/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/ldv-regression/volatile_alias.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 22:42:53,105 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-07-21 22:42:53,201 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 22:42:53,234 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 22:42:53,234 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 22:42:53,237 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 22:42:53,237 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 22:42:53,237 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 22:42:53,238 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 22:42:53,238 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 22:42:53,238 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 22:42:53,238 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 22:42:53,238 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 22:42:53,239 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 22:42:53,240 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 22:42:53,240 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 22:42:53,240 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 22:42:53,240 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 22:42:53,240 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 22:42:53,240 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 22:42:53,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 22:42:53,241 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 22:42:53,241 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 22:42:53,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 22:42:53,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 22:42:53,242 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 22:42:53,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 22:42:53,242 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 22:42:53,243 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 22:42:53,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:42:53,243 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 22:42:53,243 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 22:42:53,243 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 22:42:53,603 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 22:42:53,622 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 22:42:53,626 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 22:42:53,628 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 22:42:53,629 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 22:42:53,630 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/volatile_alias.i [2020-07-21 22:42:53,707 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d646cb72/1992664cdb8e4e309091db63f24680cc/FLAG055456742 [2020-07-21 22:42:54,138 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 22:42:54,138 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/volatile_alias.i [2020-07-21 22:42:54,145 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d646cb72/1992664cdb8e4e309091db63f24680cc/FLAG055456742 [2020-07-21 22:42:54,510 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d646cb72/1992664cdb8e4e309091db63f24680cc [2020-07-21 22:42:54,519 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 22:42:54,522 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 22:42:54,523 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 22:42:54,523 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 22:42:54,527 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 22:42:54,528 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:42:54" (1/1) ... [2020-07-21 22:42:54,531 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ac620e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:42:54, skipping insertion in model container [2020-07-21 22:42:54,531 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:42:54" (1/1) ... [2020-07-21 22:42:54,540 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 22:42:54,556 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 22:42:54,729 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:42:54,745 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 22:42:54,765 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:42:54,783 INFO L208 MainTranslator]: Completed translation [2020-07-21 22:42:54,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:42:54 WrapperNode [2020-07-21 22:42:54,784 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 22:42:54,785 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 22:42:54,785 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 22:42:54,785 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 22:42:54,800 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:42:54" (1/1) ... [2020-07-21 22:42:54,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:42:54" (1/1) ... [2020-07-21 22:42:54,971 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:42:54" (1/1) ... [2020-07-21 22:42:54,972 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:42:54" (1/1) ... [2020-07-21 22:42:54,978 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:42:54" (1/1) ... [2020-07-21 22:42:54,980 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:42:54" (1/1) ... [2020-07-21 22:42:54,988 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:42:54" (1/1) ... [2020-07-21 22:42:54,995 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 22:42:54,996 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 22:42:54,996 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 22:42:54,996 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 22:42:54,998 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:42:54" (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 [2020-07-21 22:42:55,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 22:42:55,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 22:42:55,055 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 22:42:55,056 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 22:42:55,056 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 22:42:55,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 22:42:55,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-21 22:42:55,056 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 22:42:55,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 22:42:55,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 22:42:55,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 22:42:55,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 22:42:55,243 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 22:42:55,243 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-21 22:42:55,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:42:55 BoogieIcfgContainer [2020-07-21 22:42:55,248 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 22:42:55,249 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 22:42:55,249 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 22:42:55,253 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 22:42:55,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:42:54" (1/3) ... [2020-07-21 22:42:55,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aa641fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:42:55, skipping insertion in model container [2020-07-21 22:42:55,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:42:54" (2/3) ... [2020-07-21 22:42:55,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aa641fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:42:55, skipping insertion in model container [2020-07-21 22:42:55,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:42:55" (3/3) ... [2020-07-21 22:42:55,257 INFO L109 eAbstractionObserver]: Analyzing ICFG volatile_alias.i [2020-07-21 22:42:55,268 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 22:42:55,276 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 22:42:55,293 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 22:42:55,348 