/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-lit/gsv2008.c.i.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 11:33:52,445 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 11:33:52,447 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 11:33:52,459 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 11:33:52,460 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 11:33:52,461 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 11:33:52,462 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 11:33:52,464 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 11:33:52,465 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 11:33:52,466 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 11:33:52,467 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 11:33:52,468 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 11:33:52,469 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 11:33:52,470 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 11:33:52,471 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 11:33:52,472 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 11:33:52,472 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 11:33:52,473 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 11:33:52,475 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 11:33:52,477 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 11:33:52,479 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 11:33:52,480 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 11:33:52,481 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 11:33:52,482 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 11:33:52,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 11:33:52,492 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 11:33:52,493 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 11:33:52,496 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 11:33:52,497 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-07 11:33:52,514 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 11:33:52,515 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 11:33:52,516 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-07 11:33:52,516 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-07 11:33:52,516 INFO L138 SettingsManager]: * Use SBE=true [2020-07-07 11:33:52,516 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 11:33:52,517 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 11:33:52,517 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 11:33:52,517 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 11:33:52,517 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 11:33:52,517 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 11:33:52,517 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 11:33:52,518 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 11:33:52,518 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 11:33:52,518 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 11:33:52,518 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 11:33:52,518 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 11:33:52,519 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 11:33:52,519 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-07 11:33:52,519 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 11:33:52,519 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 11:33:52,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 11:33:52,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 11:33:52,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-07 11:33:52,520 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-07 11:33:52,520 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-07 11:33:52,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-07 11:33:52,520 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 11:33:52,521 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-07 11:33:52,521 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-07 11:33:52,800 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 11:33:52,813 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 11:33:52,816 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 11:33:52,818 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 11:33:52,818 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 11:33:52,819 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+cfa-reducer.c [2020-07-07 11:33:52,879 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3214f5959/4c34c89e90b944cd89f78558ad0c59bf/FLAGbad34c121 [2020-07-07 11:33:53,336 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 11:33:53,337 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+cfa-reducer.c [2020-07-07 11:33:53,345 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3214f5959/4c34c89e90b944cd89f78558ad0c59bf/FLAGbad34c121 [2020-07-07 11:33:53,697 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3214f5959/4c34c89e90b944cd89f78558ad0c59bf [2020-07-07 11:33:53,706 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 11:33:53,708 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 11:33:53,709 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 11:33:53,709 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 11:33:53,712 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 11:33:53,713 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:33:53" (1/1) ... [2020-07-07 11:33:53,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@752db89d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:53, skipping insertion in model container [2020-07-07 11:33:53,717 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:33:53" (1/1) ... [2020-07-07 11:33:53,725 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 11:33:53,749 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 11:33:53,987 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:33:53,992 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 11:33:54,010 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:33:54,026 INFO L208 MainTranslator]: Completed translation [2020-07-07 11:33:54,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:54 WrapperNode [2020-07-07 11:33:54,026 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 11:33:54,027 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 11:33:54,027 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 11:33:54,027 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 11:33:54,041 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:54" (1/1) ... [2020-07-07 11:33:54,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:54" (1/1) ... [2020-07-07 11:33:54,047 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:54" (1/1) ... [2020-07-07 11:33:54,047 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:54" (1/1) ... [2020-07-07 11:33:54,144 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:54" (1/1) ... [2020-07-07 11:33:54,151 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:54" (1/1) ... [2020-07-07 11:33:54,152 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:54" (1/1) ... [2020-07-07 11:33:54,153 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 11:33:54,154 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 11:33:54,154 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 11:33:54,154 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 11:33:54,155 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 11:33:54,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 11:33:54,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 11:33:54,219 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-07 11:33:54,219 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 11:33:54,220 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 11:33:54,220 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-07 11:33:54,220 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-07 11:33:54,220 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-07 11:33:54,220 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 11:33:54,220 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 11:33:54,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 11:33:54,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 11:33:54,408 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 11:33:54,408 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-07 11:33:54,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:33:54 BoogieIcfgContainer [2020-07-07 11:33:54,412 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 11:33:54,413 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 11:33:54,413 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 11:33:54,417 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 11:33:54,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 11:33:53" (1/3) ... [2020-07-07 11:33:54,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32d7bbd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:33:54, skipping insertion in model container [2020-07-07 11:33:54,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:33:54" (2/3) ... [2020-07-07 11:33:54,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32d7bbd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:33:54, skipping insertion in model container [2020-07-07 11:33:54,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:33:54" (3/3) ... [2020-07-07 11:33:54,421 INFO L109 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.v+cfa-reducer.c [2020-07-07 11:33:54,432 