/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-acceleration/multivar_1-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 23:11:24,444 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 23:11:24,449 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 23:11:24,488 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 23:11:24,489 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 23:11:24,496 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 23:11:24,500 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 23:11:24,503 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 23:11:24,506 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 23:11:24,509 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 23:11:24,510 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 23:11:24,511 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 23:11:24,511 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 23:11:24,514 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 23:11:24,516 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 23:11:24,518 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 23:11:24,520 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 23:11:24,521 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 23:11:24,522 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 23:11:24,530 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 23:11:24,533 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 23:11:24,534 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 23:11:24,535 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 23:11:24,536 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 23:11:24,553 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 23:11:24,553 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 23:11:24,553 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 23:11:24,557 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 23:11:24,557 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 23:11:24,561 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 23:11:24,561 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 23:11:24,562 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 23:11:24,563 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 23:11:24,564 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 23:11:24,565 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 23:11:24,565 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 23:11:24,568 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 23:11:24,568 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 23:11:24,569 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 23:11:24,570 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 23:11:24,570 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 23:11:24,571 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 23:11:24,588 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 23:11:24,588 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 23:11:24,590 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 23:11:24,590 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 23:11:24,590 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 23:11:24,591 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 23:11:24,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 23:11:24,591 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 23:11:24,591 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 23:11:24,591 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 23:11:24,592 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 23:11:24,593 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 23:11:24,593 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 23:11:24,593 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 23:11:24,593 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 23:11:24,594 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 23:11:24,594 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 23:11:24,594 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 23:11:24,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 23:11:24,595 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 23:11:24,595 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 23:11:24,595 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 23:11:24,595 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 [2020-09-04 23:11:25,004 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 23:11:25,025 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 23:11:25,032 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 23:11:25,034 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 23:11:25,034 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 23:11:25,035 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/multivar_1-1.c [2020-09-04 23:11:25,115 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/78e25ee1a/142a8671b0a24a8ca26a2ba90e595ab2/FLAGedaee16d1 [2020-09-04 23:11:25,598 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 23:11:25,599 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-acceleration/multivar_1-1.c [2020-09-04 23:11:25,607 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/78e25ee1a/142a8671b0a24a8ca26a2ba90e595ab2/FLAGedaee16d1 [2020-09-04 23:11:25,994 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/78e25ee1a/142a8671b0a24a8ca26a2ba90e595ab2 [2020-09-04 23:11:26,006 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 23:11:26,008 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 23:11:26,009 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 23:11:26,009 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 23:11:26,013 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 23:11:26,014 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 11:11:25" (1/1) ... [2020-09-04 23:11:26,018 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@92e95d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:11:26, skipping insertion in model container [2020-09-04 23:11:26,019 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 11:11:25" (1/1) ... [2020-09-04 23:11:26,028 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 23:11:26,054 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 23:11:26,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 23:11:26,289 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 23:11:26,307 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 23:11:26,325 INFO L208 MainTranslator]: Completed translation [2020-09-04 23:11:26,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:11:26 WrapperNode [2020-09-04 23:11:26,326 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 23:11:26,327 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 23:11:26,327 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 23:11:26,327 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 23:11:26,344 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:11:26" (1/1) ... [2020-09-04 23:11:26,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:11:26" (1/1) ... [2020-09-04 23:11:26,457 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:11:26" (1/1) ... [2020-09-04 