/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 00:21:14,148 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 00:21:14,152 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 00:21:14,192 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 00:21:14,192 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 00:21:14,201 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 00:21:14,203 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 00:21:14,207 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 00:21:14,209 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 00:21:14,213 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 00:21:14,214 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 00:21:14,215 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 00:21:14,215 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 00:21:14,219 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 00:21:14,221 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 00:21:14,222 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 00:21:14,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 00:21:14,226 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 00:21:14,228 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 00:21:14,235 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 00:21:14,238 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 00:21:14,239 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 00:21:14,239 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 00:21:14,240 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 00:21:14,252 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 00:21:14,253 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 00:21:14,253 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 00:21:14,259 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 00:21:14,259 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 00:21:14,260 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 00:21:14,261 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 00:21:14,265 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 00:21:14,265 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 00:21:14,266 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 00:21:14,269 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 00:21:14,269 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 00:21:14,270 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 00:21:14,270 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 00:21:14,271 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 00:21:14,272 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 00:21:14,272 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 00:21:14,273 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 00:21:14,314 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 00:21:14,315 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 00:21:14,317 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 00:21:14,317 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 00:21:14,318 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 00:21:14,318 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 00:21:14,318 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 00:21:14,318 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 00:21:14,319 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 00:21:14,319 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 00:21:14,320 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 00:21:14,320 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 00:21:14,320 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 00:21:14,320 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 00:21:14,321 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 00:21:14,321 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 00:21:14,321 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 00:21:14,321 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 00:21:14,321 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 00:21:14,322 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 00:21:14,322 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 00:21:14,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:21:14,322 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 00:21:14,322 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 00:21:14,323 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 00:21:14,323 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 00:21:14,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 00:21:14,323 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 00:21:14,323 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 00:21:14,323 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 -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; [2020-08-19 00:21:14,632 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 00:21:14,644 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 00:21:14,648 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 00:21:14,649 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 00:21:14,650 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 00:21:14,651 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test10.c [2020-08-19 00:21:14,728 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/413e61c27/66815b0b1f1b44febb99e57cf8e8bf81/FLAG18c98c09a [2020-08-19 00:21:15,233 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 00:21:15,234 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test10.c [2020-08-19 00:21:15,241 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/413e61c27/66815b0b1f1b44febb99e57cf8e8bf81/FLAG18c98c09a [2020-08-19 00:21:15,592 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/413e61c27/66815b0b1f1b44febb99e57cf8e8bf81 [2020-08-19 00:21:15,605 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 00:21:15,607 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 00:21:15,610 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 00:21:15,610 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 00:21:15,619 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 00:21:15,622 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:21:15" (1/1) ... [2020-08-19 00:21:15,631 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10ef5339 