/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test30-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 10:21:26,008 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:21:26,014 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:21:26,057 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:21:26,057 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:21:26,065 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:21:26,069 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:21:26,073 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:21:26,076 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:21:26,079 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:21:26,080 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:21:26,081 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:21:26,081 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:21:26,084 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:21:26,086 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:21:26,088 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:21:26,090 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:21:26,092 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:21:26,094 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:21:26,102 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:21:26,104 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:21:26,106 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:21:26,107 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:21:26,108 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:21:26,120 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-21 10:21:26,140 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:21:26,141 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:21:26,144 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:21:26,145 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 [2020-09-21 10:21:26,189 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:21:26,189 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:21:26,192 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:21:26,192 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:21:26,192 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:21:26,193 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:21:26,193 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:21:26,193 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:21:26,193 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:21:26,193 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:21:26,194 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:21:26,195 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:21:26,195 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:21:26,195 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:21:26,196 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:21:26,196 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:21:26,196 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:21:26,196 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:21:26,196 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:21:26,197 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:21:26,197 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:21:26,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:21:26,197 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:21:26,197 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:21:26,197 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:21:26,198 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:21:26,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:21:26,198 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:21:26,198 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:21:26,198 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 -> false [2020-09-21 10:21:26,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:21:26,648 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:21:26,654 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:21:26,656 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:21:26,657 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:21:26,658 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test30-1.c [2020-09-21 10:21:26,754 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f5503e5f4/af6cd9b9d3ec4e03ad634b27c4b4cf51/FLAG5ead65ae5 [2020-09-21 10:21:27,324 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:21:27,325 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test30-1.c [2020-09-21 10:21:27,333 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f5503e5f4/af6cd9b9d3ec4e03ad634b27c4b4cf51/FLAG5ead65ae5 [2020-09-21 10:21:27,677 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f5503e5f4/af6cd9b9d3ec4e03ad634b27c4b4cf51 [2020-09-21 10:21:27,690 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:21:27,696 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:21:27,697 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:21:27,698 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:21:27,702 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:21:27,703 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:21:27" (1/1) ... [2020-09-21 10:21:27,708 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@598df217 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:21:27, skipping insertion in model container [2020-09-21 10:21:27,708 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:21:27" (1/1) ... [2020-09-21 10:21:27,718 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:21:27,745 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:21:27,980 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:21:27,998 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:21:28,018 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:21:28,038 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:21:28,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:21:28 WrapperNode [2020-09-21 10:21:28,039 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:21:28,040 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:21:28,040 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:21:28,040 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:21:28,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:21:28" (1/1) ... [2020-09-21 10:21:28,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:21:28" (1/1) ... [2020-09-21 10:21:28,162 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:21:28" (1/1) ... [2020-09-21 10:21:28,163 