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-07 11:33:54,440 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 11:33:54,456 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 11:33:54,482 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 11:33:54,483 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 11:33:54,483 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-07 11:33:54,483 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 11:33:54,483 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 11:33:54,483 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 11:33:54,483 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 11:33:54,484 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 11:33:54,509 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-07-07 11:33:54,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-07 11:33:54,518 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:54,520 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:33:54,520 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:54,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:54,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1330899215, now seen corresponding path program 1 times [2020-07-07 11:33:54,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:54,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813943310] [2020-07-07 11:33:54,544 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:54,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:54,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:54,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:33:54,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813943310] [2020-07-07 11:33:54,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:33:54,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 11:33:54,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092146114] [2020-07-07 11:33:54,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 11:33:54,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:54,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 11:33:54,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:33:54,774 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2020-07-07 11:33:54,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:54,874 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2020-07-07 11:33:54,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-07 11:33:54,876 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-07-07 11:33:54,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:54,884 INFO L225 Difference]: With dead ends: 26 [2020-07-07 11:33:54,884 INFO L226 Difference]: Without dead ends: 13 [2020-07-07 11:33:54,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:33:54,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-07-07 11:33:54,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-07-07 11:33:54,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-07-07 11:33:54,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-07-07 11:33:54,924 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2020-07-07 11:33:54,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:54,925 INFO L479 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-07-07 11:33:54,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 11:33:54,925 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-07-07 11:33:54,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-07 11:33:54,926 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:54,926 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:33:54,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 11:33:54,928 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:54,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:54,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1691859760, now seen corresponding path program 1 times [2020-07-07 11:33:54,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:54,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375924123] [2020-07-07 11:33:54,930 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:54,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:55,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:55,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:33:55,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375924123] [2020-07-07 11:33:55,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650006759] [2020-07-07 11:33:55,031 INFO L94 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 [2020-07-07 11:33:55,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:55,078 INFO L264 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-07 11:33:55,084 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:33:55,125 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:33:55,130 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:33:55,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:33:55,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:33:55,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2020-07-07 11:33:55,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848332314] [2020-07-07 11:33:55,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-07 11:33:55,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:55,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-07 11:33:55,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-07-07 11:33:55,158 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 7 states. [2020-07-07 11:33:55,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:55,235 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2020-07-07 11:33:55,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 11:33:55,235 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-07-07 11:33:55,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:55,236 INFO L225 Difference]: With dead ends: 17 [2020-07-07 11:33:55,236 INFO L226 Difference]: Without dead ends: 14 [2020-07-07 11:33:55,238 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-07-07 11:33:55,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-07-07 11:33:55,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-07-07 11:33:55,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-07-07 11:33:55,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-07-07 11:33:55,243 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2020-07-07 11:33:55,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:55,243 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-07-07 11:33:55,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-07 11:33:55,243 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-07-07 11:33:55,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-07 11:33:55,244 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:55,244 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:33:55,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-07 11:33:55,458 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:55,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:55,458 INFO L82 PathProgramCache]: Analyzing trace with hash -908107473, now seen corresponding path program 2 times [2020-07-07 11:33:55,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:55,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796818229] [2020-07-07 11:33:55,459 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:55,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:55,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:55,549 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:33:55,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796818229] [2020-07-07 11:33:55,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769743499] [2020-07-07 11:33:55,553 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-07-07 11:33:55,602 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-07 11:33:55,603 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:33:55,604 INFO L264 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-07 11:33:55,606 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:33:55,641 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:33:55,645 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:33:55,674 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:33:55,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:33:55,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2020-07-07 11:33:55,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799955738] [2020-07-07 11:33:55,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-07 11:33:55,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:55,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-07 11:33:55,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-07-07 11:33:55,679 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 8 states. [2020-07-07 11:33:55,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:55,800 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-07-07 11:33:55,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-07 11:33:55,801 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-07-07 11:33:55,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:55,802 INFO L225 Difference]: With dead ends: 18 [2020-07-07 11:33:55,802 INFO L226 Difference]: Without dead ends: 15 [2020-07-07 11:33:55,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-07-07 11:33:55,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-07-07 11:33:55,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-07-07 11:33:55,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-07-07 