/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/sina5f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 13:42:52,742 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 13:42:52,747 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 13:42:52,787 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 13:42:52,787 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 13:42:52,795 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 13:42:52,799 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 13:42:52,803 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 13:42:52,806 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 13:42:52,809 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 13:42:52,810 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 13:42:52,811 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 13:42:52,811 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 13:42:52,814 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 13:42:52,816 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 13:42:52,818 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 13:42:52,820 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 13:42:52,821 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 13:42:52,823 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 13:42:52,831 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 13:42:52,833 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 13:42:52,834 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 13:42:52,835 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 13:42:52,836 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 13:42:52,848 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 13:42:52,854 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 13:42:52,854 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 13:42:52,855 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 13:42:52,858 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 13:42:52,859 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 13:42:52,859 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 13:42:52,860 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 13:42:52,861 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 13:42:52,862 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 13:42:52,863 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 13:42:52,863 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 13:42:52,864 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 13:42:52,864 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 13:42:52,864 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 13:42:52,865 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 13:42:52,866 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 13:42:52,867 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-04 13:42:52,892 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 13:42:52,892 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 13:42:52,893 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 13:42:52,894 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 13:42:52,894 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 13:42:52,894 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 13:42:52,894 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 13:42:52,894 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 13:42:52,895 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 13:42:52,895 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 13:42:52,895 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 13:42:52,895 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 13:42:52,895 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 13:42:52,896 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 13:42:52,896 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 13:42:52,896 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 13:42:52,896 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 13:42:52,896 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 13:42:52,897 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 13:42:52,897 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 13:42:52,897 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 13:42:52,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:42:52,897 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 13:42:52,898 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 13:42:52,898 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 13:42:52,898 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 13:42:52,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 13:42:52,899 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 13:42:52,899 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 13:42:52,899 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 13:42:53,394 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 13:42:53,413 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 13:42:53,418 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 13:42:53,420 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 13:42:53,420 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 13:42:53,421 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sina5f.c [2020-09-04 13:42:53,504 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c7beefcd8/8a2be657c64341d098ead215742209ea/FLAG3d11dfb3f [2020-09-04 13:42:54,073 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 13:42:54,074 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/sina5f.c [2020-09-04 13:42:54,084 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c7beefcd8/8a2be657c64341d098ead215742209ea/FLAG3d11dfb3f [2020-09-04 13:42:54,418 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c7beefcd8/8a2be657c64341d098ead215742209ea [2020-09-04 13:42:54,432 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 13:42:54,434 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 13:42:54,435 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 13:42:54,435 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 13:42:54,440 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 13:42:54,441 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:42:54" (1/1) ... [2020-09-04 13:42:54,446 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d05d55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:54, skipping insertion in model container [2020-09-04 13:42:54,446 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:42:54" (1/1) ... [2020-09-04 13:42:54,456 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 13:42:54,484 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 13:42:54,763 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:42:54,775 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 13:42:54,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:42:54,912 INFO L208 MainTranslator]: Completed translation [2020-09-04 13:42:54,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:54 WrapperNode [2020-09-04 13:42:54,913 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 13:42:54,913 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 13:42:54,914 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 13:42:54,914 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 13:42:54,933 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:54" (1/1) ... [2020-09-04 13:42:54,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:54" (1/1) ... [2020-09-04 13:42:54,945 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:54" (1/1) ... [2020-09-04 13:42:54,946 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:54" (1/1) ... [2020-09-04 13:42:54,957 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:54" (1/1) ... [2020-09-04 13:42:54,965 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:54" (1/1) ... [2020-09-04 13:42:54,967 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:54" (1/1) ... [2020-09-04 13:42:54,970 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 13:42:54,971 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 13:42:54,971 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 13:42:54,971 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 13:42:54,973 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:54" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:42:55,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 13:42:55,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 13:42:55,058 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 13:42:55,058 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 13:42:55,058 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 13:42:55,058 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 13:42:55,059 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 13:42:55,059 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 13:42:55,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 13:42:55,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 13:42:55,059 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 13:42:55,060 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 13:42:55,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 13:42:55,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 13:42:55,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 13:42:55,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 13:42:55,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 13:42:55,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 13:42:55,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 13:42:55,434 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 13:42:55,435 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-04 13:42:55,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:42:55 BoogieIcfgContainer [2020-09-04 13:42:55,440 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 13:42:55,441 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 13:42:55,441 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 13:42:55,445 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 13:42:55,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 01:42:54" (1/3) ... [2020-09-04 