/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/afnp2014.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 12:00:00,978 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 12:00:00,980 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 12:00:00,996 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 12:00:00,996 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 12:00:00,999 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 12:00:01,001 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 12:00:01,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 12:00:01,009 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 12:00:01,010 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 12:00:01,011 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 12:00:01,012 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 12:00:01,012 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 12:00:01,013 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 12:00:01,015 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 12:00:01,016 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 12:00:01,017 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 12:00:01,018 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 12:00:01,020 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 12:00:01,022 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 12:00:01,024 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 12:00:01,025 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 12:00:01,026 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 12:00:01,027 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 12:00:01,030 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 12:00:01,038 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 12:00:01,039 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 12:00:01,040 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 12:00:01,041 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 12:00:01,060 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 12:00:01,061 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 12:00:01,062 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 12:00:01,062 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 12:00:01,062 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 12:00:01,063 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 12:00:01,063 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 12:00:01,063 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 12:00:01,063 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 12:00:01,063 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 12:00:01,064 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 12:00:01,064 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 12:00:01,064 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 12:00:01,064 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 12:00:01,064 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 12:00:01,065 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 12:00:01,065 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 12:00:01,065 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 12:00:01,065 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 12:00:01,065 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 12:00:01,066 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 12:00:01,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 12:00:01,066 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 12:00:01,066 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 12:00:01,067 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 12:00:01,067 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 12:00:01,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:00:01,067 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 12:00:01,067 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 12:00:01,067 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 -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-20 12:00:01,355 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 12:00:01,377 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 12:00:01,380 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 12:00:01,383 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 12:00:01,385 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 12:00:01,387 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/afnp2014.i [2020-07-20 12:00:01,473 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fab584ef7/fc28b6d2c7f9436b8945bcd68a4b88b7/FLAGfa5e416e1 [2020-07-20 12:00:01,997 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 12:00:01,998 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/afnp2014.i [2020-07-20 12:00:02,005 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fab584ef7/fc28b6d2c7f9436b8945bcd68a4b88b7/FLAGfa5e416e1 [2020-07-20 12:00:02,317 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fab584ef7/fc28b6d2c7f9436b8945bcd68a4b88b7 [2020-07-20 12:00:02,326 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 12:00:02,329 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 12:00:02,330 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 12:00:02,331 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 12:00:02,335 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 12:00:02,336 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 12:00:02" (1/1) ... [2020-07-20 12:00:02,339 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52dce205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:00:02, skipping insertion in model container [2020-07-20 12:00:02,339 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 12:00:02" (1/1) ... [2020-07-20 12:00:02,348 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 12:00:02,369 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 12:00:02,555 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 12:00:02,560 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 12:00:02,578 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 12:00:02,594 INFO L208 MainTranslator]: Completed translation [2020-07-20 12:00:02,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:00:02 WrapperNode [2020-07-20 12:00:02,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 12:00:02,596 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 12:00:02,596 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 12:00:02,596 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 12:00:02,611 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:00:02" (1/1) ... [2020-07-20 12:00:02,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:00:02" (1/1) ... [2020-07-20 12:00:02,617 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:00:02" (1/1) ... [2020-07-20 12:00:02,617 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:00:02" (1/1) ... [2020-07-20 12:00:02,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:00:02" (1/1) ... [2020-07-20 12:00:02,626 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:00:02" (1/1) ... [2020-07-20 12:00:02,627 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:00:02" (1/1) ... [2020-07-20 12:00:02,628 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 12:00:02,629 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 12:00:02,629 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 12:00:02,629 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 12:00:02,630 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:00:02" (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 [2020-07-20 12:00:02,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 12:00:02,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 12:00:02,772 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 12:00:02,772 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 12:00:02,772 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 12:00:02,772 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 12:00:02,772 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 12:00:02,774 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 12:00:02,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 12:00:02,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 12:00:02,774 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 12:00:02,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 12:00:02,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 12:00:02,979 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 12:00:02,979 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 12:00:02,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 12:00:02 BoogieIcfgContainer [2020-07-20 12:00:02,984 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 12:00:02,985 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 12:00:02,986 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 12:00:02,989 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 12:00:02,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 12:00:02" (1/3) ... [2020-07-20 12:00:02,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14ef362f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 12:00:02, skipping insertion in model container [2020-07-20 