/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 [2020-07-21 11:51:04,937 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 11:51:04,939 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 11:51:04,956 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 11:51:04,957 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 11:51:04,958 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 11:51:04,959 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 11:51:04,961 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 11:51:04,963 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 11:51:04,965 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 11:51:04,966 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 11:51:04,967 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 11:51:04,968 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 11:51:04,969 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 11:51:04,970 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 11:51:04,972 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 11:51:04,973 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 11:51:04,975 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 11:51:04,980 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 11:51:04,982 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 11:51:04,984 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 11:51:04,986 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 11:51:04,987 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 11:51:04,988 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 11:51:04,991 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 11:51:05,000 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 11:51:05,002 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 11:51:05,003 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 11:51:05,004 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 [2020-07-21 11:51:05,020 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 11:51:05,020 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 11:51:05,022 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 11:51:05,022 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 11:51:05,022 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 11:51:05,023 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 11:51:05,023 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 11:51:05,023 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 11:51:05,023 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 11:51:05,023 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 11:51:05,024 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 11:51:05,024 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 11:51:05,024 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 11:51:05,024 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 11:51:05,024 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 11:51:05,024 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 11:51:05,025 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 11:51:05,025 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 11:51:05,025 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 11:51:05,025 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 11:51:05,026 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 11:51:05,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 11:51:05,026 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 11:51:05,026 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 11:51:05,026 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 11:51:05,027 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 11:51:05,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:51:05,027 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 11:51:05,027 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 11:51:05,027 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 [2020-07-21 11:51:05,327 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 11:51:05,349 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 11:51:05,354 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 11:51:05,356 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 11:51:05,359 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 11:51:05,361 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/afnp2014.i [2020-07-21 11:51:05,460 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45d95e71a/0b637b5fa73e4b28aa12d673df549f6b/FLAG37c494da3 [2020-07-21 11:51:06,036 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 11:51:06,037 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/afnp2014.i [2020-07-21 11:51:06,045 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45d95e71a/0b637b5fa73e4b28aa12d673df549f6b/FLAG37c494da3 [2020-07-21 11:51:06,398 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45d95e71a/0b637b5fa73e4b28aa12d673df549f6b [2020-07-21 11:51:06,409 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 11:51:06,413 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 11:51:06,415 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 11:51:06,415 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 11:51:06,419 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 11:51:06,421 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:51:06" (1/1) ... [2020-07-21 11:51:06,424 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5402bd52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:51:06, skipping insertion in model container [2020-07-21 11:51:06,425 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:51:06" (1/1) ... [2020-07-21 11:51:06,434 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 11:51:06,454 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 11:51:06,666 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 11:51:06,671 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 11:51:06,685 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 11:51:06,700 INFO L208 MainTranslator]: Completed translation [2020-07-21 11:51:06,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:51:06 WrapperNode [2020-07-21 11:51:06,701 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 11:51:06,701 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 11:51:06,702 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 11:51:06,702 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 11:51:06,713 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:51:06" (1/1) ... [2020-07-21 11:51:06,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:51:06" (1/1) ... [2020-07-21 11:51:06,718 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:51:06" (1/1) ... [2020-07-21 11:51:06,719 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:51:06" (1/1) ... [2020-07-21 11:51:06,723 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:51:06" (1/1) ... [2020-07-21 11:51:06,728 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:51:06" (1/1) ... [2020-07-21 11:51:06,729 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:51:06" (1/1) ... [2020-07-21 11:51:06,812 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 11:51:06,813 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 11:51:06,813 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 11:51:06,813 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 11:51:06,814 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:51:06" (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 [2020-07-21 11:51:06,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 11:51:06,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 11:51:06,897 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 11:51:06,898 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 11:51:06,898 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 11:51:06,898 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 11:51:06,898 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 11:51:06,899 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 11:51:06,900 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 11:51:06,900 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 11:51:06,900 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 11:51:06,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 11:51:06,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 11:51:07,097 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 11:51:07,097 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 11:51:07,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:51:07 BoogieIcfgContainer [2020-07-21 11:51:07,103 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 11:51:07,104 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 11:51:07,105 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 11:51:07,108 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 11:51:07,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:51:06" (1/3) ... [2020-07-21 