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:21:28" (1/1) ... [2020-09-21 10:21:28,172 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:21:28" (1/1) ... [2020-09-21 10:21:28,174 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:21:28" (1/1) ... [2020-09-21 10:21:28,176 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:21:28" (1/1) ... [2020-09-21 10:21:28,179 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:21:28,179 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:21:28,179 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:21:28,180 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:21:28,181 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:21:28" (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 [2020-09-21 10:21:28,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:21:28,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:21:28,253 INFO L138 BoogieDeclarations]: Found implementation of procedure assign [2020-09-21 10:21:28,253 INFO L138 BoogieDeclarations]: Found implementation of procedure assign2 [2020-09-21 10:21:28,254 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:21:28,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:21:28,255 INFO L130 BoogieDeclarations]: Found specification of procedure assign [2020-09-21 10:21:28,256 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 10:21:28,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 10:21:28,256 INFO L130 BoogieDeclarations]: Found specification of procedure assign2 [2020-09-21 10:21:28,256 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 10:21:28,257 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:21:28,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:21:28,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 10:21:28,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 10:21:28,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-21 10:21:28,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:21:28,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 10:21:28,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 10:21:28,534 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:21:28,534 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-21 10:21:28,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:21:28 BoogieIcfgContainer [2020-09-21 10:21:28,539 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:21:28,542 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:21:28,543 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:21:28,547 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:21:28,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:21:27" (1/3) ... [2020-09-21 10:21:28,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d1c3250 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:21:28, skipping insertion in model container [2020-09-21 10:21:28,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:21:28" (2/3) ... [2020-09-21 10:21:28,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d1c3250 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:21:28, skipping insertion in model container [2020-09-21 10:21:28,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:21:28" (3/3) ... [2020-09-21 10:21:28,551 INFO L109 eAbstractionObserver]: Analyzing ICFG test30-1.c [2020-09-21 10:21:28,564 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:21:28,575 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 10:21:28,603 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 10:21:28,662 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:21:28,663 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:21:28,663 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:21:28,663 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:21:28,663 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:21:28,663 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:21:28,664 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:21:28,672 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:21:28,699 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-09-21 10:21:28,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-21 10:21:28,707 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:21:28,708 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:21:28,709 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:21:28,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:21:28,716 INFO L82 PathProgramCache]: Analyzing trace with hash -457594768, now seen corresponding path program 1 times [2020-09-21 10:21:28,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:21:28,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1521255500] [2020-09-21 10:21:28,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:21:28,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:29,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:21:29,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:29,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:21:29,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:29,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:21:29,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:29,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:21:29,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1521255500] [2020-09-21 10:21:29,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:21:29,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-21 10:21:29,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609905338] [2020-09-21 10:21:29,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-21 10:21:29,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:21:29,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-21 10:21:29,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-21 10:21:29,468 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 11 states. [2020-09-21 10:21:30,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:21:30,340 INFO L93 Difference]: Finished difference Result 27 states and 26 transitions. [2020-09-21 10:21:30,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-21 10:21:30,343 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 18 [2020-09-21 10:21:30,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:21:30,361 INFO L225 Difference]: With dead ends: 27 [2020-09-21 10:21:30,362 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 10:21:30,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2020-09-21 10:21:30,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 10:21:30,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 10:21:30,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 