/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-new/half.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 16:58:10,989 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 16:58:10,991 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 16:58:11,030 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 16:58:11,030 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 16:58:11,038 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 16:58:11,039 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 16:58:11,042 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 16:58:11,045 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 16:58:11,047 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 16:58:11,048 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 16:58:11,050 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 16:58:11,051 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 16:58:11,053 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 16:58:11,055 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 16:58:11,056 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 16:58:11,058 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 16:58:11,059 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 16:58:11,060 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 16:58:11,066 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 16:58:11,069 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 16:58:11,070 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 16:58:11,071 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 16:58:11,072 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 16:58:11,082 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 16:58:11,092 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 16:58:11,093 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 16:58:11,094 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 16:58:11,095 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 [2020-08-22 16:58:11,127 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 16:58:11,127 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 16:58:11,129 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 16:58:11,129 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 16:58:11,129 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 16:58:11,129 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 16:58:11,129 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 16:58:11,130 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 16:58:11,130 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 16:58:11,130 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 16:58:11,130 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 16:58:11,130 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 16:58:11,130 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 16:58:11,131 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 16:58:11,131 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 16:58:11,131 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 16:58:11,131 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 16:58:11,131 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 16:58:11,132 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 16:58:11,132 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 16:58:11,132 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 16:58:11,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:58:11,132 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 16:58:11,133 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 16:58:11,133 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 16:58:11,133 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 16:58:11,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 16:58:11,133 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 16:58:11,133 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 16:58:11,134 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 16:58:11,457 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 16:58:11,474 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 16:58:11,478 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 16:58:11,479 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 16:58:11,480 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 16:58:11,480 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/half.i [2020-08-22 16:58:11,545 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed4a6bf4e/03963b4f306c4952a3349ab0098de1e5/FLAGf0ba599d9 [2020-08-22 16:58:11,981 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 16:58:11,981 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/half.i [2020-08-22 16:58:11,990 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed4a6bf4e/03963b4f306c4952a3349ab0098de1e5/FLAGf0ba599d9 [2020-08-22 16:58:12,415 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed4a6bf4e/03963b4f306c4952a3349ab0098de1e5 [2020-08-22 16:58:12,425 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 16:58:12,427 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 16:58:12,428 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 16:58:12,428 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 16:58:12,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 16:58:12,433 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:58:12" (1/1) ... [2020-08-22 16:58:12,436 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@327c857d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:58:12, skipping insertion in model container [2020-08-22 16:58:12,436 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:58:12" (1/1) ... [2020-08-22 16:58:12,444 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 16:58:12,461 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 16:58:12,634 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:58:12,639 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 16:58:12,656 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:58:12,670 INFO L208 MainTranslator]: Completed translation [2020-08-22 16:58:12,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:58:12 WrapperNode [2020-08-22 16:58:12,670 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 16:58:12,671 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 16:58:12,671 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 16:58:12,672 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 16:58:12,682 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:58:12" (1/1) ... [2020-08-22 16:58:12,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:58:12" (1/1) ... [2020-08-22 16:58:12,767 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:58:12" (1/1) ... [2020-08-22 16:58:12,767 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:58:12" (1/1) ... [2020-08-22 16:58:12,776 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:58:12" (1/1) ... [2020-08-22 16:58:12,781 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:58:12" (1/1) ... [2020-08-22 16:58:12,787 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:58:12" (1/1) ... [2020-08-22 16:58:12,789 