/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 --rcfgbuilder.size.of.a.code.block SingleStatement --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-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 14:58:20,944 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 14:58:20,950 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 14:58:20,993 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 14:58:20,993 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 14:58:21,003 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 14:58:21,006 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 14:58:21,010 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 14:58:21,013 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 14:58:21,016 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 14:58:21,017 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 14:58:21,019 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 14:58:21,020 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 14:58:21,023 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 14:58:21,025 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 14:58:21,027 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 14:58:21,029 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 14:58:21,031 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 14:58:21,032 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 14:58:21,041 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 14:58:21,043 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 14:58:21,044 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 14:58:21,046 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 14:58:21,047 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 14:58:21,059 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-24 14:58:21,082 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 14:58:21,083 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 14:58:21,085 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 14:58:21,086 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 [2020-09-24 14:58:21,132 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 14:58:21,132 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 14:58:21,134 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 14:58:21,135 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 14:58:21,135 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 14:58:21,135 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 14:58:21,136 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 14:58:21,136 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 14:58:21,136 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 14:58:21,136 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 14:58:21,137 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 14:58:21,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 14:58:21,138 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 14:58:21,138 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 14:58:21,138 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 14:58:21,139 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 14:58:21,139 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 14:58:21,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 14:58:21,139 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 14:58:21,139 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 14:58:21,140 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 14:58:21,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 14:58:21,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 14:58:21,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 14:58:21,140 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 14:58:21,141 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 14:58:21,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 14:58:21,141 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 14:58:21,141 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 14:58:21,141 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.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-24 14:58:21,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 14:58:21,608 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 14:58:21,612 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 14:58:21,614 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 14:58:21,615 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 14:58:21,616 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/nested_structure-1.i [2020-09-24 14:58:21,703 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/479105048/681b228338474709a6c2907da4be5adf/FLAG61842733c [2020-09-24 14:58:22,268 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 14:58:22,268 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/nested_structure-1.i [2020-09-24 14:58:22,276 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/479105048/681b228338474709a6c2907da4be5adf/FLAG61842733c [2020-09-24 14:58:22,622 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/479105048/681b228338474709a6c2907da4be5adf [2020-09-24 14:58:22,637 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 14:58:22,643 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 14:58:22,646 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 14:58:22,646 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 14:58:22,651 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 14:58:22,652 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:58:22" (1/1) ... [2020-09-24 14:58:22,658 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a765448 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:58:22, skipping insertion in model container [2020-09-24 14:58:22,659 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:58:22" (1/1) ... [2020-09-24 14:58:22,669 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 14:58:22,695 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 14:58:22,911 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:58:22,926 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 14:58:22,949 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:58:22,973 INFO L208 MainTranslator]: Completed translation [2020-09-24 14:58:22,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:58:22 WrapperNode [2020-09-24 14:58:22,974 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 14:58:22,975 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 14:58:22,975 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 14:58:22,975 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 14:58:23,067 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:58:22" (1/1) ... [2020-09-24 14:58:23,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:58:22" (1/1) ... [2020-09-24 14:58:23,078 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:58:22" (1/1) ... [2020-09-24 14:58:23,079 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:58:22" (1/1) ... [2020-09-24 