10:21:30,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 10:21:30,406 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-09-21 10:21:30,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:21:30,407 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 10:21:30,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-21 10:21:30,407 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 10:21:30,408 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 10:21:30,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:21:30,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-21 10:21:31,082 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-21 10:21:31,083 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(#NULL.base)| |#NULL.base|) (= |~#global~0.base| |old(~#global~0.base)|) (= |old(~#a~0.offset)| |~#a~0.offset|) (= |old(#length)| |#length|) (= |~#b~0.base| |old(~#b~0.base)|) (= |~#global~0.offset| |old(~#global~0.offset)|) (= |old(~#a~0.base)| |~#a~0.base|) (= |old(~#b~0.offset)| |~#b~0.offset|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-21 10:21:31,083 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-21 10:21:31,084 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-21 10:21:31,084 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (let ((.cse0 (select |#memory_$Pointer$.offset| |~#global~0.base|)) (.cse2 (+ |~#global~0.offset| 4)) (.cse1 (select |#memory_$Pointer$.base| |~#global~0.base|))) (and (= (select .cse0 |~#global~0.offset|) |~#a~0.offset|) (= |~#b~0.base| (select .cse1 .cse2)) (= (select .cse0 .cse2) |~#b~0.offset|) (= (select .cse1 |~#global~0.offset|) |~#a~0.base|) (not (= |~#b~0.base| |~#a~0.base|)))) [2020-09-21 10:21:31,084 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-21 10:21:31,084 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-21 10:21:31,084 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 31) no Hoare annotation was computed. [2020-09-21 10:21:31,085 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 19 33) the Hoare annotation is: (let ((.cse0 (select |old(#memory_$Pointer$.offset)| |~#global~0.base|)) (.cse1 (select |old(#memory_$Pointer$.base)| |~#global~0.base|)) (.cse2 (+ |~#global~0.offset| 4))) (or (not (= (select .cse0 |~#global~0.offset|) |~#a~0.offset|)) (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|)) (not (= (select .cse1 |~#global~0.offset|) |~#a~0.base|)) (not (= (select .cse0 .cse2) |~#b~0.offset|)) (= |~#b~0.base| |~#a~0.base|) (not (= |~#b~0.base| (select .cse1 .cse2))))) [2020-09-21 10:21:31,085 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 19 33) no Hoare annotation was computed. [2020-09-21 10:21:31,085 INFO L264 CegarLoopResult]: At program point L26(lines 20 33) the Hoare annotation is: (let ((.cse1 (select |old(#memory_$Pointer$.offset)| |~#global~0.base|)) (.cse0 (select |old(#memory_$Pointer$.base)| |~#global~0.base|)) (.cse2 (+ |~#global~0.offset| 4))) (or (not (= |~#a~0.base| (select .cse0 |~#global~0.offset|))) (not (= |~#a~0.offset| (select .cse1 |~#global~0.offset|))) (not (= (select .cse1 .cse2) |~#b~0.offset|)) (= |~#a~0.base| |~#b~0.base|) (not (= (select .cse0 .cse2) |~#b~0.base|)))) [2020-09-21 10:21:31,086 INFO L268 CegarLoopResult]: For program point L25(lines 25 27) no Hoare annotation was computed. [2020-09-21 10:21:31,086 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 19 33) no Hoare annotation was computed. [2020-09-21 10:21:31,086 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (let ((.cse0 (select |old(#memory_$Pointer$.offset)| |~#global~0.base|)) (.cse1 (select |old(#memory_$Pointer$.base)| |~#global~0.base|)) (.cse2 (+ |~#global~0.offset| 4))) (or (not (= (select .cse0 |~#global~0.offset|) |~#a~0.offset|)) (not (= (select .cse1 |~#global~0.offset|) |~#a~0.base|)) (not (= (select .cse0 .cse2) |~#b~0.offset|)) (= |~#b~0.base| |~#a~0.base|) (not (= |~#b~0.base| (select .cse1 .cse2))) (let ((.cse4 (+ main_~pd~0.offset 4)) (.cse3 (select |#memory_$Pointer$.offset| main_~pd~0.base)) (.cse5 (select |#memory_$Pointer$.base| main_~pd~0.base))) (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= (select .cse3 .cse4) |~#b~0.offset|) (= |~#b~0.base| (select .cse5 .cse4)) (= |#memory_int| |old(#memory_int)|) (= (select .cse3 main_~pd~0.offset) |~#a~0.offset|) (= |~#a~0.base| (select .cse5 main_~pd~0.offset)) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|))))) [2020-09-21 10:21:31,086 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-09-21 10:21:31,087 INFO L264 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (let ((.cse0 (select |old(#memory_$Pointer$.offset)| |~#global~0.base|)) (.cse1 (select |old(#memory_$Pointer$.base)| |~#global~0.base|)) (.cse2 (+ |~#global~0.offset| 4))) (or (not (= (select .cse0 |~#global~0.offset|) |~#a~0.offset|)) (not (= (select .cse1 |~#global~0.offset|) |~#a~0.base|)) (not (= (select .cse0 .cse2) |~#b~0.offset|)) (and (= |assign2_#t~mem1.base| (select (select |old(#memory_$Pointer$.base)| |assign2_#in~pa.base|) |assign2_#in~pa.offset|)) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= (select (select |old(#memory_$Pointer$.offset)| |assign2_#in~pb.base|) |assign2_#in~pb.offset|) |assign2_#t~mem2.offset|) (= |assign2_#t~mem1.offset| (select (select |old(#memory_$Pointer$.offset)| |assign2_#in~pa.base|) |assign2_#in~pa.offset|)) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= (select (select |old(#memory_$Pointer$.base)| |assign2_#in~pb.base|) |assign2_#in~pb.offset|) |assign2_#t~mem2.base|)) (= |~#b~0.base| |~#a~0.base|) (not (= |~#b~0.base| (select .cse1 .cse2))))) [2020-09-21 10:21:31,087 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-21 10:21:31,087 INFO L268 CegarLoopResult]: For program point assign2FINAL(lines 14 17) no Hoare annotation was computed. [2020-09-21 10:21:31,087 INFO L264 CegarLoopResult]: At program point assign2ENTRY(lines 14 17) the Hoare annotation is: (let ((.cse0 (select |old(#memory_$Pointer$.offset)| |~#global~0.base|)) (.cse1 (select |old(#memory_$Pointer$.base)| |~#global~0.base|)) (.cse2 (+ |~#global~0.offset| 4))) (or (not (= (select .cse0 |~#global~0.offset|) |~#a~0.offset|)) (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|)) (not (= (select .cse1 |~#global~0.offset|) |~#a~0.base|)) (not (= (select .cse0 .cse2) |~#b~0.offset|)) (= |~#b~0.base| |~#a~0.base|) (not (= |~#b~0.base| (select .cse1 .cse2))))) [2020-09-21 10:21:31,087 INFO L268 CegarLoopResult]: For program point assign2EXIT(lines 14 17) no Hoare annotation was computed. [2020-09-21 10:21:31,088 INFO L268 CegarLoopResult]: For program point