11:51:07,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1417f59f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:51:07, skipping insertion in model container [2020-07-21 11:51:07,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:51:06" (2/3) ... [2020-07-21 11:51:07,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1417f59f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:51:07, skipping insertion in model container [2020-07-21 11:51:07,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:51:07" (3/3) ... [2020-07-21 11:51:07,113 INFO L109 eAbstractionObserver]: Analyzing ICFG afnp2014.i [2020-07-21 11:51:07,126 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 11:51:07,136 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 11:51:07,178 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 11:51:07,255 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 11:51:07,256 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 11:51:07,256 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 11:51:07,256 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 11:51:07,258 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 11:51:07,258 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 11:51:07,258 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 11:51:07,258 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 11:51:07,279 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-07-21 11:51:07,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-21 11:51:07,285 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:51:07,286 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:51:07,286 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:51:07,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:51:07,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1915647303, now seen corresponding path program 1 times [2020-07-21 11:51:07,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:51:07,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [883877017] [2020-07-21 11:51:07,301 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 [2020-07-21 11:51:07,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:51:07,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 11:51:07,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:51:07,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:51:07,383 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:51:07,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [883877017] [2020-07-21 11:51:07,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:51:07,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 11:51:07,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55823265] [2020-07-21 11:51:07,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 11:51:07,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:51:07,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 11:51:07,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 11:51:07,407 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-07-21 11:51:07,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:51:07,435 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2020-07-21 11:51:07,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 11:51:07,437 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-21 11:51:07,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:51:07,447 INFO L225 Difference]: With dead ends: 32 [2020-07-21 11:51:07,447 INFO L226 Difference]: Without dead ends: 13 [2020-07-21 11:51:07,452 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 [2020-07-21 11:51:07,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-07-21 11:51:07,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-07-21 11:51:07,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-07-21 11:51:07,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2020-07-21 11:51:07,491 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2020-07-21 11:51:07,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:51:07,492 INFO L479 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2020-07-21 11:51:07,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 11:51:07,492 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2020-07-21 11:51:07,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-21 11:51:07,493 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:51:07,493 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:51:07,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:51:07,707 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:51:07,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:51:07,708 INFO L82 PathProgramCache]: Analyzing trace with hash 2084433522, now seen corresponding path program 1 times [2020-07-21 11:51:07,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:51:07,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [297966918] [2020-07-21 11:51:07,708 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 [2020-07-21 11:51:07,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:51:07,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 11:51:07,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:51:07,811 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:51:07,820 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:51:07,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:51:07,846 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:51:07,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [297966918] [2020-07-21 11:51:07,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:51:07,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 11:51:07,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882869256] [2020-07-21 11:51:07,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 11:51:07,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:51:07,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 11:51:07,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:51:07,851 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 5 states. [2020-07-21 11:51:07,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:51:07,912 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2020-07-21 11:51:07,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 11:51:07,913 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-07-21 11:51:07,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:51:07,914 INFO L225 Difference]: With dead ends: 21 [2020-07-21 11:51:07,915 INFO L226 Difference]: Without dead ends: 16 [2020-07-21 11:51:07,916 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 [2020-07-21 11:51:07,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-07-21 11:51:07,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-07-21 11:51:07,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-07-21 11:51:07,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-07-21 11:51:07,922 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 12 [2020-07-21 11:51:07,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:51:07,923 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-07-21 11:51:07,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 11:51:07,923 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-07-21 11:51:07,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-21 11:51:07,924 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:51:07,924 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:51:08,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:51:08,141 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:51:08,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:51:08,142 INFO L82 PathProgramCache]: Analyzing trace with hash 249504553, now seen corresponding path program 1 times [2020-07-21 11:51:08,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:51:08,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [925170697] [2020-07-21 11:51:08,144 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 [2020-07-21 11:51:08,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:51:08,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 11:51:08,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:51:08,202 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:51:08,227 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:51:08,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 11:51:08,259 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:51:08,280 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:51:08,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [925170697] [2020-07-21 11:51:08,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 11:51:08,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-07-21 11:51:08,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017912543] [2020-07-21 11:51:08,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 11:51:08,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:51:08,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 