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:21:15, skipping insertion in model container [2020-08-19 00:21:15,631 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:21:15" (1/1) ... [2020-08-19 00:21:15,651 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 00:21:15,673 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 00:21:15,857 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:21:15,873 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 00:21:15,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:21:15,912 INFO L208 MainTranslator]: Completed translation [2020-08-19 00:21:15,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:21:15 WrapperNode [2020-08-19 00:21:15,913 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 00:21:15,913 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 00:21:15,914 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 00:21:15,914 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 00:21:15,999 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:21:15" (1/1) ... [2020-08-19 00:21:16,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:21:15" (1/1) ... [2020-08-19 00:21:16,011 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:21:15" (1/1) ... [2020-08-19 00:21:16,012 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:21:15" (1/1) ... [2020-08-19 00:21:16,025 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:21:15" (1/1) ... [2020-08-19 00:21:16,031 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:21:15" (1/1) ... [2020-08-19 00:21:16,033 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:21:15" (1/1) ... [2020-08-19 00:21:16,035 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 00:21:16,035 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 00:21:16,036 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 00:21:16,036 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 00:21:16,036 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:21:15" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:21:16,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 00:21:16,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 00:21:16,088 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-08-19 00:21:16,089 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 00:21:16,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 00:21:16,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 00:21:16,089 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-08-19 00:21:16,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 00:21:16,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 00:21:16,090 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 00:21:16,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 00:21:16,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 00:21:16,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 00:21:16,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 00:21:16,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 00:21:16,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-19 00:21:16,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 00:21:16,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 00:21:16,400 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 00:21:16,400 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-19 00:21:16,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:21:16 BoogieIcfgContainer [2020-08-19 00:21:16,404 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 00:21:16,407 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 00:21:16,407 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 00:21:16,411 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 00:21:16,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 12:21:15" (1/3) ... [2020-08-19 00:21:16,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32036d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:21:16, skipping insertion in model container [2020-08-19 00:21:16,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:21:15" (2/3) ... [2020-08-19 00:21:16,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32036d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:21:16, skipping insertion in model container [2020-08-19 00:21:16,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:21:16" (3/3) ... [2020-08-19 00:21:16,416 INFO L109 eAbstractionObserver]: Analyzing ICFG test10.c [2020-08-19 00:21:16,430 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 00:21:16,439 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 00:21:16,459 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 00:21:16,498 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 00:21:16,498 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 00:21:16,498 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 00:21:16,499 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 00:21:16,499 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 00:21:16,499 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 00:21:16,500 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 00:21:16,500 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 00:21:16,537 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-08-19 00:21:16,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-19 00:21:16,543 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:21:16,544 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:21:16,545 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:21:16,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:21:16,553 INFO L82 PathProgramCache]: Analyzing trace with hash -320886355, now seen corresponding path program 1 times [2020-08-19 00:21:16,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:21:16,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [470024914] [2020-08-19 00:21:16,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:21:16,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:21:17,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:21:17,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:21:17,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:21:17,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:21:17,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:21:17,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [470024914] [2020-08-19 