assignEXIT(lines 9 12) no Hoare annotation was computed. [2020-09-21 10:21:31,088 INFO L264 CegarLoopResult]: At program point assignENTRY(lines 9 12) the Hoare annotation is: (let ((.cse0 (select |old(#memory_$Pointer$.offset)| |~#global~0.base|)) (.cse1 (select |old(#memory_$Pointer$.base)| |~#global~0.base|)) (.cse2 (+ |~#global~0.offset| 4))) (or (not (= (select .cse0 |~#global~0.offset|) |~#a~0.offset|)) (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|)) (not (= (select .cse1 |~#global~0.offset|) |~#a~0.base|)) (not (= (select .cse0 .cse2) |~#b~0.offset|)) (= |~#b~0.base| |~#a~0.base|) (not (= |~#b~0.base| (select .cse1 .cse2))))) [2020-09-21 10:21:31,088 INFO L268 CegarLoopResult]: For program point assignFINAL(lines 9 12) no Hoare annotation was computed. [2020-09-21 10:21:31,105 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-21 10:21:31,106 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-09-21 10:21:31,107 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-09-21 10:21:31,107 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-21 10:21:31,110 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-21 10:21:31,110 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-21 10:21:31,111 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-21 10:21:31,111 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-21 10:21:31,115 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-21 10:21:31,116 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-09-21 10:21:31,116 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-09-21 10:21:31,116 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-21 10:21:31,117 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-21 10:21:31,117 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-21 10:21:31,118 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-21 10:21:31,118 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-21 10:21:31,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 10:21:31 BoogieIcfgContainer [2020-09-21 10:21:31,121 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 10:21:31,125 INFO L168 Benchmark]: Toolchain (without parser) took 3431.91 ms. Allocated memory was 142.6 MB in the beginning and 243.3 MB in the end (delta: 100.7 MB). Free memory was 103.9 MB in the beginning and 169.2 MB in the end (delta: -65.4 MB). Peak memory consumption was 106.9 MB. Max. memory is 7.1 GB. [2020-09-21 10:21:31,126 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 142.6 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-21 10:21:31,127 INFO L168 Benchmark]: CACSL2BoogieTranslator took 342.05 ms. Allocated memory is still 142.6 MB. Free memory was 103.2 MB in the beginning and 93.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-09-21 10:21:31,129 INFO L168 Benchmark]: Boogie Preprocessor took 139.01 ms. Allocated memory was 142.6 MB in the beginning and 205.5 MB in the end (delta: 62.9 MB). Free memory was 93.2 MB in the beginning and 182.9 MB in the end (delta: -89.7 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-09-21 10:21:31,130 INFO L168 Benchmark]: RCFGBuilder took 359.95 ms. Allocated memory is still 205.5 MB. Free memory was 182.9 MB in the beginning and 166.6 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. [2020-09-21 10:21:31,131 INFO L168 Benchmark]: TraceAbstraction took 2579.09 ms. Allocated memory was 205.5 MB in the beginning and 243.3 MB in the end (delta: 37.7 MB). Free memory was 166.6 MB in the beginning and 169.2 MB in the end (delta: -2.6 MB). Peak memory consumption was 106.8 MB. Max. memory is 7.1 GB. [2020-09-21 10:21:31,135 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 142.6 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 342.05 ms. Allocated memory is still 142.6 MB. Free memory was 103.2 MB in the beginning and 93.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 139.01 ms. Allocated memory was 142.6 MB in the beginning and 205.5 MB in the end (delta: 62.9 MB). Free memory was 93.2 MB in the beginning and 182.9 MB in the end (delta: -89.7 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 359.95 ms. Allocated memory is still 205.5 MB. Free memory was 182.9 MB in the beginning and 166.6 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2579.09 ms. Allocated memory was 205.5 MB in the beginning and 243.3 MB in the end (delta: 37.7 MB). Free memory was 166.6 MB in the beginning and 169.2 MB in the end (delta: -2.6 MB). Peak memory consumption was 106.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 31]: 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: 20]: Loop Invariant [2020-09-21 10:21:31,148 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-21 10:21:31,148 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-09-21 10:21:31,148 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-09-21 10:21:31,149 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-21 10:21:31,149 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-21 10:21:31,149 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-21 10:21:31,149 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-21 10:21:31,150 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-21 10:21:31,150 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-21 10:21:31,151 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-09-21 10:21:31,151 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-09-21 10:21:31,151 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-21 10:21:31,152 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-21 10:21:31,152 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-21 10:21:31,152 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-21 10:21:31,152 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ Derived loop invariant: (((!(a == \old(#memory_$Pointer$)[global][global]) || !(a == \old(#memory_$Pointer$)[global][global])) || !(\old(#memory_$Pointer$)[global][global + 4] == b)) || a == b) || !(\old(#memory_$Pointer$)[global][global + 4] == b) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.7s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 15 SDslu, 19 SDs, 0 SdLazy, 124 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred 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, 9 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 419 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 9 FomulaSimplificationsInter, 339 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 7259 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 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...