/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 NUM_FUNCTIONS --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.c_1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 13:54:45,317 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-07-20 13:54:45,332 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 13:54:45,333 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 13:54:45,335 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 13:54:45,337 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 13:54:45,338 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 13:54:45,339 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 13:54:45,340 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 13:54:45,341 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 13:54:45,342 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 13:54:45,342 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 13:54:45,344 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 13:54:45,345 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 13:54:45,345 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 13:54:45,346 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 13:54:45,348 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 13:54:45,350 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 13:54:45,351 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 13:54:45,352 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 13:54:45,353 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 13:54:45,354 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 13:54:45,357 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 13:54:45,364 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 13:54:45,365 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 13:54:45,366 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 13:54:45,367 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 [2020-07-20 13:54:45,381 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 13:54:45,382 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 13:54:45,383 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 13:54:45,383 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 13:54:45,383 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 13:54:45,384 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 13:54:45,384 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 13:54:45,384 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 13:54:45,384 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 13:54:45,385 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 13:54:45,385 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 13:54:45,385 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 13:54:45,385 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 13:54:45,385 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 13:54:45,386 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 13:54:45,386 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 13:54:45,386 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 13:54:45,386 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 13:54:45,386 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 13:54:45,387 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 13:54:45,387 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 13:54:45,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 13:54:45,387 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 13:54:45,387 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 13:54:45,388 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 13:54:45,388 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 13:54:45,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:54:45,388 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 13:54:45,389 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 13:54:45,389 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 -> NUM_FUNCTIONS 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 [2020-07-20 13:54:45,690 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 13:54:45,703 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 13:54:45,706 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 13:54:45,708 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 13:54:45,708 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 13:54:45,709 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/volatile_alias.c_1.i [2020-07-20 13:54:45,771 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82b19a5ed/c471cd973450498399fd78082b254a97/FLAGf02401bc0 [2020-07-20 13:54:46,227 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 13:54:46,228 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/volatile_alias.c_1.i [2020-07-20 13:54:46,237 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82b19a5ed/c471cd973450498399fd78082b254a97/FLAGf02401bc0 [2020-07-20 13:54:46,579 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82b19a5ed/c471cd973450498399fd78082b254a97 [2020-07-20 13:54:46,590 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 13:54:46,593 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 13:54:46,595 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 13:54:46,595 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 13:54:46,598 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 13:54:46,600 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:54:46" (1/1) ... [2020-07-20 13:54:46,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@242279e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:54:46, skipping insertion in model container [2020-07-20 13:54:46,603 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:54:46" (1/1) ... [2020-07-20 13:54:46,611 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 13:54:46,629 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 13:54:46,810 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:54:46,823 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 13:54:46,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:54:46,856 INFO L208 MainTranslator]: Completed translation [2020-07-20 13:54:46,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:54:46 WrapperNode [2020-07-20 13:54:46,857 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 13:54:46,858 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 13:54:46,858 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 13:54:46,858 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 13:54:46,872 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:54:46" (1/1) ... [2020-07-20 13:54:46,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:54:46" (1/1) ... [2020-07-20 13:54:46,963 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:54:46" (1/1) ... [2020-07-20 13:54:46,964 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:54:46" (1/1) ... [2020-07-20 13:54:46,970 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:54:46" (1/1) ... [2020-07-20 13:54:46,971 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:54:46" (1/1) ... [2020-07-20 13:54:46,972 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:54:46" (1/1) ... [2020-07-20 13:54:46,979 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 13:54:46,980 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 13:54:46,980 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 13:54:46,981 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 13:54:46,982 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:54:46" (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 [2020-07-20 13:54:47,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 13:54:47,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 13:54:47,050 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 13:54:47,050 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 13:54:47,050 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 13:54:47,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 13:54:47,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-20 13:54:47,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 13:54:47,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 13:54:47,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 13:54:47,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 13:54:47,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 13:54:47,222 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 13:54:47,223 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 13:54:47,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:54:47 BoogieIcfgContainer [2020-07-20 13:54:47,226 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 13:54:47,228 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 13:54:47,228 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 