/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector-regression/signextension-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 22:02:37,581 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-07-21 22:02:37,608 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 22:02:37,609 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 22:02:37,610 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 22:02:37,611 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 22:02:37,612 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 22:02:37,613 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 22:02:37,614 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 22:02:37,616 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 22:02:37,618 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 22:02:37,619 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 22:02:37,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 22:02:37,621 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 22:02:37,623 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 22:02:37,633 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 22:02:37,649 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 22:02:37,650 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 22:02:37,651 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 22:02:37,651 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 22:02:37,651 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 22:02:37,652 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 22:02:37,652 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 22:02:37,652 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 22:02:37,652 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 22:02:37,652 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 22:02:37,652 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 22:02:37,653 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 22:02:37,653 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 22:02:37,653 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 22:02:37,653 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 22:02:37,653 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 22:02:37,654 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 22:02:37,654 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 22:02:37,654 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 22:02:37,654 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 22:02:37,654 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 22:02:37,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 22:02:37,655 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 22:02:37,655 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 22:02:37,655 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 22:02:37,655 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 22:02:37,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:02:37,656 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 22:02:37,656 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 22:02:37,656 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-21 22:02:37,923 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 22:02:37,935 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 22:02:37,938 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 22:02:37,940 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 22:02:37,940 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 22:02:37,941 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector-regression/signextension-2.c [2020-07-21 22:02:38,003 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d4a882e0/264aaaeb2ae94c98a14ac61701baa41b/FLAGa15fa3376 [2020-07-21 22:02:38,425 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 22:02:38,426 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector-regression/signextension-2.c [2020-07-21 22:02:38,432 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d4a882e0/264aaaeb2ae94c98a14ac61701baa41b/FLAGa15fa3376 [2020-07-21 22:02:38,836 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d4a882e0/264aaaeb2ae94c98a14ac61701baa41b [2020-07-21 22:02:38,849 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 22:02:38,852 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 22:02:38,852 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 22:02:38,853 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 22:02:38,857 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 22:02:38,858 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:02:38" (1/1) ... [2020-07-21 22:02:38,861 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@125eb49d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:38, skipping insertion in model container [2020-07-21 22:02:38,861 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:02:38" (1/1) ... [2020-07-21 22:02:38,868 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 22:02:38,882 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 22:02:39,033 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:02:39,038 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 22:02:39,053 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:02:39,066 INFO L208 MainTranslator]: Completed translation [2020-07-21 22:02:39,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:39 WrapperNode [2020-07-21 22:02:39,067 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 22:02:39,068 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 22:02:39,068 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 22:02:39,068 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 22:02:39,081 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:39" (1/1) ... [2020-07-21 22:02:39,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:39" (1/1) ... [2020-07-21 22:02:39,086 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:39" (1/1) ... [2020-07-21 22:02:39,086 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:39" (1/1) ... [2020-07-21 22:02:39,089 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:39" (1/1) ... [2020-07-21 22:02:39,091 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:39" (1/1) ... [2020-07-21 22:02:39,092 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:39" (1/1) ... [2020-07-21 22:02:39,093 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 22:02:39,094 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 22:02:39,094 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 22:02:39,094 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 22:02:39,095 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 22:02:39,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 22:02:39,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 22:02:39,235 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 22:02:39,235 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 22:02:39,235 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 22:02:39,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 22:02:39,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 22:02:39,369 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 22:02:39,369 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-21 22:02:39,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:02:39 BoogieIcfgContainer [2020-07-21 22:02:39,372 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 22:02:39,373 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 22:02:39,373 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 22:02:39,376 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 22:02:39,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:02:38" (1/3) ... [2020-07-21 22:02:39,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9b20382 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:02:39, skipping insertion in model container [2020-07-21 