11:33:55,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-07-07 11:33:55,811 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2020-07-07 11:33:55,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:55,811 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-07-07 11:33:55,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-07 11:33:55,812 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-07-07 11:33:55,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-07 11:33:55,813 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:33:55,813 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:33:56,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:33:56,026 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:33:56,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:33:56,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1913376944, now seen corresponding path program 3 times [2020-07-07 11:33:56,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:33:56,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397642498] [2020-07-07 11:33:56,029 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:33:56,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:56,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:33:56,169 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:33:56,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397642498] [2020-07-07 11:33:56,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421502260] [2020-07-07 11:33:56,170 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:33:56,198 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-07-07 11:33:56,199 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:33:56,200 INFO L264 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-07 11:33:56,201 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:33:56,224 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:33:56,226 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:33:56,242 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-07 11:33:56,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-07 11:33:56,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2020-07-07 11:33:56,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955475172] [2020-07-07 11:33:56,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 11:33:56,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:33:56,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 11:33:56,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-07-07 11:33:56,246 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 4 states. [2020-07-07 11:33:56,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:33:56,273 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2020-07-07 11:33:56,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-07 11:33:56,274 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-07-07 11:33:56,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:33:56,274 INFO L225 Difference]: With dead ends: 15 [2020-07-07 11:33:56,275 INFO L226 Difference]: Without dead ends: 0 [2020-07-07 11:33:56,275 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-07-07 11:33:56,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-07 11:33:56,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-07 11:33:56,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-07 11:33:56,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-07 11:33:56,277 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-07-07 11:33:56,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:33:56,277 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-07 11:33:56,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 11:33:56,277 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-07 11:33:56,278 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-07 11:33:56,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:33:56,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-07 11:33:56,547 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-07 11:33:56,548 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__return_main~0 |old(~__return_main~0)|) (= ~__return_65~0 |old(~__return_65~0)|)) [2020-07-07 11:33:56,548 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-07 11:33:56,548 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-07 11:33:56,548 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-07 11:33:56,548 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-07 11:33:56,548 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-07 11:33:56,549 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-07-07 11:33:56,549 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-07-07 11:33:56,549 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 6) no Hoare annotation was computed. [2020-07-07 11:33:56,549 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-07-07 11:33:56,549 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 46) no Hoare annotation was computed. [2020-07-07 11:33:56,549 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 11 58) the Hoare annotation is: (= |old(~__return_65~0)| ~__return_65~0) [2020-07-07 11:33:56,550 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 58) no Hoare annotation was computed. [2020-07-07 11:33:56,550 INFO L268 CegarLoopResult]: For program point L23(lines 23 56) no Hoare annotation was computed. [2020-07-07 11:33:56,550 INFO L268 CegarLoopResult]: For program point L17(lines 17 57) no Hoare annotation was computed. [2020-07-07 11:33:56,550 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-07-07 11:33:56,550 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 11 58) no Hoare annotation was computed. [2020-07-07 11:33:56,550 INFO L268 CegarLoopResult]: For program point L44(lines 44 53) no Hoare annotation was computed. [2020-07-07 11:33:56,551 INFO L264 CegarLoopResult]: At program point L35(lines 28 56) the Hoare annotation is: (let ((.cse0 (= |old(~__return_65~0)| ~__return_65~0))) (or (and (<= (+ main_~main__x~0 50) 0) .cse0) (and (<= (+ main_~main__x~0 2) main_~main__y~0) .cse0))) [2020-07-07 11:33:56,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 11:33:56 BoogieIcfgContainer [2020-07-07 11:33:56,572 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 11:33:56,575 INFO L168 Benchmark]: Toolchain (without parser) took 2866.70 ms. Allocated memory was 142.6 MB in the beginning and 228.6 MB in the end (delta: 86.0 MB). Free memory was 99.9 MB in the beginning and 171.4 MB in the end (delta: -71.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2020-07-07 11:33:56,576 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 142.6 MB. Free memory was 117.6 MB in the beginning and 117.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 11:33:56,577 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.92 ms. Allocated memory is still 142.6 MB. Free memory was 99.7 MB in the beginning and 89.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-07-07 11:33:56,578 INFO L168 Benchmark]: Boogie Preprocessor took 126.45 ms. Allocated memory was 142.6 MB in the beginning and 200.3 MB in the end (delta: 57.7 MB). Free memory was 89.6 MB in the beginning and 179.4 MB in the end (delta: -89.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-07-07 11:33:56,579 INFO L168 Benchmark]: RCFGBuilder took 258.09 ms. Allocated memory is still 200.3 MB. Free memory was 179.4 MB in the beginning and 166.9 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-07-07 11:33:56,580 INFO L168 Benchmark]: TraceAbstraction took 2159.20 ms. Allocated memory was 200.3 MB in the beginning and 228.6 MB in the end (delta: 28.3 MB). Free memory was 166.2 MB in the beginning and 171.4 MB in the end (delta: -5.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2020-07-07 11:33:56,584 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 142.6 MB. Free memory was 117.6 MB in the beginning and 117.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 317.92 ms. Allocated memory is still 142.6 MB. Free memory was 99.7 MB in the beginning and 89.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 126.45 ms. Allocated memory was 142.6 MB in the beginning and 200.3 MB in the end (delta: 57.7 MB). Free memory was 89.6 MB in the beginning and 179.4 MB in the end (delta: -89.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 258.09 ms. Allocated memory is still 200.3 MB. Free memory was 179.4 MB in the beginning and 166.9 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2159.20 ms. Allocated memory was 200.3 MB in the beginning and 228.6 MB in the end (delta: 28.3 MB). Free memory was 166.2 MB in the beginning and 171.4 MB in the end (delta: -5.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 46]: 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: 28]: Loop Invariant Derived loop invariant: (main__x + 50 <= 0 && \old(__return_65) == __return_65) || (main__x + 2 <= main__y && \old(__return_65) == __return_65) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.0s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 44 SDtfs, 32 SDslu, 64 SDs, 0 SdLazy, 78 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 8 NumberOfFragments, 31 HoareAnnotationTreeSize, 5 FomulaSimplifications, 36 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 10 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 89 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 2840 SizeOfPredicates, 12 NumberOfNonLiveVariables, 149 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 6/20 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...