/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 23:05:30,898 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 23:05:30,902 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 23:05:30,956 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-22 23:05:30,987 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 23:05:30,993 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 23:05:30,995 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 23:05:30,999 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 23:05:31,001 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 23:05:31,004 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 23:05:31,008 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 23:05:31,016 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 23:05:31,020 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 23:05:31,021 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 23:05:31,024 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 23:05:31,025 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 23:05:31,030 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 23:05:31,044 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 23:05:31,045 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 23:05:31,047 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 23:05:31,049 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 23:05:31,069 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 23:05:31,070 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 23:05:31,073 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 23:05:31,073 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 23:05:31,073 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 23:05:31,074 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 23:05:31,074 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 23:05:31,074 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 23:05:31,075 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 23:05:31,075 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 23:05:31,076 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 23:05:31,077 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 23:05:31,077 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 23:05:31,077 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 23:05:31,078 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 23:05:31,078 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 23:05:31,078 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 23:05:31,078 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 23:05:31,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 23:05:31,079 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 23:05:31,079 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 23:05:31,079 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 23:05:31,079 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-08-22 23:05:31,433 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 23:05:31,460 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 23:05:31,466 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 23:05:31,468 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 23:05:31,469 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 23:05:31,470 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2020-08-22 23:05:31,573 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd366858d/74273d948548491c9d0bd5d9181f8f74/FLAG7b98e6240 [2020-08-22 23:05:32,170 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 23:05:32,171 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2020-08-22 23:05:32,180 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd366858d/74273d948548491c9d0bd5d9181f8f74/FLAG7b98e6240 [2020-08-22 23:05:32,502 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd366858d/74273d948548491c9d0bd5d9181f8f74 [2020-08-22 23:05:32,515 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 23:05:32,517 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 23:05:32,519 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 23:05:32,519 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 23:05:32,524 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 23:05:32,525 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 11:05:32" (1/1) ... [2020-08-22 23:05:32,529 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@784ce183 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:05:32, skipping insertion in model container [2020-08-22 23:05:32,529 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 11:05:32" (1/1) ... [2020-08-22 23:05:32,539 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 23:05:32,562 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 23:05:32,765 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 23:05:32,772 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 23:05:32,795 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 23:05:32,814 INFO L208 MainTranslator]: Completed translation [2020-08-22 23:05:32,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:05:32 WrapperNode [2020-08-22 23:05:32,815 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 23:05:32,816 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 23:05:32,817 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 23:05:32,817 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 23:05:32,835 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:05:32" (1/1) ... [2020-08-22 23:05:32,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:05:32" (1/1) ... [2020-08-22 23:05:32,843 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:05:32" (1/1) ... [2020-08-22 23:05:32,843 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:05:32" (1/1) ... [2020-08-22 23:05:32,937 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:05:32" (1/1) ... [2020-08-22 23:05:32,940 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:05:32" (1/1) ... [2020-08-22 23:05:32,941 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:05:32" (1/1) ... [2020-08-22 23:05:32,944 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 23:05:32,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 23:05:32,945 