/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/nested_structure_ptr-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 10:21:00,024 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:21:00,028 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:21:00,057 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:21:00,057 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:21:00,059 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:21:00,060 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:21:00,062 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:21:00,064 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:21:00,066 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:21:00,067 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:21:00,068 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:21:00,069 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:21:00,070 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:21:00,071 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:21:00,073 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:21:00,074 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:21:00,075 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:21:00,078 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:21:00,080 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:21:00,082 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:21:00,084 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:21:00,085 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:21:00,086 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:21:00,090 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 10:21:00,090 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 10:21:00,090 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 10:21:00,092 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 10:21:00,092 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 10:21:00,093 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 10:21:00,094 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 10:21:00,095 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 10:21:00,096 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 10:21:00,099 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 10:21:00,101 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 10:21:00,101 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 10:21:00,102 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 10:21:00,102 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 10:21:00,102 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:21:00,105 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:21:00,106 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:21:00,107 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 10:21:00,156 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:21:00,157 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:21:00,159 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:21:00,160 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:21:00,160 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:21:00,160 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:21:00,161 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:21:00,161 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:21:00,161 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:21:00,161 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:21:00,163 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:21:00,163 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:21:00,163 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:21:00,164 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:21:00,164 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:21:00,164 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:21:00,164 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:21:00,165 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:21:00,165 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:21:00,165 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:21:00,166 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:21:00,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:21:00,167 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:21:00,167 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:21:00,167 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:21:00,167 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:21:00,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:21:00,168 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:21:00,168 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:21:00,168 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 10:21:00,633 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:21:00,657 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:21:00,663 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:21:00,665 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:21:00,665 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:21:00,667 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/nested_structure_ptr-2.i [2020-09-21 10:21:00,758 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/efc86a00d/bc8b499d3d67457f8500d813b65f0731/FLAG4ed1f4ac6 [2020-09-21 10:21:01,306 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:21:01,307 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/nested_structure_ptr-2.i [2020-09-21 10:21:01,316 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/efc86a00d/bc8b499d3d67457f8500d813b65f0731/FLAG4ed1f4ac6 [2020-09-21 10:21:01,640 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/efc86a00d/bc8b499d3d67457f8500d813b65f0731 [2020-09-21 10:21:01,657 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:21:01,663 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:21:01,667 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:21:01,667 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:21:01,671 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:21:01,672 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:21:01" (1/1) ... [2020-09-21 10:21:01,677 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d72532b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:21:01, skipping insertion in model container [2020-09-21 10:21:01,678 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:21:01" (1/1) ... [2020-09-21 10:21:01,690 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:21:01,719 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:21:01,949 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:21:01,964 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:21:01,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:21:02,006 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:21:02,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:21:02 WrapperNode [2020-09-21 10:21:02,007 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:21:02,008 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:21:02,008 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:21:02,008 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:21:02,106 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:21:02" (1/1) ... [2020-09-21 10:21:02,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:21:02" (1/1) ... [2020-09-21 10:21:02,118 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:21:02" (1/1) ... [2020-09-21 10:21:02,118 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:21:02" (1/1) ... [2020-09-21 10:21:02,134 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:21:02" (1/1) ... [2020-09-21 10:21:02,138 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:21:02" (1/1) ... [2020-09-21 10:21:02,140 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:21:02" (1/1) ... [2020-09-21 10:21:02,142 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:21:02,143 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:21:02,143 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:21:02,143 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:21:02,144 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:21:02" (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 10:21:02,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:21:02,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:21:02,212 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-21 10:21:02,213 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:21:02,213 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:21:02,213 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-21 10:21:02,213 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-21 10:21:02,214 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-09-21 10:21:02,214 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-09-21 10:21:02,214 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:21:02,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 10:21:02,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 10:21:02,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-21 10:21:02,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 10:21:02,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 10:21:02,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 10:21:02,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 10:21:02,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:21:02,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:21:02,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 