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 16:58:12,789 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 16:58:12,795 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 16:58:12,795 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 16:58:12,796 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:58:12" (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 [2020-08-22 16:58:12,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 16:58:12,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 16:58:12,857 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 16:58:12,857 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 16:58:12,857 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 16:58:12,857 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 16:58:12,857 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 16:58:12,858 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 16:58:12,858 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 16:58:12,858 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 16:58:12,858 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 16:58:12,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 16:58:12,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 16:58:13,093 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 16:58:13,093 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 16:58:13,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:58:13 BoogieIcfgContainer [2020-08-22 16:58:13,097 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 16:58:13,098 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 16:58:13,098 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 16:58:13,102 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 16:58:13,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:58:12" (1/3) ... [2020-08-22 16:58:13,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@578e4877 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:58:13, skipping insertion in model container [2020-08-22 16:58:13,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:58:12" (2/3) ... [2020-08-22 16:58:13,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@578e4877 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:58:13, skipping insertion in model container [2020-08-22 16:58:13,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:58:13" (3/3) ... [2020-08-22 16:58:13,107 INFO L109 eAbstractionObserver]: Analyzing ICFG half.i [2020-08-22 16:58:13,117 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 16:58:13,124 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 16:58:13,137 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 16:58:13,158 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 16:58:13,158 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 16:58:13,159 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 16:58:13,159 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 16:58:13,159 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 16:58:13,159 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 16:58:13,159 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 16:58:13,159 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 16:58:13,174 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-08-22 16:58:13,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-08-22 16:58:13,180 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:58:13,180 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:58:13,181 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:58:13,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:58:13,185 INFO L82 PathProgramCache]: Analyzing trace with hash -961315073, now seen corresponding path program 1 times [2020-08-22 16:58:13,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:58:13,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783391081] [2020-08-22 16:58:13,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:58:13,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:13,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:58:13,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:13,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:58:13,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783391081] [2020-08-22 16:58:13,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:58:13,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-08-22 16:58:13,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725029692] [2020-08-22 16:58:13,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-08-22 16:58:13,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:58:13,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-08-22 16:58:13,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-08-22 16:58:13,317 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2020-08-22 16:58:13,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:58:13,336 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2020-08-22 16:58:13,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-08-22 16:58:13,338 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-08-22 16:58:13,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:58:13,346 INFO L225 Difference]: With dead ends: 33 [2020-08-22 16:58:13,347 INFO L226 Difference]: Without dead ends: 14 [2020-08-22 16:58:13,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-08-22 16:58:13,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-08-22 16:58:13,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-08-22 16:58:13,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-08-22 16:58:13,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2020-08-22 16:58:13,381 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2020-08-22 16:58:13,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:58:13,382 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2020-08-22 16:58:13,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-08-22 16:58:13,383 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2020-08-22 16:58:13,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-08-22 16:58:13,383 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:58:13,384 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:58:13,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 16:58:13,384 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:58:13,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:58:13,385 INFO L82 PathProgramCache]: Analyzing trace with hash -971473804, now seen corresponding path program 1 times [2020-08-22 16:58:13,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:58:13,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226445555] [2020-08-22 16:58:13,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:58:13,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:13,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:58:13,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:13,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:58:13,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226445555] [2020-08-22 16:58:13,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:58:13,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 