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 23:05:32,945 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 23:05:32,946 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:05:32" (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 23:05:33,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 23:05:33,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 23:05:33,025 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 23:05:33,025 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 23:05:33,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 23:05:33,025 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 23:05:33,025 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 23:05:33,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 23:05:33,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 23:05:33,025 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 23:05:33,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 23:05:33,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 23:05:33,340 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 23:05:33,340 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-22 23:05:33,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 11:05:33 BoogieIcfgContainer [2020-08-22 23:05:33,346 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 23:05:33,347 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 23:05:33,348 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 23:05:33,351 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 23:05:33,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 11:05:32" (1/3) ... [2020-08-22 23:05:33,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51e84b6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 11:05:33, skipping insertion in model container [2020-08-22 23:05:33,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:05:32" (2/3) ... [2020-08-22 23:05:33,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51e84b6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 11:05:33, skipping insertion in model container [2020-08-22 23:05:33,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 11:05:33" (3/3) ... [2020-08-22 23:05:33,369 INFO L109 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.v+lhb-reducer.c [2020-08-22 23:05:33,382 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 23:05:33,392 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 23:05:33,410 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 23:05:33,439 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 23:05:33,440 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 23:05:33,440 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 23:05:33,440 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 23:05:33,440 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 23:05:33,441 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 23:05:33,441 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 23:05:33,441 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 23:05:33,460 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-08-22 23:05:33,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-22 23:05:33,475 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:05:33,477 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:05:33,477 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:05:33,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:05:33,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1819653980, now seen corresponding path program 1 times [2020-08-22 23:05:33,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:05:33,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2021857141] [2020-08-22 23:05:33,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:05:33,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:33,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:05:33,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:33,922 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 23:05:33,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2021857141] [2020-08-22 23:05:33,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 23:05:33,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 23:05:33,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564513736] [2020-08-22 23:05:33,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 23:05:33,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:05:33,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 23:05:33,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-22 23:05:33,958 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 9 states. [2020-08-22 23:05:34,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:05:34,448 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2020-08-22 23:05:34,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 23:05:34,451 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-08-22 23:05:34,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:05:34,465 INFO L225 Difference]: With dead ends: 65 [2020-08-22 23:05:34,465 INFO L226 Difference]: Without dead ends: 36 [2020-08-22 23:05:34,470 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2020-08-22 23:05:34,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-08-22 23:05:34,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-08-22 23:05:34,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-08-22 23:05:34,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2020-08-22 23:05:34,534 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 28 [2020-08-22 23:05:34,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:05:34,535 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2020-08-22 23:05:34,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 23:05:34,535 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2020-08-22 23:05:34,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-22 23:05:34,537 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:05:34,537 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:05:34,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 23:05:34,538 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:05:34,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:05:34,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1522824151, now