11:51:08,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-21 11:51:08,283 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 6 states. [2020-07-21 11:51:08,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:51:08,342 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2020-07-21 11:51:08,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 11:51:08,342 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-07-21 11:51:08,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:51:08,343 INFO L225 Difference]: With dead ends: 24 [2020-07-21 11:51:08,343 INFO L226 Difference]: Without dead ends: 19 [2020-07-21 11:51:08,344 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 [2020-07-21 11:51:08,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-07-21 11:51:08,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-07-21 11:51:08,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-07-21 11:51:08,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2020-07-21 11:51:08,350 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 15 [2020-07-21 11:51:08,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:51:08,350 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2020-07-21 11:51:08,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 11:51:08,350 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2020-07-21 11:51:08,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-21 11:51:08,351 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:51:08,352 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:51:08,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:51:08,565 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:51:08,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:51:08,566 INFO L82 PathProgramCache]: Analyzing trace with hash -2070634734, now seen corresponding path program 2 times [2020-07-21 11:51:08,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:51:08,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622905633] [2020-07-21 11:51:08,568 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 [2020-07-21 11:51:08,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:51:08,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 11:51:08,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:51:08,669 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:51:08,700 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:51:08,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 11:51:08,733 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:51:08,778 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:51:08,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622905633] [2020-07-21 11:51:08,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 11:51:08,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-07-21 11:51:08,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825732223] [2020-07-21 11:51:08,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 11:51:08,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:51:08,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 11:51:08,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-21 11:51:08,785 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 8 states. [2020-07-21 11:51:08,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:51:08,856 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2020-07-21 11:51:08,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 11:51:08,857 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-07-21 11:51:08,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:51:08,860 INFO L225 Difference]: With dead ends: 19 [2020-07-21 11:51:08,860 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 11:51:08,861 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 [2020-07-21 11:51:08,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 11:51:08,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 11:51:08,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 11:51:08,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 11:51:08,863 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-07-21 11:51:08,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:51:08,865 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 11:51:08,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 11:51:08,867 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 11:51:08,867 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 11:51:09,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:51:09,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 11:51:09,180 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-21 11:51:09,181 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 11:51:09,181 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 11:51:09,181 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 11:51:09,181 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 11:51:09,181 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 11:51:09,182 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-21 11:51:09,182 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-21 11:51:09,183 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-07-21 11:51:09,183 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-21 11:51:09,184 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 22) the Hoare annotation is: true [2020-07-21 11:51:09,184 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 22) no Hoare annotation was computed. [2020-07-21 11:51:09,184 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-07-21 11:51:09,185 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-07-21 11:51:09,185 INFO L268 CegarLoopResult]: For program point L16-3(lines 16 19) no Hoare annotation was computed. [2020-07-21 11:51:09,185 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 22) no Hoare annotation was computed. [2020-07-21 11:51:09,185 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)) [2020-07-21 11:51:09,185 INFO L264 CegarLoopResult]: At program point L16-6(lines 16 19) the Hoare annotation is: (<= main_~y~0 main_~x~0) [2020-07-21 11:51:09,186 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-07-21 11:51:09,186 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-07-21 11:51:09,186 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-07-21 11:51:09,186 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-07-21 11:51:09,186 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-07-21 11:51:09,187 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-07-21 11:51:09,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 11:51:09 BoogieIcfgContainer [2020-07-21 11:51:09,221 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 11:51:09,224 INFO L168 Benchmark]: Toolchain (without parser) took 2811.94 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 102.6 MB in the beginning and 87.2 MB in the end (delta: 15.4 MB). Peak memory consumption was 79.4 MB. Max. memory is 7.1 GB. [2020-07-21 11:51:09,228 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 137.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 11:51:09,230 INFO L168 Benchmark]: CACSL2BoogieTranslator took 286.39 ms. Allocated memory is still 137.4 MB. Free memory was 102.2 MB in the beginning and 92.8 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-07-21 11:51:09,238 INFO L168 Benchmark]: Boogie Preprocessor took 110.69 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 92.8 MB in the beginning and 181.4 MB in the end (delta: -88.6 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. [2020-07-21 11:51:09,251 INFO L168 Benchmark]: RCFGBuilder took 290.24 ms. Allocated memory is still 201.3 MB. Free memory was 181.4 MB in the beginning and 168.9 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-07-21 11:51:09,252 INFO L168 Benchmark]: TraceAbstraction took 2116.75 ms. Allocated memory is still 201.3 MB. Free memory was 168.2 MB in the beginning and 87.2 MB in the end (delta: 81.0 MB). Peak memory consumption was 81.0 MB. Max. memory is 7.1 GB. [2020-07-21 11:51:09,258 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 137.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 286.39 ms. Allocated memory is still 137.4 MB. Free memory was 102.2 MB in the beginning and 92.8 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.69 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 92.8 MB in the beginning and 181.4 MB in the end (delta: -88.6 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 290.24 ms. Allocated memory is still 201.3 MB. Free memory was 181.4 MB in the beginning and 168.9 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2116.75 ms. Allocated memory is still 201.3 MB. Free memory was 168.2 MB in the beginning and 87.2 MB in the end (delta: 81.0 MB). Peak memory consumption was 81.0 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: 1.8s, 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, 0.4s 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...