16:58:13,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508916405] [2020-08-22 16:58:13,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 16:58:13,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:58:13,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 16:58:13,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-22 16:58:13,581 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 7 states. [2020-08-22 16:58:13,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:58:13,792 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2020-08-22 16:58:13,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 16:58:13,793 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-08-22 16:58:13,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:58:13,797 INFO L225 Difference]: With dead ends: 26 [2020-08-22 16:58:13,797 INFO L226 Difference]: Without dead ends: 21 [2020-08-22 16:58:13,798 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-08-22 16:58:13,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-08-22 16:58:13,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 15. [2020-08-22 16:58:13,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-08-22 16:58:13,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-08-22 16:58:13,807 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2020-08-22 16:58:13,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:58:13,807 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-08-22 16:58:13,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 16:58:13,808 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-08-22 16:58:13,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-22 16:58:13,808 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:58:13,809 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:58:13,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 16:58:13,810 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:58:13,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:58:13,811 INFO L82 PathProgramCache]: Analyzing trace with hash -18708286, now seen corresponding path program 1 times [2020-08-22 16:58:13,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:58:13,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681081550] [2020-08-22 16:58:13,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:58:13,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:13,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:58:13,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:13,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:58:13,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681081550] [2020-08-22 16:58:13,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467929564] [2020-08-22 16:58:13,979 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 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:58:14,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:14,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 9 conjunts are in the unsatisfiable core [2020-08-22 16:58:14,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:58:14,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:58:14,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:58:14,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2020-08-22 16:58:14,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052917763] [2020-08-22 16:58:14,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 16:58:14,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:58:14,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 16:58:14,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-08-22 16:58:14,178 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 11 states. [2020-08-22 16:58:14,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:58:14,271 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2020-08-22 16:58:14,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 16:58:14,283 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-08-22 16:58:14,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:58:14,284 INFO L225 Difference]: With dead ends: 31 [2020-08-22 16:58:14,284 INFO L226 Difference]: Without dead ends: 23 [2020-08-22 16:58:14,285 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-08-22 16:58:14,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-08-22 16:58:14,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 18. [2020-08-22 16:58:14,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-08-22 16:58:14,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-08-22 16:58:14,291 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 14 [2020-08-22 16:58:14,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:58:14,291 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-08-22 16:58:14,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 16:58:14,291 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-08-22 16:58:14,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-22 16:58:14,292 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:58:14,292 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:58:14,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-08-22 16:58:14,507 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:58:14,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:58:14,508 INFO L82 PathProgramCache]: Analyzing trace with hash 154986550, now seen corresponding path program 1 times [2020-08-22 16:58:14,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:58:14,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634477693] [2020-08-22 16:58:14,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:58:14,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:14,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:58:14,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:14,797 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:58:14,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634477693] [2020-08-22 16:58:14,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917191299] [2020-08-22 16:58:14,798 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 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:58:14,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:58:14,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 14 conjunts are in the unsatisfiable core [2020-08-22 16:58:14,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:58:15,021 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:58:15,025 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:58:15,029 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:58:15,074 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:58:15,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:58:15,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2020-08-22 16:58:15,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266991707] [2020-08-22 16:58:15,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-22 16:58:15,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:58:15,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-22 16:58:15,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2020-08-22 16:58:15,077 