seen corresponding path program 1 times [2020-08-22 23:05:34,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:05:34,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1603730822] [2020-08-22 23:05:34,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:05:34,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:34,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:05:34,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:34,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 23:05:34,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1603730822] [2020-08-22 23:05:34,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:05:34,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-22 23:05:34,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470196157] [2020-08-22 23:05:34,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 23:05:34,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:05:34,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 23:05:34,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-22 23:05:34,840 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 11 states. [2020-08-22 23:05:35,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:05:35,120 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2020-08-22 23:05:35,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 23:05:35,120 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2020-08-22 23:05:35,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:05:35,122 INFO L225 Difference]: With dead ends: 49 [2020-08-22 23:05:35,123 INFO L226 Difference]: Without dead ends: 42 [2020-08-22 23:05:35,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-08-22 23:05:35,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-08-22 23:05:35,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-08-22 23:05:35,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-08-22 23:05:35,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2020-08-22 23:05:35,136 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 34 [2020-08-22 23:05:35,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:05:35,137 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2020-08-22 23:05:35,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 23:05:35,137 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2020-08-22 23:05:35,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-22 23:05:35,139 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:05:35,139 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:05:35,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 23:05:35,140 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:05:35,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:05:35,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1421125650, now seen corresponding path program 2 times [2020-08-22 23:05:35,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:05:35,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997025285] [2020-08-22 23:05:35,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:05:35,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:35,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:05:35,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:35,404 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 23:05:35,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997025285] [2020-08-22 23:05:35,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:05:35,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 23:05:35,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535374621] [2020-08-22 23:05:35,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 23:05:35,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:05:35,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 23:05:35,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-08-22 23:05:35,408 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 13 states. [2020-08-22 23:05:35,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:05:35,752 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2020-08-22 23:05:35,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 23:05:35,753 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 40 [2020-08-22 23:05:35,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:05:35,757 INFO L225 Difference]: With dead ends: 55 [2020-08-22 23:05:35,757 INFO L226 Difference]: Without dead ends: 48 [2020-08-22 23:05:35,761 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-08-22 23:05:35,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-22 23:05:35,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-08-22 23:05:35,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-08-22 23:05:35,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2020-08-22 23:05:35,790 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 40 [2020-08-22 23:05:35,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:05:35,791 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2020-08-22 23:05:35,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 23:05:35,796 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2020-08-22 23:05:35,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 23:05:35,800 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:05:35,800 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:05:35,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 23:05:35,801 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:05:35,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:05:35,801 INFO L82 PathProgramCache]: Analyzing trace with hash -264078349, now seen corresponding path program 3 times [2020-08-22 23:05:35,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:05:35,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [995614249] [2020-08-22 23:05:35,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:05:35,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:35,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:05:35,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:35,928 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-08-22 23:05:35,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [995614249] [2020-08-22 