00:21:17,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:21:17,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 00:21:17,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711420945] [2020-08-19 00:21:17,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 00:21:17,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:21:17,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 00:21:17,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:21:17,439 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 9 states. [2020-08-19 00:21:17,959 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-08-19 00:21:18,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:21:18,241 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2020-08-19 00:21:18,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 00:21:18,245 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-08-19 00:21:18,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:21:18,266 INFO L225 Difference]: With dead ends: 26 [2020-08-19 00:21:18,266 INFO L226 Difference]: Without dead ends: 15 [2020-08-19 00:21:18,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-08-19 00:21:18,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-08-19 00:21:18,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-08-19 00:21:18,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-08-19 00:21:18,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2020-08-19 00:21:18,334 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 14 [2020-08-19 00:21:18,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:21:18,335 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2020-08-19 00:21:18,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 00:21:18,335 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2020-08-19 00:21:18,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-19 00:21:18,336 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:21:18,337 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:21:18,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 00:21:18,338 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:21:18,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:21:18,338 INFO L82 PathProgramCache]: Analyzing trace with hash -320884433, now seen corresponding path program 1 times [2020-08-19 00:21:18,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:21:18,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [272359846] [2020-08-19 00:21:18,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:21:18,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:21:18,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:21:18,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:21:18,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:21:18,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:21:18,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:21:18,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [272359846] [2020-08-19 00:21:18,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:21:18,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 00:21:18,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993954974] [2020-08-19 00:21:18,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 00:21:18,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:21:18,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 00:21:18,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-08-19 00:21:18,681 INFO L87 Difference]: Start difference. First operand 15 states and 14 transitions. Second operand 10 states. [2020-08-19 00:21:19,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:21:19,123 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2020-08-19 00:21:19,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 00:21:19,124 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-08-19 00:21:19,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:21:19,125 INFO L225 Difference]: With dead ends: 15 [2020-08-19 00:21:19,125 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 00:21:19,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2020-08-19 00:21:19,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 00:21:19,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 00:21:19,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 00:21:19,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 00:21:19,127 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-08-19 00:21:19,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:21:19,128 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 00:21:19,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 00:21:19,128 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 00:21:19,128 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 00:21:19,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 00:21:19,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 00:21:19,457 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 42 [2020-08-19 00:21:19,508 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-19 00:21:19,509 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |~#p1~0.base| |old(~#p1~0.base)|) (= |old(~#a~0.offset)| |~#a~0.offset|) (= |old(#length)| |#length|) (= ~pp2~0.base |old(~pp2~0.base)|) (= |~#b~0.base| |old(~#b~0.base)|) (= |old(~pp1~0.base)| ~pp1~0.base) (= |old(~#a~0.base)| |~#a~0.base|) (= |old(~#b~0.offset)| |~#b~0.offset|) (= |old(#valid)| |#valid|) (= |old(#NULL.base)| |#NULL.base|) (= |old(~#p2~0.base)| |~#p2~0.base|) (= |old(~#p2~0.offset)| |~#p2~0.offset|) (= |old(~pp2~0.offset)| ~pp2~0.offset) (= |old(~pp1~0.offset)| ~pp1~0.offset) (= |#NULL.offset| |old(#NULL.offset)|) (= |~#p1~0.offset| |old(~#p1~0.offset)|)) [2020-08-19 00:21:19,509 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-19 00:21:19,509 INFO L268 CegarLoopResult]: For program point fEXIT(lines 9 14) no Hoare annotation was computed. [2020-08-19 00:21:19,510 INFO L264 CegarLoopResult]: At program point fENTRY(lines 9 14) the Hoare annotation is: (or (not (= |~#p1~0.offset| ~pp1~0.offset)) (= |~#b~0.base| ~pp1~0.base) (not (= (select (select |old(#memory_$Pointer$.offset)| |old(~pp2~0.base)|) |old(~pp2~0.offset)|) |~#b~0.offset|)) (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(~pp2~0.offset)| ~pp2~0.offset) (= |#memory_int| |old(#memory_int)|) (= ~pp2~0.base |old(~pp2~0.base)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|)) (not (= |~#b~0.base| (select (select |old(#memory_$Pointer$.base)| |old(~pp2~0.base)|) |old(~pp2~0.offset)|))) (not (= |~#p1~0.base| ~pp1~0.base)) (= |~#p1~0.base| |~#a~0.base|) (= |~#b~0.base| |~#p2~0.base|) (= |~#p2~0.base| |~#a~0.base|) (= |~#b~0.base| |~#a~0.base|)) [2020-08-19 00:21:19,510 INFO L268 CegarLoopResult]: For program point fFINAL(lines 9 14) no Hoare annotation was computed. [2020-08-19 00:21:19,510 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-19 00:21:19,510 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (not (= |~#b~0.base| |~#p1~0.base|)) (= ~pp2~0.base ~pp1~0.base) (not (= |~#p2~0.base| |~#a~0.base|)) (= ~pp2~0.offset ~pp1~0.offset) (not (= |~#b~0.base| |~#p2~0.base|)) (not (= |~#b~0.base| |~#a~0.base|)) (not (= |~#p1~0.base| |~#a~0.base|))) [2020-08-19 00:21:19,510 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-19 00:21:19,510 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-19 00:21:19,512 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 47) no Hoare annotation was computed. [2020-08-19 00:21:19,513 INFO L264 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: (or (not (= |old(~pp2~0.offset)| |old(~pp1~0.offset)|)) (= |~#p1~0.base| |~#a~0.base|) (not (= |old(~pp1~0.base)| |old(~pp2~0.base)|)) (= |~#b~0.base| |~#p2~0.base|) (and (= (select (select |#memory_$Pointer$.offset| ~pp2~0.base) ~pp2~0.offset) |~#b~0.offset|) (= |~#p1~0.offset| ~pp1~0.offset) (= |~#p1~0.base| ~pp1~0.base) (= |~#b~0.base| (select (select |#memory_$Pointer$.base| ~pp2~0.base) ~pp2~0.offset))) (= |~#p2~0.base| |~#a~0.base|) (= |~#b~0.base| |~#a~0.base|) (= |~#b~0.base| |~#p1~0.base|)) [2020-08-19 00:21:19,513 INFO L268 CegarLoopResult]: For program point L31-1(line 31) no Hoare annotation was computed. [2020-08-19 00:21:19,513 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 16 49) the Hoare annotation is: (or (not (= |old(~pp2~0.offset)| |old(~pp1~0.offset)|)) (= |~#p1~0.base| |~#a~0.base|) (not (= |old(~pp1~0.base)| |old(~pp2~0.base)|)) (= |~#b~0.base| |~#p2~0.base|) (= |~#p2~0.base| |~#a~0.base|) (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |#memory_int| |old(#memory_int)|) (= |old(~pp1~0.offset)| ~pp1~0.offset) (= ~pp2~0.base |old(~pp2~0.base)|) (= ~pp2~0.offset ~pp1~0.offset) (= |old(~pp1~0.base)| ~pp1~0.base) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|)) (= |~#b~0.base| |~#a~0.base|) (= |~#b~0.base| |~#p1~0.base|)) [2020-08-19 00:21:19,513 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 16 49) no Hoare annotation was computed. [2020-08-19 00:21:19,513 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 16 49) no Hoare annotation was computed. [2020-08-19 00:21:19,514 INFO L264 CegarLoopResult]: At program point L42(lines 16 49) the Hoare annotation is: (or (= |~#p2~0.base| |~#b~0.base|) (not (= |old(~pp2~0.offset)| |old(~pp1~0.offset)|)) (= |~#a~0.base| |~#p1~0.base|) (not (= |old(~pp1~0.base)| |old(~pp2~0.base)|)) (= |~#p2~0.base| |~#a~0.base|) (= |~#a~0.base| |~#b~0.base|) (= |~#p1~0.base| |~#b~0.base|)) [2020-08-19 00:21:19,514 INFO L268 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed. [2020-08-19 00:21:19,515 INFO L268 CegarLoopResult]: For program point L41-2(lines 41 43) no Hoare annotation was computed. [2020-08-19 00:21:19,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 12:21:19 BoogieIcfgContainer [2020-08-19 00:21:19,539 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 00:21:19,544 INFO L168 Benchmark]: Toolchain (without parser) took 3934.77 ms. Allocated memory was 140.0 MB in the beginning and 246.4 MB in the end (delta: 106.4 MB). Free memory was 101.9 MB in the beginning and 175.9 MB in the end (delta: -74.1 MB). Peak memory consumption was 112.5 MB. Max. memory is 7.1 GB. [2020-08-19 00:21:19,546 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 119.9 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. [2020-08-19 00:21:19,547 INFO L168 Benchmark]: CACSL2BoogieTranslator took 303.54 ms. Allocated memory is still 140.0 MB. Free memory was 101.4 MB in the beginning and 91.5 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-08-19 00:21:19,548 INFO L168 Benchmark]: Boogie Preprocessor took 121.76 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 91.5 MB in the beginning and 180.3 MB in the end (delta: -88.8 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. [2020-08-19 00:21:19,550 INFO L168 Benchmark]: RCFGBuilder took 368.87 ms. Allocated memory is still 202.9 MB. Free memory was 180.3 MB in the beginning and 159.7 MB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2020-08-19 00:21:19,552 INFO L168 Benchmark]: TraceAbstraction took 3132.88 ms. Allocated memory was 202.9 MB in the beginning and 246.4 MB in the end (delta: 43.5 MB). Free memory was 159.7 MB in the beginning and 175.9 MB in the end (delta: -16.2 MB). Peak memory consumption was 107.4 MB. Max. memory is 7.1 GB. [2020-08-19 00:21:19,562 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 119.9 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 303.54 ms. Allocated memory is still 140.0 MB. Free memory was 101.4 MB in the beginning and 91.5 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.76 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 91.5 MB in the beginning and 180.3 MB in the end (delta: -88.8 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 368.87 ms. Allocated memory is still 202.9 MB. Free memory was 180.3 MB in the beginning and 159.7 MB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3132.88 ms. Allocated memory was 202.9 MB in the beginning and 246.4 MB in the end (delta: 43.5 MB). Free memory was 159.7 MB in the beginning and 175.9 MB in the end (delta: -16.2 MB). Peak memory consumption was 107.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 47]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: (((((p2 == b || !(\old(pp2) == \old(pp1))) || a == p1) || !(\old(pp1) == \old(pp2))) || p2 == a) || a == b) || p1 == b - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 19 SDtfs, 22 SDslu, 56 SDs, 0 SdLazy, 93 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 7 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 248 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 200 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 5668 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...