10:21:02,494 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:21:02,496 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-21 10:21:02,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:21:02 BoogieIcfgContainer [2020-09-21 10:21:02,502 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:21:02,505 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:21:02,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:21:02,517 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:21:02,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:21:01" (1/3) ... [2020-09-21 10:21:02,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@525a38e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:21:02, skipping insertion in model container [2020-09-21 10:21:02,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:21:02" (2/3) ... [2020-09-21 10:21:02,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@525a38e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:21:02, skipping insertion in model container [2020-09-21 10:21:02,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:21:02" (3/3) ... [2020-09-21 10:21:02,528 INFO L109 eAbstractionObserver]: Analyzing ICFG nested_structure_ptr-2.i [2020-09-21 10:21:02,550 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:21:02,563 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 10:21:02,610 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 10:21:02,642 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:21:02,642 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:21:02,643 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:21:02,643 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:21:02,643 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:21:02,643 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:21:02,643 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:21:02,643 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:21:02,662 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-09-21 10:21:02,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-21 10:21:02,669 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:21:02,670 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:21:02,671 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:21:02,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:21:02,677 INFO L82 PathProgramCache]: Analyzing trace with hash -715594688, now seen corresponding path program 1 times [2020-09-21 10:21:02,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:21:02,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [488204580] [2020-09-21 10:21:02,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:21:02,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:03,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:21:03,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:21:03,100 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 10:21:03,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [488204580] [2020-09-21 10:21:03,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:21:03,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 10:21:03,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027401981] [2020-09-21 10:21:03,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 10:21:03,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:21:03,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 10:21:03,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 10:21:03,128 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 6 states. [2020-09-21 10:21:03,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:21:03,278 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2020-09-21 10:21:03,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 10:21:03,281 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-09-21 10:21:03,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:21:03,293 INFO L225 Difference]: With dead ends: 25 [2020-09-21 10:21:03,294 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 10:21:03,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-21 10:21:03,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 10:21:03,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 10:21:03,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 10:21:03,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 10:21:03,339 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-09-21 10:21:03,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:21:03,339 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 10:21:03,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 10:21:03,340 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 10:21:03,340 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 10:21:03,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:21:03,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-21 10:21:03,397 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-21 10:21:03,397 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-21 10:21:03,398 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-21 10:21:03,398 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-21 10:21:03,398 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-21 10:21:03,398 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-21 10:21:03,399 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-21 10:21:03,399 INFO L268 CegarLoopResult]: For program point L34-1(line 34) no Hoare annotation was computed. [2020-09-21 10:21:03,399 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 27 36) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-09-21 10:21:03,399 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 27 36) no Hoare annotation was computed. [2020-09-21 10:21:03,399 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 27 36) no Hoare annotation was computed. [2020-09-21 10:21:03,400 INFO L264 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: (= |main_#t~mem4| 4) [2020-09-21 10:21:03,400 INFO L268 CegarLoopResult]: For program point L3-2(lines 2 7) no Hoare annotation was computed. [2020-09-21 10:21:03,400 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 2 7) the Hoare annotation is: true [2020-09-21 10:21:03,400 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 2 7) no Hoare annotation was computed. [2020-09-21 10:21:03,401 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-21 10:21:03,401 INFO L268 CegarLoopResult]: For program point L3(lines 3 5) no Hoare annotation was computed. [2020-09-21 10:21:03,401 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-09-21 10:21:03,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 10:21:03 BoogieIcfgContainer [2020-09-21 10:21:03,409 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 10:21:03,413 INFO L168 Benchmark]: Toolchain (without parser) took 1752.69 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 103.3 MB in the beginning and 124.8 MB in the end (delta: -21.5 MB). Peak memory consumption was 41.9 MB. Max. memory is 7.1 GB. [2020-09-21 10:21:03,414 INFO L168 Benchmark]: CDTParser took 0.62 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-21 10:21:03,415 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.05 ms. Allocated memory is still 140.0 MB. Free memory was 102.6 MB in the beginning and 92.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-09-21 10:21:03,417 INFO L168 Benchmark]: Boogie Preprocessor took 134.51 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 92.3 MB in the beginning and 181.4 MB in the end (delta: -89.1 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-09-21 10:21:03,418 INFO L168 Benchmark]: RCFGBuilder took 361.02 ms. Allocated memory is still 203.4 MB. Free memory was 181.4 MB in the beginning and 164.9 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB. [2020-09-21 10:21:03,419 INFO L168 Benchmark]: TraceAbstraction took 903.99 ms. Allocated memory is still 203.4 MB. Free memory was 164.2 MB in the beginning and 124.8 MB in the end (delta: 39.4 MB). Peak memory consumption was 39.4 MB. Max. memory is 7.1 GB. [2020-09-21 10:21:03,423 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.62 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 341.05 ms. Allocated memory is still 140.0 MB. Free memory was 102.6 MB in the beginning and 92.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 134.51 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 92.3 MB in the beginning and 181.4 MB in the end (delta: -89.1 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 361.02 ms. Allocated memory is still 203.4 MB. Free memory was 181.4 MB in the beginning and 164.9 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 903.99 ms. Allocated memory is still 203.4 MB. Free memory was 164.2 MB in the beginning and 124.8 MB in the end (delta: 39.4 MB). Peak memory consumption was 39.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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 4 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 8 SDslu, 29 SDs, 0 SdLazy, 21 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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, 6 LocationsWithAnnotation, 6 PreInvPairs, 6 NumberOfFragments, 19 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 24 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 234 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...