23:05:35,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 23:05:35,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 23:05:35,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001222082] [2020-08-22 23:05:35,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 23:05:35,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:05:35,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 23:05:35,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-22 23:05:35,932 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 9 states. [2020-08-22 23:05:36,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:05:36,170 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2020-08-22 23:05:36,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 23:05:36,170 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 46 [2020-08-22 23:05:36,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:05:36,171 INFO L225 Difference]: With dead ends: 47 [2020-08-22 23:05:36,171 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 23:05:36,173 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2020-08-22 23:05:36,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 23:05:36,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 23:05:36,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 23:05:36,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 23:05:36,174 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 46 [2020-08-22 23:05:36,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:05:36,174 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 23:05:36,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 23:05:36,175 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 23:05:36,175 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 23:05:36,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 23:05:36,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 23:05:36,741 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-22 23:05:36,741 INFO L271 CegarLoopResult]: At program point L11(line 11) the Hoare annotation is: true [2020-08-22 23:05:36,742 INFO L271 CegarLoopResult]: At program point L10(line 10) the Hoare annotation is: true [2020-08-22 23:05:36,742 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= ~__return_main~0 |old(~__return_main~0)|) (= ~__return_65~0 |old(~__return_65~0)|)) [2020-08-22 23:05:36,742 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-08-22 23:05:36,743 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-08-22 23:05:36,743 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 23:05:36,743 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 23:05:36,743 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-08-22 23:05:36,744 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-08-22 23:05:36,744 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-08-22 23:05:36,744 INFO L268 CegarLoopResult]: For program point L5-1(line 5) no Hoare annotation was computed. [2020-08-22 23:05:36,744 INFO L268 CegarLoopResult]: For program point L5-3(lines 4 6) no Hoare annotation was computed. [2020-08-22 23:05:36,745 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-08-22 23:05:36,745 INFO L264 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 50) main_~main__y~0)) [2020-08-22 23:05:36,745 INFO L264 CegarLoopResult]: At program point L60(line 60) the Hoare annotation is: (not (= main_~__VERIFIER_assert__cond~0 0)) [2020-08-22 23:05:36,745 INFO L264 CegarLoopResult]: At program point mainEXIT(lines 12 72) the Hoare annotation is: (or (not (= main_~__VERIFIER_assert__cond~0 0)) (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 50) 0))) [2020-08-22 23:05:36,745 INFO L264 CegarLoopResult]: At program point L56(line 56) the Hoare annotation is: false [2020-08-22 23:05:36,746 INFO L264 CegarLoopResult]: At program point L52(line 52) the Hoare annotation is: (let ((.cse0 (not (= main_~__tmp_1~0 0)))) (or (and (<= 2 main_~main__y~0) .cse0 (<= (+ main_~main__x~0 2) main_~main__y~0)) (and (<= 19 main_~main__y~0) .cse0 (<= (+ main_~main__x~0 56) (* 3 main_~main__y~0))))) [2020-08-22 23:05:36,746 INFO L264 CegarLoopResult]: At program point L50(line 50) the Hoare annotation is: (or (and (<= 19 main_~main__y~0) (<= (+ main_~main__x~0 56) (* 3 main_~main__y~0))) (and (<= 2 main_~main__y~0) (<= (+ main_~main__x~0 2) main_~main__y~0))) [2020-08-22 23:05:36,746 INFO L264 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 50) 0)) [2020-08-22 23:05:36,746 INFO L264 CegarLoopResult]: At program point L17-1(line 17) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 50) 0)) [2020-08-22 23:05:36,747 INFO L264 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0)) [2020-08-22 23:05:36,747 INFO L264 CegarLoopResult]: At program point L17-2(line 17) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 50) 0)) [2020-08-22 23:05:36,747 INFO L264 CegarLoopResult]: At program point mainFINAL(lines 12 72) the Hoare annotation is: (or (not (= main_~__VERIFIER_assert__cond~0 0)) (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 50) 0))) [2020-08-22 23:05:36,747 INFO L264 CegarLoopResult]: At program point L44(lines 31 65) the Hoare annotation is: (<= (+ main_~main__x~0 2) main_~main__y~0) [2020-08-22 23:05:36,748 INFO L264 CegarLoopResult]: At program point L42(line 42) the Hoare annotation is: (<= (+ main_~main__x~0 1) main_~main__y~0) [2020-08-22 23:05:36,748 INFO L264 CegarLoopResult]: At program point L40(line 40) the Hoare annotation is: (and (<= (+ main_~main__x~0 1) 0) (<= (+ main_~main__x~0 2) main_~main__y~0)) [2020-08-22 23:05:36,748 INFO L264 CegarLoopResult]: At program point L38(lines 38 64) the Hoare annotation is: (<= (+ main_~main__x~0 2) main_~main__y~0) [2020-08-22 23:05:36,748 INFO L264 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 50) main_~main__y~0)) [2020-08-22 23:05:36,748 INFO L264 CegarLoopResult]: At program point L32(line 32) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 50) 0)) [2020-08-22 23:05:36,749 INFO L264 CegarLoopResult]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 55) the Hoare annotation is: false [2020-08-22 23:05:36,749 INFO L264 CegarLoopResult]: At program