/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 DAGSIZE --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/verifythis/elimination_max_rec.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 21:47:10,357 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 21:47:10,359 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 21:47:10,373 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 21:47:10,374 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 21:47:10,375 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 21:47:10,376 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 21:47:10,378 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 21:47:10,380 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 21:47:10,381 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 21:47:10,382 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 21:47:10,383 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 21:47:10,383 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 21:47:10,384 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 21:47:10,385 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 21:47:10,387 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 21:47:10,388 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 21:47:10,389 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 21:47:10,391 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 21:47:10,393 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 21:47:10,395 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 21:47:10,396 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 21:47:10,397 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 21:47:10,398 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 21:47:10,401 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 21:47:10,409 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 21:47:10,410 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 21:47:10,411 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 21:47:10,412 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 21:47:10,431 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 21:47:10,431 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 21:47:10,433 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 21:47:10,433 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 21:47:10,433 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 21:47:10,433 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 21:47:10,433 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 21:47:10,434 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 21:47:10,434 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 21:47:10,434 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 21:47:10,434 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 21:47:10,435 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 21:47:10,435 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 21:47:10,435 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 21:47:10,435 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 21:47:10,435 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 21:47:10,436 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 21:47:10,436 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 21:47:10,436 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 21:47:10,436 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 21:47:10,437 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 21:47:10,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 21:47:10,437 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 21:47:10,437 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 21:47:10,437 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 21:47:10,438 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 21:47:10,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:47:10,438 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 21:47:10,438 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 21:47:10,438 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 -> DAGSIZE 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 21:47:10,741 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 21:47:10,757 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 21:47:10,761 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 21:47:10,763 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 21:47:10,763 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 21:47:10,764 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/elimination_max_rec.c [2020-07-20 21:47:10,849 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bf84db54/8ec607eb2d024efda8eb4c9b0f2bcd43/FLAG23dd6f2d0 [2020-07-20 21:47:11,404 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 21:47:11,405 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/verifythis/elimination_max_rec.c [2020-07-20 21:47:11,412 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bf84db54/8ec607eb2d024efda8eb4c9b0f2bcd43/FLAG23dd6f2d0 [2020-07-20 21:47:11,763 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bf84db54/8ec607eb2d024efda8eb4c9b0f2bcd43 [2020-07-20 21:47:11,774 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 21:47:11,777 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 21:47:11,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 21:47:11,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 21:47:11,787 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 21:47:11,788 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:47:11" (1/1) ... [2020-07-20 21:47:11,791 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23d50f0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:47:11, skipping insertion in model container [2020-07-20 21:47:11,792 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:47:11" (1/1) ... [2020-07-20 21:47:11,798 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 21:47:11,820 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 21:47:12,049 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 21:47:12,067 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 21:47:12,090 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 21:47:12,110 INFO L208 MainTranslator]: Completed translation [2020-07-20 21:47:12,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:47:12 WrapperNode [2020-07-20 21:47:12,111 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 21:47:12,112 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 21:47:12,112 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 21:47:12,112 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 21:47:12,224 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:47:12" (1/1) ... [2020-07-20 21:47:12,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:47:12" (1/1) ... [2020-07-20 21:47:12,241 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:47:12" (1/1) ... [2020-07-20 21:47:12,241 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:47:12" (1/1) ... [2020-07-20 21:47:12,258 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:47:12" (1/1) ... [2020-07-20 21:47:12,261 