12:00:02,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:00:02" (2/3) ... [2020-07-20 12:00:02,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14ef362f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 12:00:02, skipping insertion in model container [2020-07-20 12:00:02,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 12:00:02" (3/3) ... [2020-07-20 12:00:02,994 INFO L109 eAbstractionObserver]: Analyzing ICFG afnp2014.i [2020-07-20 12:00:03,006 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 12:00:03,015 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 12:00:03,034 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 12:00:03,097 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 12:00:03,097 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 12:00:03,097 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 12:00:03,098 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 12:00:03,098 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 12:00:03,098 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 12:00:03,098 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 12:00:03,098 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 12:00:03,128 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-07-20 12:00:03,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-20 12:00:03,141 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:00:03,142 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 12:00:03,142 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:00:03,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:00:03,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1915647303, now seen corresponding path program 1 times [2020-07-20 12:00:03,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:00:03,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1838627539] [2020-07-20 12:00:03,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:00:03,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:00:03,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 12:00:03,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:00:03,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:00:03,234 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 12:00:03,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1838627539] [2020-07-20 12:00:03,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 12:00:03,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 12:00:03,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300720664] [2020-07-20 12:00:03,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 12:00:03,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:00:03,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 12:00:03,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 12:00:03,256 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-07-20 12:00:03,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:00:03,288 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2020-07-20 12:00:03,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 12:00:03,289 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-20 12:00:03,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:00:03,299 INFO L225 Difference]: With dead ends: 32 [2020-07-20 12:00:03,299 INFO L226 Difference]: Without dead ends: 13 [2020-07-20 12:00:03,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 12:00:03,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-07-20 12:00:03,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-07-20 12:00:03,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-07-20 12:00:03,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2020-07-20 12:00:03,342 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2020-07-20 12:00:03,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:00:03,343 INFO L479 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2020-07-20 12:00:03,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 12:00:03,343 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2020-07-20 12:00:03,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-20 12:00:03,344 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:00:03,344 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 12:00:03,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:00:03,561 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:00:03,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:00:03,562 INFO L82 PathProgramCache]: Analyzing trace with hash 2084433522, now seen corresponding path program 1 times [2020-07-20 12:00:03,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:00:03,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011649663] [2020-07-20 12:00:03,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:00:03,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:00:03,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 12:00:03,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:00:03,658 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 12:00:03,665 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 12:00:03,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:00:03,700 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 12:00:03,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011649663] [2020-07-20 12:00:03,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 12:00:03,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 12:00:03,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542190977] [2020-07-20 12:00:03,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 12:00:03,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:00:03,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 12:00:03,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 12:00:03,707 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 5 states. [2020-07-20 12:00:03,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:00:03,763 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2020-07-20 12:00:03,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 12:00:03,765 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-07-20 12:00:03,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:00:03,766 INFO L225 Difference]: With dead ends: 21 [2020-07-20 12:00:03,766 INFO L226 Difference]: Without dead ends: 16 [2020-07-20 12:00:03,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 12:00:03,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-07-20 12:00:03,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-07-20 12:00:03,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-07-20 12:00:03,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-07-20 12:00:03,774 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 12 [2020-07-20 12:00:03,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:00:03,774 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-07-20 12:00:03,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 12:00:03,774 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-07-20 12:00:03,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-20 12:00:03,775 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:00:03,775 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 12:00:03,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:00:03,990 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:00:03,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:00:03,991 INFO L82 PathProgramCache]: Analyzing trace with hash 249504553, now seen corresponding path program 1 times [2020-07-20 12:00:03,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:00:03,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1390938608] [2020-07-20 12:00:03,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:00:04,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:00:04,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 12:00:04,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:00:04,071 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 12:00:04,096 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:00:04,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 12:00:04,122 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 12:00:04,142 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:00:04,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1390938608] [2020-07-20 12:00:04,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 12:00:04,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-07-20 12:00:04,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447561290] [2020-07-20 12:00:04,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 12:00:04,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:00:04,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 12:00:04,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 12:00:04,145 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 6 states. [2020-07-20 12:00:04,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:00:04,200 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2020-07-20 12:00:04,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 12:00:04,201 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-07-20 12:00:04,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:00:04,202 INFO L225 Difference]: With dead