14:58:23,099 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:58:22" (1/1) ... [2020-09-24 14:58:23,101 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:58:22" (1/1) ... [2020-09-24 14:58:23,108 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:58:22" (1/1) ... [2020-09-24 14:58:23,111 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 14:58:23,111 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 14:58:23,111 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 14:58:23,111 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 14:58:23,112 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:58:22" (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 [2020-09-24 14:58:23,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 14:58:23,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 14:58:23,184 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-09-24 14:58:23,184 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 14:58:23,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 14:58:23,185 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-09-24 14:58:23,185 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 14:58:23,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 14:58:23,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 14:58:23,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-24 14:58:23,187 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 14:58:23,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 14:58:23,187 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 14:58:23,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 14:58:23,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 14:58:23,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 14:58:23,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 14:58:23,457 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 14:58:23,457 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 14:58:23,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:58:23 BoogieIcfgContainer [2020-09-24 14:58:23,464 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 14:58:23,465 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 14:58:23,466 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 14:58:23,469 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 14:58:23,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 02:58:22" (1/3) ... [2020-09-24 14:58:23,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b7a9035 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:58:23, skipping insertion in model container [2020-09-24 14:58:23,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:58:22" (2/3) ... [2020-09-24 14:58:23,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b7a9035 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:58:23, skipping insertion in model container [2020-09-24 14:58:23,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:58:23" (3/3) ... [2020-09-24 14:58:23,474 INFO L109 eAbstractionObserver]: Analyzing ICFG nested_structure-1.i [2020-09-24 14:58:23,504 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 14:58:23,515 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 14:58:23,558 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 14:58:23,586 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 14:58:23,586 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 14:58:23,586 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 14:58:23,586 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 14:58:23,587 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 14:58:23,587 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 14:58:23,587 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 14:58:23,587 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 14:58:23,608 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-09-24 14:58:23,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-24 14:58:23,617 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:58:23,618 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:58:23,618 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:58:23,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:58:23,625 INFO L82 PathProgramCache]: Analyzing trace with hash -222009229, now seen corresponding path program 1 times [2020-09-24 14:58:23,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:58:23,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [446349211] [2020-09-24 14:58:23,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:58:23,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:24,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:58:24,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:24,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:58:24,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [446349211] [2020-09-24 14:58:24,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:58:24,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-09-24 14:58:24,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219045538] [2020-09-24 14:58:24,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 14:58:24,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:58:24,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 14:58:24,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-09-24 14:58:24,533 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 16 states. [2020-09-24 14:58:25,167 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2020-09-24 14:58:25,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:58:25,594 INFO L93 Difference]: Finished difference Result 57 states and 56 transitions. [2020-09-24 14:58:25,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 14:58:25,595 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 26 [2020-09-24 14:58:25,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:58:25,605 INFO L225 Difference]: With dead ends: 57 [2020-09-24 14:58:25,606 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 14:58:25,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=167, Invalid=703, Unknown=0, NotChecked=0, Total=870 [2020-09-24 14:58:25,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 14:58:25,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 14:58:25,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 14:58:25,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 14:58:25,640 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2020-09-24 14:58:25,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:58:25,641 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 14:58:25,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 14:58:25,641 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 14:58:25,641 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 14:58:25,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 14:58:25,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 14:58:25,695 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-24 14:58:25,696 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-24 