point L30(lines 30 69) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 50) 0)) [2020-08-22 23:05:36,749 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 12 72) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0)) [2020-08-22 23:05:36,750 INFO L264 CegarLoopResult]: At program point L61(line 61) the Hoare annotation is: (not (= main_~__VERIFIER_assert__cond~0 0)) [2020-08-22 23:05:36,750 INFO L264 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 50) 0) (<= 51 main_~main__y~0)) [2020-08-22 23:05:36,750 INFO L264 CegarLoopResult]: At program point L24(lines 24 70) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 50) 0)) [2020-08-22 23:05:36,750 INFO L264 CegarLoopResult]: At program point L55(line 55) the Hoare annotation is: false [2020-08-22 23:05:36,750 INFO L264 CegarLoopResult]: At program point L53(lines 53 62) the Hoare annotation is: (let ((.cse0 (not (= main_~__tmp_1~0 0))) (.cse1 (not (= main_~__VERIFIER_assert__cond~0 0)))) (or (and (<= 2 main_~main__y~0) .cse0 .cse1 (<= (+ main_~main__x~0 2) main_~main__y~0)) (and (<= 19 main_~main__y~0) .cse0 .cse1 (<= (+ main_~main__x~0 56) (* 3 main_~main__y~0))))) [2020-08-22 23:05:36,751 INFO L264 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 50) 0)) [2020-08-22 23:05:36,751 INFO L264 CegarLoopResult]: At program point L51(line 51) the Hoare annotation is: (let ((.cse0 (not (= main_~__tmp_1~0 0)))) (or (and (<= 2 main_~main__y~0) .cse0 (<= (+ main_~main__x~0 2) main_~main__y~0)) (and (<= 19 main_~main__y~0) .cse0 (<= (+ main_~main__x~0 56) (* 3 main_~main__y~0))))) [2020-08-22 23:05:36,751 INFO L264 CegarLoopResult]: At program point L18(lines 18 71) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 50) 0)) [2020-08-22 23:05:36,751 INFO L264 CegarLoopResult]: At program point L49(line 49) the Hoare annotation is: (or (and (<= 19 main_~main__y~0) (<= (+ main_~main__x~0 56) (* 3 main_~main__y~0))) (and (<= 2 main_~main__y~0) (<= (+ main_~main__x~0 2) main_~main__y~0))) [2020-08-22 23:05:36,752 INFO L264 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0)) [2020-08-22 23:05:36,752 INFO L264 CegarLoopResult]: At program point L43(line 43) the Hoare annotation is: (<= (+ main_~main__x~0 2) main_~main__y~0) [2020-08-22 23:05:36,752 INFO L264 CegarLoopResult]: At program point L41(line 41) the Hoare annotation is: (<= (+ main_~main__x~0 1) main_~main__y~0) [2020-08-22 23:05:36,752 INFO L264 CegarLoopResult]: At program point L68(line 68) the Hoare annotation is: false [2020-08-22 23:05:36,752 INFO L264 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 51) main_~main__y~0)) [2020-08-22 23:05:36,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 11:05:36 BoogieIcfgContainer [2020-08-22 23:05:36,777 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 23:05:36,781 INFO L168 Benchmark]: Toolchain (without parser) took 4262.77 ms. Allocated memory was 141.0 MB in the beginning and 243.3 MB in the end (delta: 102.2 MB). Free memory was 104.4 MB in the beginning and 117.4 MB in the end (delta: -13.0 MB). Peak memory consumption was 89.3 MB. Max. memory is 7.1 GB. [2020-08-22 23:05:36,782 INFO L168 Benchmark]: CDTParser took 0.42 ms. Allocated memory is still 141.0 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 23:05:36,783 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.12 ms. Allocated memory is still 141.0 MB. Free memory was 104.2 MB in the beginning and 94.4 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-08-22 23:05:36,784 INFO L168 Benchmark]: Boogie Preprocessor took 127.83 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 94.4 MB in the beginning and 184.2 MB in the end (delta: -89.8 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2020-08-22 23:05:36,785 INFO L168 Benchmark]: RCFGBuilder took 401.47 ms. Allocated memory is still 205.0 MB. Free memory was 184.2 MB in the beginning and 168.9 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. [2020-08-22 23:05:36,787 INFO L168 Benchmark]: TraceAbstraction took 3430.20 ms. Allocated memory was 205.0 MB in the beginning and 243.3 MB in the end (delta: 38.3 MB). Free memory was 168.3 MB in the beginning and 117.4 MB in the end (delta: 50.9 MB). Peak memory consumption was 89.2 MB. Max. memory is 7.1 GB. [2020-08-22 23:05:36,791 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42 ms. Allocated memory is still 141.0 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 297.12 ms. Allocated memory is still 141.0 MB. Free memory was 104.2 MB in the beginning and 94.4 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.83 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 94.4 MB in the beginning and 184.2 MB in the end (delta: -89.8 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 401.47 ms. Allocated memory is still 205.0 MB. Free memory was 184.2 MB in the beginning and 168.9 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3430.20 ms. Allocated memory was 205.0 MB in the beginning and 243.3 MB in the end (delta: 38.3 MB). Free memory was 168.3 MB in the beginning and 117.4 MB in the end (delta: 50.9 MB). Peak memory consumption was 89.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 55]: 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: 31]: Loop Invariant Derived loop invariant: main__x + 2 <= main__y - ProcedureContractResult [Line: 12]: Procedure Contract for main Derived contract for procedure main: !(__VERIFIER_assert__cond == 0) || ((__tmp_55_0 == \old(__tmp_55_0) && \old(__return_65) == __return_65) && main__x + 50 <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 103 SDtfs, 169 SDslu, 351 SDs, 0 SdLazy, 612 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 43 LocationsWithAnnotation, 43 PreInvPairs, 84 NumberOfFragments, 405 HoareAnnotationTreeSize, 43 FomulaSimplifications, 262 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 43 FomulaSimplificationsInter, 269 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 148 NumberOfCodeBlocks, 148 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 144 ConstructedInterpolants, 0 QuantifiedInterpolants, 18216 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 24/36 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...