ends: 24 [2020-07-20 12:00:04,202 INFO L226 Difference]: Without dead ends: 19 [2020-07-20 12:00:04,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-20 12:00:04,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-07-20 12:00:04,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-07-20 12:00:04,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-07-20 12:00:04,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2020-07-20 12:00:04,209 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 15 [2020-07-20 12:00:04,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:00:04,209 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2020-07-20 12:00:04,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 12:00:04,210 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2020-07-20 12:00:04,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-20 12:00:04,210 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:00:04,210 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 12:00:04,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:00:04,425 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:00:04,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:00:04,426 INFO L82 PathProgramCache]: Analyzing trace with hash -2070634734, now seen corresponding path program 2 times [2020-07-20 12:00:04,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:00:04,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1590942884] [2020-07-20 12:00:04,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:00:04,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:00:04,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 12:00:04,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:00:04,497 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 12:00:04,519 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:00:04,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 12:00:04,543 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 12:00:04,579 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:00:04,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1590942884] [2020-07-20 12:00:04,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 12:00:04,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-07-20 12:00:04,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995288207] [2020-07-20 12:00:04,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 12:00:04,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:00:04,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 12:00:04,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-20 12:00:04,582 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 8 states. [2020-07-20 12:00:04,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:00:04,629 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2020-07-20 12:00:04,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 12:00:04,629 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-07-20 12:00:04,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:00:04,630 INFO L225 Difference]: With dead ends: 19 [2020-07-20 12:00:04,630 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 12:00:04,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-07-20 12:00:04,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 12:00:04,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 12:00:04,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 12:00:04,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 12:00:04,632 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-07-20 12:00:04,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:00:04,633 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 12:00:04,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 12:00:04,633 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 12:00:04,633 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 12:00:04,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:00:04,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 12:00:04,937 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-20 12:00:04,937 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 12:00:04,937 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 12:00:04,938 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 12:00:04,938 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 12:00:04,938 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 12:00:04,938 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-20 12:00:04,938 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-20 12:00:04,938 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-07-20 12:00:04,939 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-20 12:00:04,939 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 22) the Hoare annotation is: true [2020-07-20 12:00:04,939 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 22) no Hoare annotation was computed. [2020-07-20 12:00:04,939 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-07-20 12:00:04,939 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-07-20 12:00:04,939 INFO L268 CegarLoopResult]: For program point L16-3(lines 16 19) no Hoare annotation was computed. [2020-07-20 12:00:04,940 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 22) no Hoare annotation was computed. [2020-07-20 12:00:04,940 INFO L264 CegarLoopResult]: At program point L16-5(lines 16 19) the Hoare annotation is: (and (<= main_~y~0 main_~x~0) (<= 0 main_~y~0) (<= 1 main_~x~0)) [2020-07-20 12:00:04,940 INFO L264 CegarLoopResult]: At program point L16-6(lines 16 19) the Hoare annotation is: (<= main_~y~0 main_~x~0) [2020-07-20 12:00:04,940 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-07-20 12:00:04,940 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-07-20 12:00:04,941 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-07-20 12:00:04,941 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-07-20 12:00:04,941 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-07-20 12:00:04,952 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-07-20 12:00:04,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 12:00:04 BoogieIcfgContainer [2020-07-20 12:00:04,971 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 12:00:04,973 INFO L168 Benchmark]: Toolchain (without parser) took 2644.82 ms. Allocated memory was 137.9 MB in the beginning and 233.8 MB in the end (delta: 95.9 MB). Free memory was 103.1 MB in the beginning and 205.4 MB in the end (delta: -102.3 MB). Peak memory consumption was 85.6 MB. Max. memory is 7.1 GB. [2020-07-20 12:00:04,974 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 137.9 MB. Free memory is still 120.8 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 12:00:04,975 INFO L168 Benchmark]: CACSL2BoogieTranslator took 265.04 ms. Allocated memory is still 137.9 MB. Free memory was 102.7 MB in the beginning and 92.9 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-07-20 12:00:04,976 INFO L168 Benchmark]: Boogie Preprocessor took 32.47 ms. Allocated memory is still 137.9 MB. Free memory was 92.9 MB in the beginning and 91.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-07-20 12:00:04,977 INFO L168 Benchmark]: RCFGBuilder took 355.36 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 91.3 MB in the beginning and 169.3 MB in the end (delta: -78.0 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2020-07-20 12:00:04,978 INFO L168 Benchmark]: TraceAbstraction took 1985.68 ms. Allocated memory was 201.3 MB in the beginning and 233.8 MB in the end (delta: 32.5 MB). Free memory was 168.7 MB in the beginning and 205.4 MB in the end (delta: -36.7 MB). Peak memory consumption was 87.7 MB. Max. memory is 7.1 GB. [2020-07-20 12:00:04,982 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 137.9 MB. Free memory is still 120.8 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 265.04 ms. Allocated memory is still 137.9 MB. Free memory was 102.7 MB in the beginning and 92.9 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 32.47 ms. Allocated memory is still 137.9 MB. Free memory was 92.9 MB in the beginning and 91.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 355.36 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 91.3 MB in the beginning and 169.3 MB in the end (delta: -78.0 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1985.68 ms. Allocated memory was 201.3 MB in the beginning and 233.8 MB in the end (delta: 32.5 MB). Free memory was 168.7 MB in the beginning and 205.4 MB in the end (delta: -36.7 MB). Peak memory consumption was 87.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: (y <= x && 0 <= y) && 1 <= x - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.7s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 52 SDtfs, 10 SDslu, 107 SDs, 0 SdLazy, 42 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 65 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 14 NumberOfFragments, 18 HoareAnnotationTreeSize, 10 FomulaSimplifications, 24 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 3106 SizeOfPredicates, 8 NumberOfNonLiveVariables, 141 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 0/24 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 correct! Received shutdown request...