13:54:47,231 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 13:54:47,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:54:46" (1/3) ... [2020-07-20 13:54:47,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14e52c88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:54:47, skipping insertion in model container [2020-07-20 13:54:47,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:54:46" (2/3) ... [2020-07-20 13:54:47,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14e52c88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:54:47, skipping insertion in model container [2020-07-20 13:54:47,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:54:47" (3/3) ... [2020-07-20 13:54:47,235 INFO L109 eAbstractionObserver]: Analyzing ICFG volatile_alias.c_1.i [2020-07-20 13:54:47,246 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 13:54:47,259 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 13:54:47,273 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 13:54:47,297 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 13:54:47,298 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 13:54:47,298 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 13:54:47,298 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 13:54:47,298 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 13:54:47,298 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 13:54:47,299 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 13:54:47,299 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 13:54:47,317 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-07-20 13:54:47,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-07-20 13:54:47,323 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:54:47,324 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:54:47,325 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:54:47,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:54:47,331 INFO L82 PathProgramCache]: Analyzing trace with hash 2096341077, now seen corresponding path program 1 times [2020-07-20 13:54:47,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:54:47,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [664763403] [2020-07-20 13:54:47,341 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 [2020-07-20 13:54:47,429 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 13:54:47,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:54:47,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-20 13:54:47,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:54:47,578 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 [2020-07-20 13:54:47,580 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:54:47,588 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:54:47,589 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:54:47,590 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:3 [2020-07-20 13:54:47,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:54:47,613 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:54:47,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [664763403] [2020-07-20 13:54:47,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:54:47,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 13:54:47,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718305081] [2020-07-20 13:54:47,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 13:54:47,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:54:47,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 13:54:47,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 13:54:47,634 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2020-07-20 13:54:47,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:54:47,658 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2020-07-20 13:54:47,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 13:54:47,660 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-07-20 13:54:47,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:54:47,666 INFO L225 Difference]: With dead ends: 19 [2020-07-20 13:54:47,667 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 13:54:47,670 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 [2020-07-20 13:54:47,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 13:54:47,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 13:54:47,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 13:54:47,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 13:54:47,699 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2020-07-20 13:54:47,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:54:47,700 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 13:54:47,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 13:54:47,700 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 13:54:47,700 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 13:54:47,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:54:47,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 13:54:47,968 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 13:54:47,968 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-20 13:54:47,969 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 13:54:47,969 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 13:54:47,969 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 13:54:47,969 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 13:54:47,969 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 13:54:47,970 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 23) no Hoare annotation was computed. [2020-07-20 13:54:47,970 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 16 26) the Hoare annotation is: true [2020-07-20 13:54:47,970 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 16 26) no Hoare annotation was computed. [2020-07-20 13:54:47,970 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 16 26) no Hoare annotation was computed. [2020-07-20 13:54:47,971 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-07-20 13:54:47,971 INFO L268 CegarLoopResult]: For program point L22(lines 22 24) no Hoare annotation was computed. [2020-07-20 13:54:47,971 INFO L268 CegarLoopResult]: For program point L22-2(lines 22 24) no Hoare annotation was computed. [2020-07-20 13:54:47,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 01:54:47 BoogieIcfgContainer [2020-07-20 13:54:47,977 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 13:54:47,979 INFO L168 Benchmark]: Toolchain (without parser) took 1387.68 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 102.5 MB in the beginning and 137.9 MB in the end (delta: -35.4 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. [2020-07-20 13:54:47,981 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 137.4 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 13:54:47,984 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.68 ms. Allocated memory is still 137.4 MB. Free memory was 102.1 MB in the beginning and 92.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-07-20 13:54:47,986 INFO L168 Benchmark]: Boogie Preprocessor took 121.33 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 92.3 MB in the beginning and 178.9 MB in the end (delta: -86.6 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2020-07-20 13:54:47,988 INFO L168 Benchmark]: RCFGBuilder took 246.16 ms. Allocated memory is still 200.8 MB. Free memory was 178.9 MB in the beginning and 166.7 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-07-20 13:54:47,989 INFO L168 Benchmark]: TraceAbstraction took 749.99 ms. Allocated memory is still 200.8 MB. Free memory was 166.7 MB in the beginning and 137.9 MB in the end (delta: 28.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. [2020-07-20 13:54:47,999 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 137.4 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 262.68 ms. Allocated memory is still 137.4 MB. Free memory was 102.1 MB in the beginning and 92.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.33 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 92.3 MB in the beginning and 178.9 MB in the end (delta: -86.6 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 246.16 ms. Allocated memory is still 200.8 MB. Free memory was 178.9 MB in the beginning and 166.7 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 749.99 ms. Allocated memory is still 200.8 MB. Free memory was 166.7 MB in the beginning and 137.9 MB in the end (delta: 28.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 23]: 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: 0.6s, 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, 4 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 63 SizeOfPredicates, 5 NumberOfNonLiveVariables, 37 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...