/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 NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/sina5f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 11:47:33,487 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 11:47:33,490 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 11:47:33,509 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 11:47:33,510 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 11:47:33,512 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 11:47:33,514 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 11:47:33,527 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 11:47:33,528 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 11:47:33,531 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 11:47:33,532 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 11:47:33,534 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 11:47:33,534 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 11:47:33,537 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 11:47:33,540 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 11:47:33,542 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 11:47:33,544 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 11:47:33,546 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 11:47:33,547 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 11:47:33,552 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 11:47:33,558 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 11:47:33,563 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 11:47:33,564 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 11:47:33,565 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 11:47:33,567 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 11:47:33,568 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 11:47:33,568 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 11:47:33,571 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 11:47:33,571 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 11:47:33,572 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 11:47:33,573 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 11:47:33,574 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 11:47:33,575 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 11:47:33,575 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 11:47:33,577 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 11:47:33,577 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 11:47:33,578 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 11:47:33,578 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 11:47:33,578 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 11:47:33,579 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 11:47:33,580 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 11:47:33,581 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 11:47:33,600 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 11:47:33,600 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 11:47:33,602 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 11:47:33,602 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 11:47:33,602 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 11:47:33,603 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 11:47:33,603 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 11:47:33,603 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 11:47:33,603 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 11:47:33,604 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 11:47:33,605 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 11:47:33,605 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 11:47:33,605 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 11:47:33,606 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 11:47:33,606 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 11:47:33,606 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 11:47:33,606 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 11:47:33,606 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 11:47:33,607 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 11:47:33,607 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 11:47:33,607 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 11:47:33,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:47:33,607 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 11:47:33,608 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 11:47:33,608 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 11:47:33,608 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 11:47:33,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:47:33,608 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 11:47:33,609 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 11:47:33,609 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 -> NOT_INCREMENTALLY [2020-07-20 11:47:33,890 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 11:47:33,903 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 11:47:33,907 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 11:47:33,909 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 11:47:33,909 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 11:47:33,910 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sina5f.c [2020-07-20 11:47:33,984 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c65755461/a2e5ce61fec0428bb23e2e7959728e06/FLAG3dbefbf0b [2020-07-20 11:47:34,524 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 11:47:34,525 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/sina5f.c [2020-07-20 11:47:34,531 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c65755461/a2e5ce61fec0428bb23e2e7959728e06/FLAG3dbefbf0b [2020-07-20 11:47:34,907 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c65755461/a2e5ce61fec0428bb23e2e7959728e06 [2020-07-20 11:47:34,920 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 11:47:34,924 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 11:47:34,929 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 11:47:34,930 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 11:47:34,933 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 11:47:34,935 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:47:34" (1/1) ... [2020-07-20 11:47:34,938 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@509fad81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:47:34, skipping insertion in model container [2020-07-20 11:47:34,938 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:47:34" (1/1) ... [2020-07-20 11:47:34,947 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 11:47:34,965 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 11:47:35,166 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:47:35,175 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 11:47:35,198 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:47:35,303 INFO L208 MainTranslator]: Completed translation [2020-07-20 11:47:35,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:47:35 WrapperNode [2020-07-20 11:47:35,304 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 11:47:35,304 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 11:47:35,305 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 11:47:35,305 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 11:47:35,316 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:47:35" (1/1) ... [2020-07-20 11:47:35,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:47:35" (1/1) ... [2020-07-20 11:47:35,326 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:47:35" (1/1) ... [2020-07-20 11:47:35,326 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:47:35" (1/1) ... [2020-07-20 11:47:35,337 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:47:35" (1/1) ... [2020-07-20 11:47:35,344 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:47:35" (1/1) ... [2020-07-20 11:47:35,346 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:47:35" (1/1) ... [2020-07-20 11:47:35,349 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 11:47:35,350 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 11:47:35,350 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 11:47:35,350 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 11:47:35,351 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:47:35" (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 11:47:35,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 11:47:35,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 11:47:35,415 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 11:47:35,415 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 11:47:35,415 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 11:47:35,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 11:47:35,416 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 11:47:35,416 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 11:47:35,416 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 11:47:35,416 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 11:47:35,416 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 11:47:35,416 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 11:47:35,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 11:47:35,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 11:47:35,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 11:47:35,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 11:47:35,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 11:47:35,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 11:47:35,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 11:47:35,726 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 11:47:35,726 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-07-20 11:47:35,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:47:35 BoogieIcfgContainer [2020-07-20 11:47:35,731 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 11:47:35,734 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 11:47:35,734 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 11:47:35,737 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 11:47:35,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 11:47:34" (1/3) ... [2020-07-20 11:47:35,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2023ea6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:47:35, skipping insertion in model container [2020-07-20 11:47:35,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:47:35" (2/3) ... [2020-07-20 11:47:35,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2023ea6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:47:35, skipping