/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.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 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/ss2f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-19 23:39:09,325 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 23:39:09,327 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 23:39:09,339 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 23:39:09,339 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 23:39:09,340 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 23:39:09,342 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 23:39:09,343 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 23:39:09,345 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 23:39:09,346 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 23:39:09,347 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 23:39:09,348 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 23:39:09,348 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 23:39:09,349 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 23:39:09,350 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 23:39:09,351 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 23:39:09,352 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 23:39:09,353 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 23:39:09,354 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 23:39:09,356 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 23:39:09,358 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 23:39:09,359 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 23:39:09,360 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 23:39:09,361 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 23:39:09,363 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-19 23:39:09,364 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-19 23:39:09,364 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-19 23:39:09,365 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-19 23:39:09,365 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-19 23:39:09,366 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-19 23:39:09,366 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-19 23:39:09,367 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-19 23:39:09,368 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-19 23:39:09,368 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-19 23:39:09,369 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-19 23:39:09,370 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-19 23:39:09,370 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-19 23:39:09,370 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-19 23:39:09,371 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 23:39:09,371 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 23:39:09,372 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 23:39:09,373 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 [2020-07-19 23:39:09,398 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 23:39:09,398 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 23:39:09,399 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 23:39:09,399 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 23:39:09,400 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 23:39:09,400 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 23:39:09,400 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 23:39:09,400 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 23:39:09,401 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 23:39:09,401 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 23:39:09,401 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 23:39:09,401 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 23:39:09,401 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 23:39:09,402 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 23:39:09,402 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 23:39:09,402 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 23:39:09,402 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 23:39:09,402 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 23:39:09,402 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 23:39:09,403 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 23:39:09,403 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 23:39:09,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 23:39:09,404 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 23:39:09,405 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 23:39:09,405 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 23:39:09,405 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 23:39:09,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 23:39:09,405 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 23:39:09,405 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 23:39:09,406 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-19 23:39:09,681 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 23:39:09,697 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 23:39:09,701 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 23:39:09,702 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 23:39:09,702 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 23:39:09,703 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ss2f.c [2020-07-19 23:39:09,762 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86555cc6d/6e20ff1171844afc825a4995b3991ca4/FLAGeaa580847 [2020-07-19 23:39:10,213 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 23:39:10,214 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ss2f.c [2020-07-19 23:39:10,226 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86555cc6d/6e20ff1171844afc825a4995b3991ca4/FLAGeaa580847 [2020-07-19 23:39:10,587 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86555cc6d/6e20ff1171844afc825a4995b3991ca4 [2020-07-19 23:39:10,597 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 23:39:10,601 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 23:39:10,602 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 23:39:10,602 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 23:39:10,605 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 23:39:10,606 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:39:10" (1/1) ... [2020-07-19 23:39:10,609 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7526dc3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:39:10, skipping insertion in model container [2020-07-19 23:39:10,609 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:39:10" (1/1) ... [2020-07-19 23:39:10,617 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 23:39:10,640 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 23:39:10,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 23:39:10,838 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 23:39:10,863 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 23:39:10,879 INFO L208 MainTranslator]: Completed translation [2020-07-19 23:39:10,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:39:10 WrapperNode [2020-07-19 23:39:10,879 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 23:39:10,880 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 23:39:10,880 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 23:39:10,880 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 23:39:10,973 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:39:10" (1/1) ... [2020-07-19 23:39:10,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:39:10" (1/1) ... [2020-07-19 23:39:10,982 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:39:10" (1/1) ... [2020-07-19 23:39:10,982 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:39:10" (1/1) ... [2020-07-19 23:39:10,992 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:39:10" (1/1) ... [2020-07-19 23:39:10,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:39:10" (1/1) ... [2020-07-19 23:39:11,000 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:39:10" (1/1) ... [2020-07-19 23:39:11,003 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 23:39:11,003 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 23:39:11,003 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 23:39:11,004 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 23:39:11,004 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:39:10" (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 [2020-07-19 23:39:11,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 23:39:11,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 23:39:11,072 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-19 23:39:11,072 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-19 23:39:11,073 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 23:39:11,073 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 23:39:11,073 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-19 23:39:11,073 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-19 23:39:11,073 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-19 23:39:11,073 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-19 23:39:11,074 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-19 23:39:11,074 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 23:39:11,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-19 23:39:11,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-19 23:39:11,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-19 23:39:11,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-19 23:39:11,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-19 23:39:11,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 23:39:11,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 23:39:11,391 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 23:39:11,392 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-07-19 23:39:11,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:39:11 BoogieIcfgContainer [2020-07-19 23:39:11,396 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 23:39:11,398 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 23:39:11,398 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 23:39:11,401 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 23:39:11,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 11:39:10" (1/3) ... [2020-07-19 23:39:11,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@111e8b4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:39:11, skipping insertion in model container [2020-07-19 23:39:11,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:39:10" (2/3) ... [2020-07-19 23:39:11,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@111e8b4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:39:11, skipping insertion in model container [2020-07-19 23:39:11,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:39:11" (3/3) ... [2020-07-19 23:39:11,405 