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:47:12" (1/1) ... [2020-07-20 21:47:12,263 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:47:12" (1/1) ... [2020-07-20 21:47:12,266 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 21:47:12,266 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 21:47:12,266 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 21:47:12,267 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 21:47:12,268 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:47:12" (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 21:47:12,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 21:47:12,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 21:47:12,330 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 21:47:12,330 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 21:47:12,331 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-07-20 21:47:12,331 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 21:47:12,331 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-07-20 21:47:12,331 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-20 21:47:12,331 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 21:47:12,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 21:47:12,332 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 21:47:12,332 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 21:47:12,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 21:47:12,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 21:47:12,332 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-07-20 21:47:12,332 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 21:47:12,333 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 21:47:12,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 21:47:12,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-07-20 21:47:12,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 21:47:12,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 21:47:12,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 21:47:12,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 21:47:12,684 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 21:47:12,685 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 21:47:12,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:47:12 BoogieIcfgContainer [2020-07-20 21:47:12,690 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 21:47:12,692 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 21:47:12,692 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 21:47:12,696 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 21:47:12,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 09:47:11" (1/3) ... [2020-07-20 21:47:12,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a1c1bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:47:12, skipping insertion in model container [2020-07-20 21:47:12,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:47:12" (2/3) ... [2020-07-20 21:47:12,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a1c1bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:47:12, skipping insertion in model container [2020-07-20 21:47:12,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:47:12" (3/3) ... [2020-07-20 21:47:12,701 INFO L109 eAbstractionObserver]: Analyzing ICFG elimination_max_rec.c [2020-07-20 21:47:12,721 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 21:47:12,736 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 21:47:12,751 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 21:47:12,776 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 21:47:12,776 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 21:47:12,776 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 21:47:12,776 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 21:47:12,777 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 21:47:12,777 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 21:47:12,777 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 21:47:12,777 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 21:47:12,798 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-07-20 21:47:12,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-20 21:47:12,804 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:47:12,805 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:47:12,805 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:47:12,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:47:12,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1882906983, now seen corresponding path program 1 times [2020-07-20 21:47:12,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:47:12,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [384800354] [2020-07-20 21:47:12,822 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 21:47:12,965 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 21:47:12,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:47:12,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-20 21:47:12,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:47:13,070 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 21:47:13,073 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 21:47:13,082 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 21:47:13,123 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 21:47:13,123 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:47:13,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [384800354] [2020-07-20 21:47:13,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:47:13,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 21:47:13,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975226822] [2020-07-20 21:47:13,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 21:47:13,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:47:13,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 21:47:13,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 21:47:13,153 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 6 states. [2020-07-20 21:47:13,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:47:13,318 INFO L93 Difference]: Finished difference Result 81 states and 98 transitions. [2020-07-20 21:47:13,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 21:47:13,321 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-07-20 21:47:13,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:47:13,333 INFO L225 Difference]: With dead ends: 81 [2020-07-20 21:47:13,333 INFO L226 Difference]: Without dead ends: 41 [2020-07-20 21:47:13,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-20 21:47:13,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-07-20 21:47:13,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-07-20 21:47:13,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-20 21:47:13,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2020-07-20 21:47:13,397 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 24 [2020-07-20 21:47:13,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:47:13,398 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2020-07-20 21:47:13,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 21:47:13,398 