/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/sum_non_eq-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 13:46:15,221 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 13:46:15,231 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 13:46:15,261 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 13:46:15,262 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 13:46:15,266 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 13:46:15,270 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 13:46:15,287 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 13:46:15,292 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 13:46:15,296 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 13:46:15,299 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 13:46:15,303 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 13:46:15,303 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 13:46:15,309 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 13:46:15,314 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 13:46:15,317 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 13:46:15,320 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 13:46:15,324 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 13:46:15,326 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 13:46:15,338 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 13:46:15,348 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 13:46:15,354 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 13:46:15,357 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 13:46:15,358 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 13:46:15,361 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 13:46:15,376 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 13:46:15,377 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 13:46:15,378 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 13:46:15,379 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 13:46:15,400 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 13:46:15,401 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 13:46:15,404 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 13:46:15,404 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 13:46:15,404 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 13:46:15,405 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 13:46:15,405 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 13:46:15,405 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 13:46:15,406 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 13:46:15,406 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 13:46:15,406 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 13:46:15,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 13:46:15,407 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 13:46:15,407 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 13:46:15,407 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 13:46:15,408 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 13:46:15,408 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 13:46:15,408 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 13:46:15,408 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 13:46:15,409 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 13:46:15,409 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 13:46:15,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 13:46:15,410 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 13:46:15,410 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 13:46:15,410 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 13:46:15,410 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 13:46:15,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:46:15,411 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 13:46:15,411 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 13:46:15,412 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 13:46:15,835 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 13:46:15,854 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 13:46:15,860 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 13:46:15,863 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 13:46:15,865 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 13:46:15,866 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/sum_non_eq-2.c [2020-07-20 13:46:16,003 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66c86ba67/c091084c61ce4b4e833bc90abc1d63ae/FLAG3e15a97c1 [2020-07-20 13:46:16,862 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 13:46:16,863 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/sum_non_eq-2.c [2020-07-20 13:46:16,876 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66c86ba67/c091084c61ce4b4e833bc90abc1d63ae/FLAG3e15a97c1 [2020-07-20 13:46:16,918 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66c86ba67/c091084c61ce4b4e833bc90abc1d63ae [2020-07-20 13:46:16,942 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 13:46:16,949 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 13:46:16,955 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 13:46:16,956 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 13:46:16,964 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 13:46:16,967 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:46:16" (1/1) ... [2020-07-20 13:46:16,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52731fee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:46:16, skipping insertion in model container [2020-07-20 13:46:16,974 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:46:16" (1/1) ... [2020-07-20 13:46:16,989 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 13:46:17,028 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 13:46:17,342 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:46:17,352 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 13:46:17,377 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:46:17,402 INFO L208 MainTranslator]: Completed translation [2020-07-20 13:46:17,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:46:17 WrapperNode [2020-07-20 13:46:17,405 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 13:46:17,407 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 13:46:17,408 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 13:46:17,409 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 13:46:17,426 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:46:17" (1/1) ... [2020-07-20 13:46:17,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:46:17" (1/1) ... [2020-07-20 13:46:17,436 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:46:17" (1/1) ... [2020-07-20 13:46:17,437 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:46:17" (1/1) ... [2020-07-20 13:46:17,443 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:46:17" (1/1) ... [2020-07-20 13:46:17,445 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:46:17" (1/1) ... [2020-07-20 13:46:17,446 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:46:17" (1/1) ... [2020-07-20 13:46:17,447 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 13:46:17,448 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 13:46:17,448 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 13:46:17,448 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 13:46:17,449 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:46:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 13:46:17,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 13:46:17,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 13:46:17,684 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-07-20 13:46:17,684 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 13:46:17,684 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-07-20 13:46:17,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 13:46:17,687 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-07-20 13:46:17,688 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 13:46:17,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 13:46:17,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 13:46:17,962 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 13:46:17,963 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 13:46:17,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:46:17 BoogieIcfgContainer [2020-07-20 13:46:17,973 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 13:46:17,981 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 13:46:17,981 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 13:46:17,994 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 13:46:17,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:46:16" (1/3) ... [2020-07-20 13:46:18,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@705ac022 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:46:18, skipping insertion in model container [2020-07-20 13:46:18,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:46:17" (2/3) ... [2020-07-20 13:46:18,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@705ac022 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:46:18, skipping insertion in model container [2020-07-20 13:46:18,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:46:17" (3/3) ... [2020-07-20 13:46:18,012 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_non_eq-2.c [2020-07-20 13:46:18,039 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 13:46:18,055 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 13:46:18,085 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 13:46:18,164 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 13:46:18,164 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 13:46:18,165 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 13:46:18,165 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 13:46:18,165 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 13:46:18,165 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 13:46:18,166 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 13:46:18,166 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 13:46:18,192 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-07-20 13:46:18,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-20 13:46:18,203 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:46:18,205 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:46:18,206 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:46:18,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:46:18,215 INFO L82 PathProgramCache]: Analyzing trace with hash 2001781660, now seen corresponding path program 1 times [2020-07-20 13:46:18,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:46:18,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1222272523] [2020-07-20 13:46:18,227 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in