14:58:25,696 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-24 14:58:25,696 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|)) [2020-09-24 14:58:25,696 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 14:58:25,697 INFO L268 CegarLoopResult]: For program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2020-09-24 14:58:25,697 INFO L268 CegarLoopResult]: For program point __blast_assertEXIT(lines 7 10) no Hoare annotation was computed. [2020-09-24 14:58:25,697 INFO L268 CegarLoopResult]: For program point __blast_assertFINAL(lines 7 10) no Hoare annotation was computed. [2020-09-24 14:58:25,697 INFO L271 CegarLoopResult]: At program point __blast_assertENTRY(lines 7 10) the Hoare annotation is: true [2020-09-24 14:58:25,698 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 14:58:25,698 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 14:58:25,698 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 14:58:25,698 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 14:58:25,698 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-09-24 14:58:25,699 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-09-24 14:58:25,699 INFO L268 CegarLoopResult]: For program point L29-1(line 29) no Hoare annotation was computed. [2020-09-24 14:58:25,699 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-09-24 14:58:25,699 INFO L268 CegarLoopResult]: For program point L29-2(line 29) no Hoare annotation was computed. [2020-09-24 14:58:25,700 INFO L268 CegarLoopResult]: For program point L27-1(line 27) no Hoare annotation was computed. [2020-09-24 14:58:25,700 INFO L268 CegarLoopResult]: For program point L29-3(line 29) no Hoare annotation was computed. [2020-09-24 14:58:25,700 INFO L268 CegarLoopResult]: For program point L27-2(line 27) no Hoare annotation was computed. [2020-09-24 14:58:25,700 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 24 32) no Hoare annotation was computed. [2020-09-24 14:58:25,700 INFO L268 CegarLoopResult]: For program point L27-3(line 27) no Hoare annotation was computed. [2020-09-24 14:58:25,701 INFO L268 CegarLoopResult]: For program point L27-4(line 27) no Hoare annotation was computed. [2020-09-24 14:58:25,701 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 24 32) no Hoare annotation was computed. [2020-09-24 14:58:25,701 INFO L268 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-09-24 14:58:25,701 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 24 32) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-09-24 14:58:25,701 INFO L268 CegarLoopResult]: For program point L30-1(line 30) no Hoare annotation was computed. [2020-09-24 14:58:25,702 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-09-24 14:58:25,702 INFO L268 CegarLoopResult]: For program point L30-2(line 30) no Hoare annotation was computed. [2020-09-24 14:58:25,702 INFO L268 CegarLoopResult]: For program point L28-1(line 28) no Hoare annotation was computed. [2020-09-24 14:58:25,702 INFO L268 CegarLoopResult]: For program point L30-3(line 30) no Hoare annotation was computed. [2020-09-24 14:58:25,702 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-09-24 14:58:25,703 INFO L268 CegarLoopResult]: For program point L28-2(line 28) no Hoare annotation was computed. [2020-09-24 14:58:25,703 INFO L268 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2020-09-24 14:58:25,703 INFO L264 CegarLoopResult]: At program point L30-5(line 30) the Hoare annotation is: false [2020-09-24 14:58:25,703 INFO L268 CegarLoopResult]: For program point L28-3(line 28) no Hoare annotation was computed. [2020-09-24 14:58:25,704 INFO L268 CegarLoopResult]: For program point L30-6(line 30) no Hoare annotation was computed. [2020-09-24 14:58:25,704 INFO L268 CegarLoopResult]: For program point L26-2(line 26) no Hoare annotation was computed. [2020-09-24 14:58:25,704 INFO L268 CegarLoopResult]: For program point L28-4(line 28) no Hoare annotation was computed. [2020-09-24 14:58:25,704 INFO L268 CegarLoopResult]: For program point L30-7(line 30) no Hoare annotation was computed. [2020-09-24 14:58:25,704 INFO L268 CegarLoopResult]: For program point L26-3(line 26) no Hoare annotation was computed. [2020-09-24 14:58:25,705 INFO L268 CegarLoopResult]: For program point L30-8(line 30) no Hoare annotation was computed. [2020-09-24 14:58:25,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 02:58:25 BoogieIcfgContainer [2020-09-24 14:58:25,713 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 14:58:25,715 INFO L168 Benchmark]: Toolchain (without parser) took 3076.83 ms. Allocated memory was 140.5 MB in the beginning and 236.5 MB in the end (delta: 95.9 MB). Free memory was 103.8 MB in the beginning and 96.7 MB in the end (delta: 7.1 MB). Peak memory consumption was 103.0 MB. Max. memory is 7.1 GB. [2020-09-24 14:58:25,716 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 14:58:25,718 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.37 ms. Allocated memory is still 140.5 MB. Free memory was 103.1 MB in the beginning and 93.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-09-24 14:58:25,719 INFO L168 Benchmark]: Boogie Preprocessor took 136.17 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 93.1 MB in the beginning and 181.4 MB in the end (delta: -88.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-09-24 14:58:25,720 INFO L168 Benchmark]: RCFGBuilder took 352.70 ms. Allocated memory is still 203.4 MB. Free memory was 181.4 MB in the beginning and 164.1 MB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 7.1 GB. [2020-09-24 14:58:25,721 INFO L168 Benchmark]: TraceAbstraction took 2247.74 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 164.1 MB in the beginning and 96.7 MB in the end (delta: 67.4 MB). Peak memory consumption was 100.4 MB. Max. memory is 7.1 GB. [2020-09-24 14:58:25,725 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 328.37 ms. Allocated memory is still 140.5 MB. Free memory was 103.1 MB in the beginning and 93.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 136.17 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 93.1 MB in the beginning and 181.4 MB in the end (delta: -88.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 352.70 ms. Allocated memory is still 203.4 MB. Free memory was 181.4 MB in the beginning and 164.1 MB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2247.74 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 164.1 MB in the beginning and 96.7 MB in the end (delta: 67.4 MB). Peak memory consumption was 100.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.0s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 20 SDtfs, 77 SDslu, 192 SDs, 0 SdLazy, 201 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred 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, 17 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 7 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 11275 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...