23:11:26,457 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:11:26" (1/1) ... [2020-09-04 23:11:26,461 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:11:26" (1/1) ... [2020-09-04 23:11:26,467 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:11:26" (1/1) ... [2020-09-04 23:11:26,468 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:11:26" (1/1) ... [2020-09-04 23:11:26,470 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 23:11:26,470 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 23:11:26,470 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 23:11:26,470 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 23:11:26,471 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:11:26" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 23:11:26,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 23:11:26,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 23:11:26,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 23:11:26,559 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 23:11:26,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 23:11:26,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-04 23:11:26,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 23:11:26,559 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 23:11:26,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 23:11:26,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 23:11:26,750 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 23:11:26,750 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-04 23:11:26,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 11:11:26 BoogieIcfgContainer [2020-09-04 23:11:26,755 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 23:11:26,756 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 23:11:26,757 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 23:11:26,760 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 23:11:26,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 11:11:25" (1/3) ... [2020-09-04 23:11:26,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e4dfacc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 11:11:26, skipping insertion in model container [2020-09-04 23:11:26,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:11:26" (2/3) ... [2020-09-04 23:11:26,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e4dfacc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 11:11:26, skipping insertion in model container [2020-09-04 23:11:26,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 11:11:26" (3/3) ... [2020-09-04 23:11:26,766 INFO L109 eAbstractionObserver]: Analyzing ICFG multivar_1-1.c [2020-09-04 23:11:26,778 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 23:11:26,787 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 23:11:26,810 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 23:11:26,838 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 23:11:26,838 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 23:11:26,838 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-04 23:11:26,838 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 23:11:26,839 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 23:11:26,839 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 23:11:26,839 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 23:11:26,839 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 23:11:26,856 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-09-04 23:11:26,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-04 23:11:26,869 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:11:26,870 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:11:26,871 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:11:26,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:11:26,879 INFO L82 PathProgramCache]: Analyzing trace with hash 677098305, now seen corresponding path program 1 times [2020-09-04 23:11:26,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:11:26,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1418229617] [2020-09-04 23:11:26,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:11:26,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:11:27,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:11:27,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:11:27,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:11:27,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1418229617] [2020-09-04 23:11:27,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 23:11:27,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-04 23:11:27,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421764442] [2020-09-04 23:11:27,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-04 23:11:27,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:11:27,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-04 23:11:27,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-04 23:11:27,054 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2020-09-04 23:11:27,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:11:27,084 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2020-09-04 23:11:27,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-04 23:11:27,086 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-09-04 23:11:27,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:11:27,096 INFO L225 Difference]: With dead ends: 36 [2020-09-04 23:11:27,096 INFO L226 Difference]: Without dead ends: 19 [2020-09-04 23:11:27,101 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-04 23:11:27,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-09-04 23:11:27,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-09-04 23:11:27,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-09-04 23:11:27,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-09-04 23:11:27,148 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 12 [2020-09-04 23:11:27,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:11:27,148 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-09-04 23:11:27,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-04 23:11:27,149 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-09-04 23:11:27,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-04 23:11:27,150 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:11:27,150 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:11:27,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 23:11:27,150 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:11:27,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:11:27,151 INFO L82 PathProgramCache]: Analyzing trace with hash 667863095, now seen corresponding path program 1 times [2020-09-04 23:11:27,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:11:27,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656273359] [2020-09-04 23:11:27,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:11:27,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:11:27,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:11:27,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:11:27,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:11:27,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1656273359] [2020-09-04 