1) (not v_np1_1) (not v_np11_1) v_np12_1 (not v_np6_1) (not v_np4_1) v_np0_1 (not v_np10_1)) (and (<= x 0) (not v_np2_1) (not v_np7_1) v_np3_1 (not v_np9_1) v_np5_1 (not v_np8_1) (not v_np0_1) (not v_np1_1) (not v_np11_1) v_np12_1 (not v_np6_1) (not v_np4_1) (not v_np10_1))) [2021-08-12 18:42:21,374 INFO L113 kiGriesValidityCheck]: 2#(and (not v_np2_1) (not v_np5_1) (not v_np7_1) v_np1_1 (not v_np3_1) (not v_np9_1) (not v_np8_1) (not v_np0_1) v_np11_1 (not v_np6_1) (not v_np12_1) (not v_np4_1) (not v_np10_1)) [2021-08-12 18:42:21,376 INFO L113 kiGriesValidityCheck]: 3#(or (and (not v_np7_1) v_np2_1 (not v_np3_1) (not v_np9_1) v_np5_1 (not v_np8_1) (not v_np0_1) (not v_np1_1) (not v_np11_1) v_np12_1 (not v_np6_1) (not v_np4_1) (not v_np10_1)) (and (not v_np5_1) (not v_np7_1) v_np2_1 (not v_np3_1) (not v_np9_1) (not v_np8_1) (not v_np1_1) (not v_np11_1) v_np12_1 (not v_np6_1) (not v_np4_1) v_np0_1 (not v_np10_1))) [2021-08-12 18:42:21,410 INFO L1287 BasicCegarLoop]: Checked inductivity and non-interference of Owicki-Gries annotation in 56422945ns [2021-08-12 18:42:21,412 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-12 18:42:21,414 INFO L202 PluginConnector]: Adding new model example_epsilon_write.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.08 06:42:21 BasicIcfg [2021-08-12 18:42:21,414 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-12 18:42:21,415 INFO L168 Benchmark]: Toolchain (without parser) took 707.62 ms. Allocated memory is still 183.5 MB. Free memory was 163.6 MB in the beginning and 143.7 MB in the end (delta: 20.0 MB). Peak memory consumption was 21.1 MB. Max. memory is 8.0 GB. [2021-08-12 18:42:21,416 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 183.5 MB. Free memory was 164.7 MB in the beginning and 164.6 MB in the end (delta: 118.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-08-12 18:42:21,416 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.01 ms. Allocated memory is still 183.5 MB. Free memory was 163.6 MB in the beginning and 162.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-12 18:42:21,416 INFO L168 Benchmark]: Boogie Preprocessor took 9.97 ms. Allocated memory is still 183.5 MB. Free memory was 162.1 MB in the beginning and 161.3 MB in the end (delta: 758.6 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-12 18:42:21,417 INFO L168 Benchmark]: RCFGBuilder took 153.47 ms. Allocated memory is still 183.5 MB. Free memory was 161.2 MB in the beginning and 153.3 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2021-08-12 18:42:21,417 INFO L168 Benchmark]: TraceAbstraction took 514.44 ms. Allocated memory is still 183.5 MB. Free memory was 152.8 MB in the beginning and 143.7 MB in the end (delta: 9.2 MB). Peak memory consumption was 10.6 MB. Max. memory is 8.0 GB. [2021-08-12 18:42:21,419 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 183.5 MB. Free memory was 164.7 MB in the beginning and 164.6 MB in the end (delta: 118.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 23.01 ms. Allocated memory is still 183.5 MB. Free memory was 163.6 MB in the beginning and 162.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 9.97 ms. Allocated memory is still 183.5 MB. Free memory was 162.1 MB in the beginning and 161.3 MB in the end (delta: 758.6 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 153.47 ms. Allocated memory is still 183.5 MB. Free memory was 161.2 MB in the beginning and 153.3 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 514.44 ms. Allocated memory is still 183.5 MB. Free memory was 152.8 MB in the beginning and 143.7 MB in the end (delta: 9.2 MB). Peak memory consumption was 10.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 14 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 256.6ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 5.5ms, AutomataDifference: 72.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 11 SDtfs, 4 SDslu, 2 SDs, 0 SdLazy, 4 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 14.1ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 3.1ms SsaConstructionTime, 14.7ms SatisfiabilityAnalysisTime, 59.2ms InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 20 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...