insertion in model container [2020-07-20 11:47:35,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:47:35" (3/3) ... [2020-07-20 11:47:35,741 INFO L109 eAbstractionObserver]: Analyzing ICFG sina5f.c [2020-07-20 11:47:35,754 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 11:47:35,762 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 11:47:35,777 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 11:47:35,805 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 11:47:35,805 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 11:47:35,806 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 11:47:35,806 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 11:47:35,806 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 11:47:35,806 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 11:47:35,806 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 11:47:35,807 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 11:47:35,826 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-07-20 11:47:35,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-20 11:47:35,840 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:47:35,842 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] [2020-07-20 11:47:35,845 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:47:35,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:47:35,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1994596369, now seen corresponding path program 1 times [2020-07-20 11:47:35,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:47:35,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [637889570] [2020-07-20 11:47:35,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-07-20 11:47:35,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:47:35,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 11:47:36,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:47:36,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:47:36,033 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:47:36,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [637889570] [2020-07-20 11:47:36,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:47:36,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 11:47:36,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264990259] [2020-07-20 11:47:36,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 11:47:36,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:47:36,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 11:47:36,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 11:47:36,056 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2020-07-20 11:47:36,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:47:36,082 INFO L93 Difference]: Finished difference Result 76 states and 103 transitions. [2020-07-20 11:47:36,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 11:47:36,083 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 28 [2020-07-20 11:47:36,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:47:36,090 INFO L225 Difference]: With dead ends: 76 [2020-07-20 11:47:36,091 INFO L226 Difference]: Without dead ends: 38 [2020-07-20 11:47:36,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 11:47:36,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-07-20 11:47:36,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-07-20 11:47:36,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-07-20 11:47:36,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-07-20 11:47:36,147 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 28 [2020-07-20 11:47:36,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:47:36,148 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-07-20 11:47:36,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 11:47:36,148 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-07-20 11:47:36,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-20 11:47:36,150 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:47:36,150 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] [2020-07-20 11:47:36,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:47:36,364 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:47:36,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:47:36,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1530390023, now seen corresponding path program 1 times [2020-07-20 11:47:36,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:47:36,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137286247] [2020-07-20 11:47:36,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:47:36,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:47:36,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 11:47:36,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:47:36,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:47:36,546 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:47:36,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137286247] [2020-07-20 11:47:36,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:47:36,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 11:47:36,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91319353] [2020-07-20 11:47:36,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 11:47:36,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:47:36,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 11:47:36,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-20 11:47:36,553 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 4 states. [2020-07-20 11:47:36,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:47:36,691 INFO L93 Difference]: Finished difference Result 75 states and 90 transitions. [2020-07-20 11:47:36,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 11:47:36,693 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-07-20 11:47:36,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:47:36,696 INFO L225 Difference]: With dead ends: 75 [2020-07-20 11:47:36,697 INFO L226 Difference]: Without dead ends: 52 [2020-07-20 11:47:36,698 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-20 11:47:36,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-07-20 11:47:36,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 43. [2020-07-20 11:47:36,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-07-20 11:47:36,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2020-07-20 11:47:36,715 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 28 [2020-07-20 11:47:36,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:47:36,715 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2020-07-20 11:47:36,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 11:47:36,716 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2020-07-20 11:47:36,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-20 11:47:36,717 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:47:36,718 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] [2020-07-20 11:47:36,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:47:36,931 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:47:36,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:47:36,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1357692925, now seen corresponding path program 1 times [2020-07-20 11:47:36,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:47:36,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858173343] [2020-07-20 11:47:36,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:47:37,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 11:47:37,001 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 11:47:37,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 11:47:37,030 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 11:47:37,069 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 11:47:37,070 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 11:47:37,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:47:37,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 11:47:37 BoogieIcfgContainer [2020-07-20 11:47:37,360 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 11:47:37,363 INFO L168 Benchmark]: Toolchain (without parser) took 2440.31 ms. Allocated memory was 144.7 MB in the beginning and 233.8 MB in the end (delta: 89.1 MB). Free memory was 102.0 MB in the beginning and 204.4 MB in the end (delta: -102.4 MB). Peak memory consumption was 78.8 MB. Max. memory is 7.1 GB. [2020-07-20 11:47:37,364 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 144.7 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-20 11:47:37,365 INFO L168 Benchmark]: CACSL2BoogieTranslator took 374.98 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 101.6 MB in the beginning and 179.9 MB in the end (delta: -78.3 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. [2020-07-20 11:47:37,366 INFO L168 Benchmark]: Boogie Preprocessor took 44.88 ms. Allocated memory is still 201.9 MB. Free memory was 179.9 MB in the beginning and 177.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-07-20 11:47:37,367 INFO L168 Benchmark]: RCFGBuilder took 381.73 ms. Allocated memory is still 201.9 MB. Free memory was 177.9 MB in the beginning and 157.5 MB in the end (delta: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2020-07-20 11:47:37,368 INFO L168 Benchmark]: TraceAbstraction took 1626.65 ms. Allocated memory was 201.9 MB in the beginning and 233.8 MB in the end (delta: 32.0 MB). Free memory was 156.8 MB in the beginning and 204.4 MB in the end (delta: -47.6 MB). Peak memory consumption was 76.5 MB. Max. memory is 7.1 GB. [2020-07-20 11:47:37,372 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 144.7 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 374.98 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 101.6 MB in the beginning and 179.9 MB in the end (delta: -78.3 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 44.88 ms. Allocated memory is still 201.9 MB. Free memory was 179.9 MB in the beginning and 177.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 381.73 ms. Allocated memory is still 201.9 MB. Free memory was 177.9 MB in the beginning and 157.5 MB in the end (delta: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1626.65 ms. Allocated memory was 201.9 MB in the beginning and 233.8 MB in the end (delta: 32.0 MB). Free memory was 156.8 MB in the beginning and 204.4 MB in the end (delta: -47.6 MB). Peak memory consumption was 76.5 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); [L28] long long *b = malloc(sizeof(long long)*N); [L30] sum[0] = 0 [L31] i=0 VAL [\old(N)=0, a={-2:0}, b={-1:0}, i=0, malloc(sizeof(long long)*N)={-2:0}, malloc(sizeof(long long)*N)={-1:0}, N=1, sum={2:0}] [L31] COND TRUE i