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 22:42:55,350 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 22:42:55,350 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 22:42:55,351 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 22:42:55,351 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 22:42:55,351 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 22:42:55,351 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 22:42:55,351 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 22:42:55,380 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-07-21 22:42:55,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-07-21 22:42:55,387 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:42:55,388 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:42:55,389 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:42:55,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:42:55,396 INFO L82 PathProgramCache]: Analyzing trace with hash 2096341077, now seen corresponding path program 1 times [2020-07-21 22:42:55,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:42:55,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1571551590] [2020-07-21 22:42:55,411 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 22:42:55,500 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:42:55,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:42:55,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 22:42:55,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:42:55,600 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2020-07-21 22:42:55,602 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 22:42:55,611 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:42:55,611 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 22:42:55,612 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:3 [2020-07-21 22:42:55,623 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 22:42:55,624 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:42:55,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1571551590] [2020-07-21 22:42:55,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:42:55,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 22:42:55,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177304744] [2020-07-21 22:42:55,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 22:42:55,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:42:55,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 22:42:55,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:42:55,650 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2020-07-21 22:42:55,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:42:55,676 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2020-07-21 22:42:55,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 22:42:55,678 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-07-21 22:42:55,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:42:55,685 INFO L225 Difference]: With dead ends: 19 [2020-07-21 22:42:55,685 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 22:42:55,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 22:42:55,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 22:42:55,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 22:42:55,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 22:42:55,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 22:42:55,721 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2020-07-21 22:42:55,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:42:55,722 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 22:42:55,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 22:42:55,722 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 22:42:55,722 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 22:42:55,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:42:55,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 22:42:55,981 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 22:42:55,982 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-21 22:42:55,982 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 22:42:55,982 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 22:42:55,983 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 22:42:55,983 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 22:42:55,983 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 22:42:55,983 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-07-21 22:42:55,984 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 6 16) the Hoare annotation is: true [2020-07-21 22:42:55,984 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-07-21 22:42:55,984 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 6 16) no Hoare annotation was computed. [2020-07-21 22:42:55,984 INFO L268 CegarLoopResult]: For program point L12(lines 12 14) no Hoare annotation was computed. [2020-07-21 22:42:55,984 INFO L268 CegarLoopResult]: For program point L12-2(lines 12 14) no Hoare annotation was computed. [2020-07-21 22:42:55,985 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 6 16) no Hoare annotation was computed. [2020-07-21 22:42:55,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 10:42:55 BoogieIcfgContainer [2020-07-21 22:42:55,992 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 22:42:55,994 INFO L168 Benchmark]: Toolchain (without parser) took 1472.88 ms. Allocated memory was 146.3 MB in the beginning and 208.1 MB in the end (delta: 61.9 MB). Free memory was 104.8 MB in the beginning and 144.6 MB in the end (delta: -39.8 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-07-21 22:42:55,995 INFO L168 Benchmark]: CDTParser took 0.55 ms. Allocated memory is still 146.3 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 22:42:55,996 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.77 ms. Allocated memory is still 146.3 MB. Free memory was 104.4 MB in the beginning and 94.7 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-07-21 22:42:55,997 INFO L168 Benchmark]: Boogie Preprocessor took 210.52 ms. Allocated memory was 146.3 MB in the beginning and 208.1 MB in the end (delta: 61.9 MB). Free memory was 94.7 MB in the beginning and 186.1 MB in the end (delta: -91.4 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-07-21 22:42:55,998 INFO L168 Benchmark]: RCFGBuilder took 252.01 ms. Allocated memory is still 208.1 MB. Free memory was 186.1 MB in the beginning and 174.4 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. [2020-07-21 22:42:55,999 INFO L168 Benchmark]: TraceAbstraction took 742.75 ms. Allocated memory is still 208.1 MB. Free memory was 173.8 MB in the beginning and 144.6 MB in the end (delta: 29.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 7.1 GB. [2020-07-21 22:42:56,004 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55 ms. Allocated memory is still 146.3 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 261.77 ms. Allocated memory is still 146.3 MB. Free memory was 104.4 MB in the beginning and 94.7 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 210.52 ms. Allocated memory was 146.3 MB in the beginning and 208.1 MB in the end (delta: 61.9 MB). Free memory was 94.7 MB in the beginning and 186.1 MB in the end (delta: -91.4 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 252.01 ms. Allocated memory is still 208.1 MB. Free memory was 186.1 MB in the beginning and 174.4 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 742.75 ms. Allocated memory is still 208.1 MB. Free memory was 173.8 MB in the beginning and 144.6 MB in the end (delta: 29.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 14 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: 10 SDtfs, 0 SDslu, 9 SDs, 0 SdLazy, 2 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred 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, 4 LocationsWithAnnotation, 4 PreInvPairs, 4 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 63 SizeOfPredicates, 5 NumberOfNonLiveVariables, 47 ConjunctsInSsa, 10 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...