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2020-07-20 21:47:13,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-07-20 21:47:13,402 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:47:13,402 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:47:13,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:47:13,619 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:47:13,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:47:13,620 INFO L82 PathProgramCache]: Analyzing trace with hash 601964552, now seen corresponding path program 1 times [2020-07-20 21:47:13,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:47:13,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1165848918] [2020-07-20 21:47:13,621 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 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:47:13,717 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 21:47:13,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:47:13,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-20 21:47:13,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:47:13,770 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2020-07-20 21:47:13,771 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:47:13,778 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:47:13,779 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 21:47:13,779 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:7, output treesize:6 [2020-07-20 21:47:15,856 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_check_~a.base_BEFORE_CALL_1 Int)) (= ((as const (Array Int Int)) 0) (select |c_#memory_int| v_check_~a.base_BEFORE_CALL_1))) is different from true [2020-07-20 21:47:17,886 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_check_~a.base_BEFORE_CALL_2 Int)) (= ((as const (Array Int Int)) 0) (select |c_#memory_int| v_check_~a.base_BEFORE_CALL_2))) is different from true [2020-07-20 21:47:19,917 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_check_~a.base_BEFORE_CALL_3 Int)) (= ((as const (Array Int Int)) 0) (select |c_#memory_int| v_check_~a.base_BEFORE_CALL_3))) is different from true [2020-07-20 21:47:19,958 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 29 treesize of output 23 [2020-07-20 21:47:19,959 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 21:47:19,983 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 21:47:19,986 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-07-20 21:47:19,986 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:29, output treesize:21 [2020-07-20 21:47:20,026 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 21:47:20,087 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2020-07-20 21:47:20,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 21:47:20,120 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:47:22,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1165848918] [2020-07-20 21:47:22,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-20 21:47:22,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-07-20 21:47:22,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782574620] [2020-07-20 21:47:22,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-20 21:47:22,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:47:22,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-20 21:47:22,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=111, Unknown=4, NotChecked=66, Total=210 [2020-07-20 21:47:22,218 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 13 states. [2020-07-20 21:47:22,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:47:22,439 INFO L93 Difference]: Finished difference Result 47 states and 49 transitions. [2020-07-20 21:47:22,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-20 21:47:22,441 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 43 [2020-07-20 21:47:22,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:47:22,442 INFO L225 Difference]: With dead ends: 47 [2020-07-20 21:47:22,442 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 21:47:22,444 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 30 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=48, Invalid=200, Unknown=4, NotChecked=90, Total=342 [2020-07-20 21:47:22,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 21:47:22,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 21:47:22,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 21:47:22,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 21:47:22,446 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2020-07-20 21:47:22,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:47:22,446 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 21:47:22,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-20 21:47:22,447 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 21:47:22,447 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 21:47:22,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:47:22,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 21:47:23,011 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 21:47:23,011 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-20 21:47:23,012 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 21:47:23,012 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 21:47:23,012 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 21:47:23,012 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 21:47:23,012 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 21:47:23,013 INFO L271 CegarLoopResult]: At program point assume_abort_if_notENTRY(lines 5 7) the Hoare annotation is: true [2020-07-20 21:47:23,013 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-07-20 21:47:23,013 INFO L268 CegarLoopResult]: For program point L6-2(lines 5 7) no Hoare annotation was computed. [2020-07-20 21:47:23,013 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 5 7) no Hoare annotation was computed. [2020-07-20 21:47:23,013 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 39 48) the Hoare annotation is: true [2020-07-20 21:47:23,013 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 39 48) no Hoare annotation was computed. [2020-07-20 21:47:23,014 INFO L264 CegarLoopResult]: At program point L44(line 44) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= .cse0 (select |#memory_int| |main_#t~malloc10.base|)) (= .cse0 (select |#memory_int| main_~a~0.base)))) [2020-07-20 21:47:23,014 INFO L271 CegarLoopResult]: At program point L43(line 43) the Hoare annotation is: true [2020-07-20 21:47:23,014 INFO L268 CegarLoopResult]: For program point L44-1(line 44) no Hoare annotation was computed. [2020-07-20 21:47:23,014 INFO L271 CegarLoopResult]: At program point L42(line 42) the Hoare annotation is: true [2020-07-20 21:47:23,014 INFO L268 CegarLoopResult]: For program point L43-1(line 43) no Hoare annotation was computed. [2020-07-20 21:47:23,014 INFO L268 CegarLoopResult]: For program point L42-1(line 42) no Hoare annotation was computed. [2020-07-20 21:47:23,015 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 39 48) no Hoare annotation was computed. [2020-07-20 21:47:23,015 INFO L268 CegarLoopResult]: For program point L34-1(line 34) no Hoare annotation was computed. [2020-07-20 21:47:23,015 INFO L271 CegarLoopResult]: At program point checkENTRY(lines 14 37) the Hoare annotation is: true [2020-07-20 21:47:23,015 INFO L264 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (or (not (<= (+ |check_#in~y| 1) |check_#in~n|)) (not (<= 0 |check_#in~x|)) (not (= .cse0 (select |#memory_int| |check_#in~a.base|))) (and (= .cse0 (select |#memory_int| check_~a.base)) (<= 0 check_~x) (<= (+ check_~y 1) check_~n)))) [2020-07-20 21:47:23,015 INFO L268 CegarLoopResult]: For program point L31-1(line 31) no Hoare annotation was computed. [2020-07-20 21:47:23,016 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-07-20 21:47:23,016 INFO L268 CegarLoopResult]: For program point L23(lines 23 24) no Hoare annotation was computed. [2020-07-20 21:47:23,016 INFO L264 CegarLoopResult]: At program point L23-2(lines 23 24) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (or (not (<= (+ |check_#in~y| 1) |check_#in~n|)) (not (<= 0 |check_#in~x|)) (not (= .cse0 (select |#memory_int| |check_#in~a.base|))) (and (= .cse0 (select |#memory_int| check_~a.base)) (<= 0 check_~x) (<= (+ check_~y 1) check_~n)))) [2020-07-20 21:47:23,016 INFO L268 CegarLoopResult]: For program point checkEXIT(lines 14 37) no Hoare annotation was computed. [2020-07-20 21:47:23,016 INFO L264 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (or (not (<= (+ |check_#in~y| 1) |check_#in~n|)) (not (<= 0 |check_#in~x|)) (not (= .cse0 (select |#memory_int| |check_#in~a.base|))) (and (= .cse0 (select |#memory_int| check_~a.base)) (<= 0 check_~x) (<= (+ check_~y 1) check_~n)))) [2020-07-20 21:47:23,016 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-07-20 21:47:23,017 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-07-20 21:47:23,017 INFO L268 CegarLoopResult]: For program point checkFINAL(lines 14 37) no Hoare annotation was computed. [2020-07-20 21:47:23,017 INFO L264 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: (let ((.cse1 ((as const (Array Int Int)) 0))) (or (and (exists ((check_~x1~0 Int) (check_~i~0 Int) (check_~a.offset Int)) (let ((.cse0 ((as const (Array Int Int)) 0))) (and (<= (select .cse0 (+ (* check_~x1~0 4) check_~a.offset)) check_~ax~0) (<= check_~ai~0 (select .cse0 (+ (* check_~i~0 4) check_~a.offset)))))) (= .cse1 (select |#memory_int| check_~a.base)) (<= 0 check_~x) (<= (+ check_~y 1) check_~n)) (not (<= (+ |check_#in~y| 1) |check_#in~n|)) (not (<= 0 |check_#in~x|)) (not (= .cse1 (select |#memory_int| |check_#in~a.base|))))) [2020-07-20 21:47:23,017 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 8 10) the Hoare annotation is: true [2020-07-20 21:47:23,018 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 8 10) no Hoare annotation was computed. [2020-07-20 21:47:23,018 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-07-20 21:47:23,018 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-07-20 21:47:23,018 INFO L268 CegarLoopResult]: For program point L9-3(lines 8 10) no Hoare annotation was computed. [2020-07-20 21:47:23,018 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2020-07-20 21:47:23,018 INFO L271 CegarLoopResult]: At program point #Ultimate.meminitENTRY(line -1) the Hoare annotation is: true [2020-07-20 21:47:23,019 INFO L268 CegarLoopResult]: For program point #Ultimate.meminitEXIT(line -1) no Hoare annotation was computed. [2020-07-20 21:47:23,019 INFO L268 CegarLoopResult]: For program point #Ultimate.meminitFINAL(line -1) no Hoare annotation was computed. [2020-07-20 21:47:23,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 09:47:23 BoogieIcfgContainer [2020-07-20 21:47:23,026 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 21:47:23,028 INFO L168 Benchmark]: Toolchain (without parser) took 11252.49 ms. Allocated memory was 136.3 MB in the beginning and 229.6 MB in the end (delta: 93.3 MB). Free memory was 100.9 MB in the beginning and 128.2 MB in the end (delta: -27.4 MB). Peak memory consumption was 66.0 MB. Max. memory is 7.1 GB. [2020-07-20 21:47:23,029 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 136.3 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-20 21:47:23,030 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.85 ms. Allocated memory is still 136.3 MB. Free memory was 100.6 MB in the beginning and 90.2 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-07-20 21:47:23,031 INFO L168 Benchmark]: Boogie Preprocessor took 154.25 ms. Allocated memory was 136.3 MB in the beginning and 200.3 MB in the end (delta: 64.0 MB). Free memory was 90.2 MB in the beginning and 177.6 MB in the end (delta: -87.5 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2020-07-20 21:47:23,032 INFO L168 Benchmark]: RCFGBuilder took 423.76 ms. Allocated memory is still 200.3 MB. Free memory was 177.6 MB in the beginning and 159.7 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. [2020-07-20 21:47:23,033 INFO L168 Benchmark]: TraceAbstraction took 10334.47 ms. Allocated memory was 200.3 MB in the beginning and 229.6 MB in the end (delta: 29.4 MB). Free memory was 159.0 MB in the beginning and 128.2 MB in the end (delta: 30.7 MB). Peak memory consumption was 60.1 MB. Max. memory is 7.1 GB. [2020-07-20 21:47:23,037 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 136.3 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 328.85 ms. Allocated memory is still 136.3 MB. Free memory was 100.6 MB in the beginning and 90.2 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 154.25 ms. Allocated memory was 136.3 MB in the beginning and 200.3 MB in the end (delta: 64.0 MB). Free memory was 90.2 MB in the beginning and 177.6 MB in the end (delta: -87.5 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 423.76 ms. Allocated memory is still 200.3 MB. Free memory was 177.6 MB in the beginning and 159.7 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10334.47 ms. Allocated memory was 200.3 MB in the beginning and 229.6 MB in the end (delta: 29.4 MB). Free memory was 159.0 MB in the beginning and 128.2 MB in the end (delta: 30.7 MB). Peak memory consumption was 60.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: 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 7 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.8s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 71 SDtfs, 37 SDslu, 306 SDs, 0 SdLazy, 143 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 78 GetRequests, 49 SyntacticMatches, 6 SemanticMatches, 23 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 8.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 36 PreInvPairs, 44 NumberOfFragments, 177 HoareAnnotationTreeSize, 36 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 15 FomulaSimplificationsInter, 108 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 8.6s InterpolantComputationTime, 67 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 65 ConstructedInterpolants, 13 QuantifiedInterpolants, 9741 SizeOfPredicates, 14 NumberOfNonLiveVariables, 253 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 4/8 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...