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 19 states. [2020-08-22 16:58:15,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:58:15,353 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2020-08-22 16:58:15,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 16:58:15,353 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 17 [2020-08-22 16:58:15,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:58:15,354 INFO L225 Difference]: With dead ends: 34 [2020-08-22 16:58:15,354 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 16:58:15,355 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2020-08-22 16:58:15,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 16:58:15,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 16:58:15,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 16:58:15,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 16:58:15,356 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-08-22 16:58:15,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:58:15,357 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 16:58:15,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-22 16:58:15,357 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 16:58:15,357 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 16:58:15,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:58:15,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 16:58:15,722 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-22 16:58:15,722 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-22 16:58:15,723 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-22 16:58:15,723 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 16:58:15,723 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 16:58:15,723 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-22 16:58:15,723 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-08-22 16:58:15,723 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-08-22 16:58:15,724 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-08-22 16:58:15,724 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-08-22 16:58:15,724 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 25) the Hoare annotation is: true [2020-08-22 16:58:15,724 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 25) no Hoare annotation was computed. [2020-08-22 16:58:15,724 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-08-22 16:58:15,725 INFO L268 CegarLoopResult]: For program point L19(lines 19 21) no Hoare annotation was computed. [2020-08-22 16:58:15,725 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-08-22 16:58:15,725 INFO L268 CegarLoopResult]: For program point L18-2(lines 18 22) no Hoare annotation was computed. [2020-08-22 16:58:15,725 INFO L264 CegarLoopResult]: At program point L18-3(lines 18 22) the Hoare annotation is: (let ((.cse0 (* 2 main_~n~0))) (let ((.cse2 (<= main_~i~0 .cse0))) (or (let ((.cse1 (+ main_~i~0 1))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (<= .cse1 (* 2 main_~k~0)))) (and (<= main_~n~0 0) (= main_~i~0 0) .cse2) (and (<= .cse0 main_~i~0) .cse2 (< main_~n~0 (+ main_~k~0 1)))))) [2020-08-22 16:58:15,726 INFO L264 CegarLoopResult]: At program point L18-4(lines 18 22) the Hoare annotation is: (let ((.cse2 (* 2 main_~n~0))) (let ((.cse0 (<= main_~i~0 .cse2)) (.cse1 (<= main_~k~0 main_~n~0))) (or (and (<= 0 main_~n~0) (<= main_~n~0 0) .cse0 .cse1) (and (<= .cse2 main_~i~0) .cse0 .cse1 (< main_~n~0 (+ main_~k~0 1)))))) [2020-08-22 16:58:15,726 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 25) no Hoare annotation was computed. [2020-08-22 16:58:15,726 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-08-22 16:58:15,726 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-08-22 16:58:15,727 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-08-22 16:58:15,727 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-08-22 16:58:15,727 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-08-22 16:58:15,727 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-08-22 16:58:15,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:58:15 BoogieIcfgContainer [2020-08-22 16:58:15,747 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 16:58:15,750 INFO L168 Benchmark]: Toolchain (without parser) took 3321.71 ms. Allocated memory was 140.5 MB in the beginning and 234.4 MB in the end (delta: 93.8 MB). Free memory was 104.0 MB in the beginning and 88.1 MB in the end (delta: 15.9 MB). Peak memory consumption was 109.8 MB. Max. memory is 7.1 GB. [2020-08-22 16:58:15,751 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 16:58:15,752 INFO L168 Benchmark]: CACSL2BoogieTranslator took 242.69 ms. Allocated memory is still 140.5 MB. Free memory was 103.6 MB in the beginning and 94.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-08-22 16:58:15,753 INFO L168 Benchmark]: Boogie Preprocessor took 117.89 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 94.2 MB in the beginning and 181.8 MB in the end (delta: -87.6 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-08-22 16:58:15,754 INFO L168 Benchmark]: RCFGBuilder took 307.70 ms. Allocated memory is still 203.4 MB. Free memory was 181.1 MB in the beginning and 169.0 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. [2020-08-22 16:58:15,755 INFO L168 Benchmark]: TraceAbstraction took 2648.39 ms. Allocated memory was 203.4 MB in the beginning and 234.4 MB in the end (delta: 30.9 MB). Free memory was 168.3 MB in the beginning and 88.1 MB in the end (delta: 80.2 MB). Peak memory consumption was 111.1 MB. Max. memory is 7.1 GB. [2020-08-22 16:58:15,760 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 242.69 ms. Allocated memory is still 140.5 MB. Free memory was 103.6 MB in the beginning and 94.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.89 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 94.2 MB in the beginning and 181.8 MB in the end (delta: -87.6 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 307.70 ms. Allocated memory is still 203.4 MB. Free memory was 181.1 MB in the beginning and 169.0 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2648.39 ms. Allocated memory was 203.4 MB in the beginning and 234.4 MB in the end (delta: 30.9 MB). Free memory was 168.3 MB in the beginning and 88.1 MB in the end (delta: 80.2 MB). Peak memory consumption was 111.1 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: 18]: Loop Invariant Derived loop invariant: (((2 * n <= i + 1 && i + 1 <= 2 * n) && i + 1 <= 2 * k) || ((n <= 0 && i == 0) && i <= 2 * n)) || ((2 * n <= i && i <= 2 * n) && n < k + 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.4s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 51 SDtfs, 37 SDslu, 170 SDs, 0 SdLazy, 211 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 75 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 12 PreInvPairs, 20 NumberOfFragments, 91 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 89 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 5917 SizeOfPredicates, 6 NumberOfNonLiveVariables, 82 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 0/12 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...