23:11:27,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 23:11:27,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 23:11:27,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761322979] [2020-09-04 23:11:27,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 23:11:27,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:11:27,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 23:11:27,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 23:11:27,339 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 5 states. [2020-09-04 23:11:27,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:11:27,410 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-09-04 23:11:27,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 23:11:27,411 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-04 23:11:27,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:11:27,413 INFO L225 Difference]: With dead ends: 27 [2020-09-04 23:11:27,413 INFO L226 Difference]: Without dead ends: 22 [2020-09-04 23:11:27,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-04 23:11:27,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-09-04 23:11:27,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2020-09-04 23:11:27,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-09-04 23:11:27,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-09-04 23:11:27,424 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 12 [2020-09-04 23:11:27,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:11:27,424 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-09-04 23:11:27,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 23:11:27,425 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-09-04 23:11:27,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-04 23:11:27,426 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:11:27,426 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:11:27,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 23:11:27,427 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:11:27,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:11:27,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1021038377, now seen corresponding path program 1 times [2020-09-04 23:11:27,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:11:27,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026886694] [2020-09-04 23:11:27,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:11:27,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:11:28,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:11:28,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:11:28,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:11:28,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026886694] [2020-09-04 23:11:28,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:11:28,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-04 23:11:28,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688477352] [2020-09-04 23:11:28,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 23:11:28,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:11:28,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 23:11:28,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-09-04 23:11:28,057 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 11 states. [2020-09-04 23:11:28,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:11:28,473 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2020-09-04 23:11:28,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-04 23:11:28,473 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2020-09-04 23:11:28,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:11:28,475 INFO L225 Difference]: With dead ends: 34 [2020-09-04 23:11:28,475 INFO L226 Difference]: Without dead ends: 29 [2020-09-04 23:11:28,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2020-09-04 23:11:28,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-09-04 23:11:28,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2020-09-04 23:11:28,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-09-04 23:11:28,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-09-04 23:11:28,499 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 19 [2020-09-04 23:11:28,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:11:28,500 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-09-04 23:11:28,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 23:11:28,500 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-09-04 23:11:28,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-04 23:11:28,503 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:11:28,503 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:11:28,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 23:11:28,504 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:11:28,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:11:28,505 INFO L82 PathProgramCache]: Analyzing trace with hash 354800695, now seen corresponding path program 2 times [2020-09-04 23:11:28,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:11:28,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [9121420] [2020-09-04 23:11:28,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:11:28,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:11:28,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:11:28,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:11:28,683 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-04 23:11:28,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [9121420] [2020-09-04 23:11:28,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 23:11:28,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 23:11:28,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323324599] [2020-09-04 23:11:28,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 23:11:28,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:11:28,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 23:11:28,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-04 23:11:28,686 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 8 states. [2020-09-04 23:11:28,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:11:28,794 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-09-04 23:11:28,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-04 23:11:28,795 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-09-04 23:11:28,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:11:28,796 INFO L225 Difference]: With dead ends: 27 [2020-09-04 23:11:28,796 INFO L226 Difference]: Without dead ends: 0 [2020-09-04 23:11:28,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-09-04 23:11:28,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-04 23:11:28,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-04 23:11:28,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-04 23:11:28,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-04 23:11:28,798 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2020-09-04 23:11:28,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:11:28,798 