22:02:39,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:39" (2/3) ... [2020-07-21 22:02:39,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9b20382 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:02:39, skipping insertion in model container [2020-07-21 22:02:39,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:02:39" (3/3) ... [2020-07-21 22:02:39,379 INFO L109 eAbstractionObserver]: Analyzing ICFG signextension-2.c [2020-07-21 22:02:39,389 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 22:02:39,395 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 22:02:39,405 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 22:02:39,426 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 22:02:39,426 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 22:02:39,427 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 22:02:39,427 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 22:02:39,427 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 22:02:39,427 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 22:02:39,427 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 22:02:39,427 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 22:02:39,445 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-07-21 22:02:39,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-07-21 22:02:39,450 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:02:39,451 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:02:39,452 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:02:39,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:02:39,458 INFO L82 PathProgramCache]: Analyzing trace with hash 408836530, now seen corresponding path program 1 times [2020-07-21 22:02:39,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:02:39,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [522386816] [2020-07-21 22:02:39,466 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:02:39,530 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:02:39,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:02:39,533 WARN L261 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 22:02:39,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:02:39,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:02:39,611 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:02:39,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [522386816] [2020-07-21 22:02:39,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:02:39,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 22:02:39,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001000917] [2020-07-21 22:02:39,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 22:02:39,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:02:39,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 22:02:39,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:02:39,638 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2020-07-21 22:02:39,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:02:39,675 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2020-07-21 22:02:39,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 22:02:39,678 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-07-21 22:02:39,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:02:39,684 INFO L225 Difference]: With dead ends: 16 [2020-07-21 22:02:39,685 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 22:02:39,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:02:39,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 22:02:39,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 22:02:39,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 22:02:39,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 22:02:39,717 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2020-07-21 22:02:39,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:02:39,717 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 22:02:39,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 22:02:39,718 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 22:02:39,718 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 22:02:39,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:02:39,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 22:02:39,981 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-21 22:02:39,981 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 22:02:39,981 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 22:02:39,981 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 22:02:39,982 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 22:02:39,982 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 22:02:39,982 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 25) no Hoare annotation was computed. [2020-07-21 22:02:39,982 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 3 27) the Hoare annotation is: true [2020-07-21 22:02:39,982 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 3 27) no Hoare annotation was computed. [2020-07-21 22:02:39,983 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 3 27) no Hoare annotation was computed. [2020-07-21 22:02:39,983 INFO L264 CegarLoopResult]: At program point L21(lines 3 27) the Hoare annotation is: false [2020-07-21 22:02:39,983 INFO L268 CegarLoopResult]: For program point L19(lines 19 22) no Hoare annotation was computed. [2020-07-21 22:02:39,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 10:02:39 BoogieIcfgContainer [2020-07-21 22:02:39,993 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 22:02:39,996 INFO L168 Benchmark]: Toolchain (without parser) took 1144.71 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 102.3 MB in the beginning and 144.5 MB in the end (delta: -42.1 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. [2020-07-21 22:02:39,997 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 22:02:39,999 INFO L168 Benchmark]: CACSL2BoogieTranslator took 214.96 ms. Allocated memory is still 137.9 MB. Free memory was 101.9 MB in the beginning and 92.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-07-21 22:02:40,000 INFO L168 Benchmark]: Boogie Preprocessor took 25.71 ms. Allocated memory is still 137.9 MB. Free memory was 92.6 MB in the beginning and 91.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-07-21 22:02:40,001 INFO L168 Benchmark]: RCFGBuilder took 278.38 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 91.3 MB in the beginning and 170.3 MB in the end (delta: -79.0 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2020-07-21 22:02:40,002 INFO L168 Benchmark]: TraceAbstraction took 619.92 ms. Allocated memory is still 201.3 MB. Free memory was 169.6 MB in the beginning and 144.5 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. [2020-07-21 22:02:40,007 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 214.96 ms. Allocated memory is still 137.9 MB. Free memory was 101.9 MB in the beginning and 92.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.71 ms. Allocated memory is still 137.9 MB. Free memory was 92.6 MB in the beginning and 91.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 278.38 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 91.3 MB in the beginning and 170.3 MB in the end (delta: -79.0 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 619.92 ms. Allocated memory is still 201.3 MB. Free memory was 169.6 MB in the beginning and 144.5 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: 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: 3]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8 SDtfs, 2 SDslu, 6 SDs, 0 SdLazy, 1 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 5 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 132 SizeOfPredicates, 6 NumberOfNonLiveVariables, 23 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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...