INFO L109 eAbstractionObserver]: Analyzing ICFG ss2f.c [2020-07-19 23:39:11,417 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 23:39:11,425 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-19 23:39:11,441 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-19 23:39:11,467 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 23:39:11,467 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 23:39:11,467 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 23:39:11,467 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 23:39:11,467 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 23:39:11,468 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 23:39:11,468 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 23:39:11,468 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 23:39:11,488 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-07-19 23:39:11,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-19 23:39:11,495 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:39:11,496 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, 1, 1, 1, 1] [2020-07-19 23:39:11,497 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:39:11,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:39:11,504 INFO L82 PathProgramCache]: Analyzing trace with hash -96589013, now seen corresponding path program 1 times [2020-07-19 23:39:11,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:39:11,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280957618] [2020-07-19 23:39:11,515 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@552d7ee [2020-07-19 23:39:11,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:39:11,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:39:11,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:39:11,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:39:11,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280957618] [2020-07-19 23:39:11,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:39:11,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-19 23:39:11,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085847652] [2020-07-19 23:39:11,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-19 23:39:11,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:39:11,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-19 23:39:11,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-19 23:39:11,763 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2020-07-19 23:39:11,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:39:11,897 INFO L93 Difference]: Finished difference Result 82 states and 113 transitions. [2020-07-19 23:39:11,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-19 23:39:11,899 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-07-19 23:39:11,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:39:11,908 INFO L225 Difference]: With dead ends: 82 [2020-07-19 23:39:11,909 INFO L226 Difference]: Without dead ends: 41 [2020-07-19 23:39:11,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-19 23:39:11,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-07-19 23:39:11,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-07-19 23:39:11,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-19 23:39:11,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2020-07-19 23:39:11,955 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 30 [2020-07-19 23:39:11,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:39:11,956 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2020-07-19 23:39:11,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-19 23:39:11,957 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2020-07-19 23:39:11,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-19 23:39:11,958 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:39:11,958 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, 1, 1, 1, 1] [2020-07-19 23:39:11,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-19 23:39:11,959 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:39:11,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:39:11,960 INFO L82 PathProgramCache]: Analyzing trace with hash -552343525, now seen corresponding path program 1 times [2020-07-19 23:39:11,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:39:11,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711605867] [2020-07-19 23:39:11,961 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@552d7ee [2020-07-19 23:39:11,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:39:12,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:39:12,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:39:12,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:39:12,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711605867] [2020-07-19 23:39:12,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:39:12,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-19 23:39:12,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450120057] [2020-07-19 23:39:12,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-19 23:39:12,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:39:12,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-19 23:39:12,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-19 23:39:12,088 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 5 states. [2020-07-19 23:39:12,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:39:12,312 INFO L93 Difference]: Finished difference Result 83 states and 101 transitions. [2020-07-19 23:39:12,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-19 23:39:12,313 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-07-19 23:39:12,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:39:12,317 INFO L225 Difference]: With dead ends: 83 [2020-07-19 23:39:12,317 INFO L226 Difference]: Without dead ends: 57 [2020-07-19 23:39:12,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-19 23:39:12,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-07-19 23:39:12,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 47. [2020-07-19 23:39:12,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-07-19 23:39:12,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2020-07-19 23:39:12,335 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 30 [2020-07-19 23:39:12,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:39:12,336 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2020-07-19 23:39:12,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-19 23:39:12,336 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2020-07-19 23:39:12,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-19 23:39:12,338 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:39:12,338 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:39:12,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-19 23:39:12,338 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:39:12,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:39:12,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1488976591, now seen corresponding path program 1 times [2020-07-19 23:39:12,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:39:12,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329390723] [2020-07-19 23:39:12,340 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@552d7ee [2020-07-19 23:39:12,388 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-19 23:39:12,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1173830311] [2020-07-19 23:39:12,389 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5a579282 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:39:12,588 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5a579282 issued 4 check-sat command(s) [2020-07-19 23:39:12,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-19 23:39:12,589 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 23:39:12,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 23:39:12,618 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 23:39:12,653 INFO L174 FreeRefinementEngine]: Strategy CAMEL_SMT_AM found a feasible trace [2020-07-19 23:39:12,654 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-19 23:39:12,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-07-19 23:39:12,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 11:39:12 BoogieIcfgContainer [2020-07-19 23:39:12,914 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-19 23:39:12,917 INFO L168 Benchmark]: Toolchain (without parser) took 2317.14 ms. Allocated memory was 138.4 MB in the beginning and 235.4 MB in the end (delta: 97.0 MB). Free memory was 103.0 MB in the beginning and 187.7 MB in the end (delta: -84.6 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-07-19 23:39:12,918 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory is still 121.1 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-19 23:39:12,918 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.87 ms. Allocated memory is still 138.4 MB. Free memory was 102.6 MB in the beginning and 91.5 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2020-07-19 23:39:12,920 INFO L168 Benchmark]: Boogie Preprocessor took 123.04 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 91.5 MB in the beginning and 180.2 MB in the end (delta: -88.6 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2020-07-19 23:39:12,920 INFO L168 Benchmark]: RCFGBuilder took 393.30 ms. Allocated memory is still 202.4 MB. Free memory was 180.2 MB in the beginning and 159.2 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. [2020-07-19 23:39:12,921 INFO L168 Benchmark]: TraceAbstraction took 1516.22 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 158.2 MB in the beginning and 187.7 MB in the end (delta: -29.5 MB). Peak memory consumption was 3.6 MB. Max. memory is 7.1 GB. [2020-07-19 23:39:12,925 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 138.4 MB. Free memory is still 121.1 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 277.87 ms. Allocated memory is still 138.4 MB. Free memory was 102.6 MB in the beginning and 91.5 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.04 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 91.5 MB in the beginning and 180.2 MB in the end (delta: -88.6 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 393.30 ms. Allocated memory is still 202.4 MB. Free memory was 180.2 MB in the beginning and 159.2 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1516.22 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 158.2 MB in the beginning and 187.7 MB in the end (delta: -29.5 MB). Peak memory consumption was 3.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; VAL [\old(N)=5, N=0] [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L11] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L25] int i; [L26] long long sum[1]; [L27] long long *a = malloc(sizeof(long long)*N); [L29] sum[0] = 0 [L30] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(long long)*N)={-1:0}, N=1, sum={2:0}] [L30] COND TRUE i