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-04 23:11:28,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 23:11:28,799 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-04 23:11:28,799 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-04 23:11:28,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 23:11:28,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-04 23:11:28,981 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-04 23:11:28,981 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-09-04 23:11:28,981 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-09-04 23:11:28,981 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-04 23:11:28,981 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-04 23:11:28,981 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-09-04 23:11:28,982 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 21) the Hoare annotation is: true [2020-09-04 23:11:28,982 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 11 21) the Hoare annotation is: true [2020-09-04 23:11:28,982 INFO L264 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: (let ((.cse0 (+ main_~y~0 1))) (and (<= .cse0 main_~x~0) (<= main_~x~0 .cse0))) [2020-09-04 23:11:28,983 INFO L264 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (= main_~y~0 main_~x~0) [2020-09-04 23:11:28,983 INFO L264 CegarLoopResult]: At program point L17-1(line 17) the Hoare annotation is: (let ((.cse0 (+ |main_#t~post2| 1)) (.cse1 (+ main_~y~0 1))) (and (<= .cse0 main_~x~0) (<= main_~x~0 .cse0) (<= .cse1 main_~x~0) (<= main_~x~0 .cse1))) [2020-09-04 23:11:28,983 INFO L264 CegarLoopResult]: At program point L16-1(line 16) the Hoare annotation is: (and (<= |main_#t~post1| main_~y~0) (= main_~y~0 main_~x~0) (<= main_~y~0 |main_#t~post1|)) [2020-09-04 23:11:28,983 INFO L264 CegarLoopResult]: At program point L17-2(line 17) the Hoare annotation is: (let ((.cse0 (+ |main_#t~post2| 1))) (and (<= .cse0 main_~x~0) (<= main_~x~0 .cse0) (= main_~y~0 main_~x~0))) [2020-09-04 23:11:28,984 INFO L264 CegarLoopResult]: At program point L16-2(line 16) the Hoare annotation is: (let ((.cse0 (+ main_~y~0 1))) (and (<= |main_#t~post1| main_~y~0) (<= .cse0 main_~x~0) (<= main_~x~0 .cse0) (<= main_~y~0 |main_#t~post1|))) [2020-09-04 23:11:28,984 INFO L271 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: true [2020-09-04 23:11:28,984 INFO L264 CegarLoopResult]: At program point L15-2(lines 15 18) the Hoare annotation is: (= main_~y~0 main_~x~0) [2020-09-04 23:11:28,984 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 11 21) the Hoare annotation is: true [2020-09-04 23:11:28,984 INFO L271 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: true [2020-09-04 23:11:28,985 INFO L264 CegarLoopResult]: At program point L15-3(lines 15 18) the Hoare annotation is: (let ((.cse1 (+ main_~y~0 (* 4294967296 (div main_~x~0 4294967296)))) (.cse0 (+ main_~x~0 (* 4294967296 (div main_~y~0 4294967296))))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2020-09-04 23:11:28,985 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true [2020-09-04 23:11:28,985 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 4 9) the Hoare annotation is: true [2020-09-04 23:11:28,985 INFO L264 CegarLoopResult]: At program point L6(line 6) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-09-04 23:11:28,986 INFO L264 CegarLoopResult]: At program point L5(lines 5 7) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-09-04 23:11:28,986 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-09-04 23:11:28,986 INFO L271 CegarLoopResult]: At program point L5-2(lines 4 9) the Hoare annotation is: true [2020-09-04 23:11:29,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 11:11:29 BoogieIcfgContainer [2020-09-04 23:11:29,010 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 23:11:29,014 INFO L168 Benchmark]: Toolchain (without parser) took 3004.96 ms. Allocated memory was 138.4 MB in the beginning and 234.9 MB in the end (delta: 96.5 MB). Free memory was 101.9 MB in the beginning and 145.6 MB in the end (delta: -43.8 MB). Peak memory consumption was 52.7 MB. Max. memory is 7.1 GB. [2020-09-04 23:11:29,015 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 138.4 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-09-04 23:11:29,016 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.89 ms. Allocated memory is still 138.4 MB. Free memory was 101.7 MB in the beginning and 92.3 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-09-04 23:11:29,018 INFO L168 Benchmark]: Boogie Preprocessor took 142.97 ms. Allocated memory was 138.4 MB in the beginning and 204.5 MB in the end (delta: 66.1 MB). Free memory was 92.3 MB in the beginning and 182.9 MB in the end (delta: -90.5 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2020-09-04 23:11:29,019 INFO L168 Benchmark]: RCFGBuilder took 285.27 ms. Allocated memory is still 204.5 MB. Free memory was 182.9 MB in the beginning and 171.3 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. [2020-09-04 23:11:29,020 INFO L168 Benchmark]: TraceAbstraction took 2253.99 ms. Allocated memory was 204.5 MB in the beginning and 234.9 MB in the end (delta: 30.4 MB). Free memory was 170.6 MB in the beginning and 145.6 MB in the end (delta: 25.0 MB). Peak memory consumption was 55.4 MB. Max. memory is 7.1 GB. [2020-09-04 23:11:29,024 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 138.4 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 317.89 ms. Allocated memory is still 138.4 MB. Free memory was 101.7 MB in the beginning and 92.3 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 142.97 ms. Allocated memory was 138.4 MB in the beginning and 204.5 MB in the end (delta: 66.1 MB). Free memory was 92.3 MB in the beginning and 182.9 MB in the end (delta: -90.5 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 285.27 ms. Allocated memory is still 204.5 MB. Free memory was 182.9 MB in the beginning and 171.3 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2253.99 ms. Allocated memory was 204.5 MB in the beginning and 234.9 MB in the end (delta: 30.4 MB). Free memory was 170.6 MB in the beginning and 145.6 MB in the end (delta: 25.0 MB). Peak memory consumption was 55.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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: 15]: Loop Invariant Derived loop invariant: y == x - ProcedureContractResult [Line: 11]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 4]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.9s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 62 SDtfs, 14 SDslu, 158 SDs, 0 SdLazy, 138 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 19 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 25 LocationsWithAnnotation, 43 PreInvPairs, 64 NumberOfFragments, 138 HoareAnnotationTreeSize, 43 FomulaSimplifications, 336 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 25 FomulaSimplificationsInter, 12 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 65 ConstructedInterpolants, 0 QuantifiedInterpolants, 7845 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 9/10 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...