13:42:55,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7616cbc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:42:55, skipping insertion in model container [2020-09-04 13:42:55,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:54" (2/3) ... [2020-09-04 13:42:55,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7616cbc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:42:55, skipping insertion in model container [2020-09-04 13:42:55,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:42:55" (3/3) ... [2020-09-04 13:42:55,449 INFO L109 eAbstractionObserver]: Analyzing ICFG sina5f.c [2020-09-04 13:42:55,461 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 13:42:55,471 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 13:42:55,493 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 13:42:55,520 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 13:42:55,520 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 13:42:55,520 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 13:42:55,521 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 13:42:55,521 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 13:42:55,521 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 13:42:55,521 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 13:42:55,521 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 13:42:55,542 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-09-04 13:42:55,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-04 13:42:55,550 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:55,551 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] [2020-09-04 13:42:55,551 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:55,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:55,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1994596369, now seen corresponding path program 1 times [2020-09-04 13:42:55,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:55,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429515550] [2020-09-04 13:42:55,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:55,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:55,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:42:55,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:55,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 13:42:55,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:55,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:42:55,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429515550] [2020-09-04 13:42:55,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:42:55,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 13:42:55,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287655038] [2020-09-04 13:42:55,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 13:42:55,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:42:55,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 13:42:55,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:42:55,847 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 3 states. [2020-09-04 13:42:56,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:42:56,069 INFO L93 Difference]: Finished difference Result 76 states and 103 transitions. [2020-09-04 13:42:56,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 13:42:56,072 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-09-04 13:42:56,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:42:56,092 INFO L225 Difference]: With dead ends: 76 [2020-09-04 13:42:56,092 INFO L226 Difference]: Without dead ends: 38 [2020-09-04 13:42:56,100 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 [2020-09-04 13:42:56,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-04 13:42:56,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-04 13:42:56,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-04 13:42:56,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-09-04 13:42:56,165 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 28 [2020-09-04 13:42:56,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:42:56,165 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-09-04 13:42:56,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 13:42:56,166 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-09-04 13:42:56,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-04 13:42:56,168 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:56,169 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] [2020-09-04 13:42:56,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 13:42:56,169 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:56,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:56,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1530390023, now seen corresponding path program 1 times [2020-09-04 13:42:56,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:56,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345170158] [2020-09-04 13:42:56,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:56,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:56,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:42:56,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:56,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 13:42:56,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:56,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:42:56,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345170158] [2020-09-04 13:42:56,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:42:56,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 13:42:56,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735774789] [2020-09-04 13:42:56,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 13:42:56,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:42:56,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 13:42:56,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 13:42:56,320 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 5 states. [2020-09-04 13:42:56,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:42:56,579 INFO L93 Difference]: Finished difference Result 75 states and 90 transitions. [2020-09-04 13:42:56,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 13:42:56,581 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-09-04 13:42:56,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:42:56,584 INFO L225 Difference]: With dead ends: 75 [2020-09-04 13:42:56,585 INFO L226 Difference]: Without dead ends: 52 [2020-09-04 13:42:56,586 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 [2020-09-04 13:42:56,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-04 13:42:56,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 43. [2020-09-04 13:42:56,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-04 13:42:56,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2020-09-04 13:42:56,604 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 28 [2020-09-04 13:42:56,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:42:56,604 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2020-09-04 13:42:56,605 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 13:42:56,605 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2020-09-04 13:42:56,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-04 13:42:56,606 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:56,607 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] [2020-09-04 13:42:56,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 13:42:56,607 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:56,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:56,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1357692925, now seen corresponding path program 1 times [2020-09-04 13:42:56,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:56,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419874985] [2020-09-04 13:42:56,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:56,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 13:42:56,680 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 13:42:56,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 13:42:56,779 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 13:42:56,838 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-04 13:42:56,839 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 13:42:56,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 13:42:56,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 01:42:56 BoogieIcfgContainer [2020-09-04 13:42:56,906 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 13:42:56,910 INFO L168 Benchmark]: Toolchain (without parser) took 2475.06 ms. Allocated memory was 145.2 MB in the beginning and 231.7 MB in the end (delta: 86.5 MB). Free memory was 101.4 MB in the beginning and 201.6 MB in the end (delta: -100.3 MB). Peak memory consumption was 80.2 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:56,911 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 145.2 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-04 13:42:56,913 INFO L168 Benchmark]: CACSL2BoogieTranslator took 478.14 ms. Allocated memory was 145.2 MB in the beginning and 201.3 MB in the end (delta: 56.1 MB). Free memory was 100.7 MB in the beginning and 180.2 MB in the end (delta: -79.5 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:56,913 INFO L168 Benchmark]: Boogie Preprocessor took 56.74 ms. Allocated memory is still 201.3 MB. Free memory was 180.2 MB in the beginning and 177.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:56,914 INFO L168 Benchmark]: RCFGBuilder took 469.64 ms. Allocated memory is still 201.3 MB. Free memory was 177.8 MB in the beginning and 157.8 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:56,916 INFO L168 Benchmark]: TraceAbstraction took 1465.33 ms. Allocated memory was 201.3 MB in the beginning and 231.7 MB in the end (delta: 30.4 MB). Free memory was 157.1 MB in the beginning and 201.6 MB in the end (delta: -44.5 MB). Peak memory consumption was 79.9 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:56,921 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 145.2 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 478.14 ms. Allocated memory was 145.2 MB in the beginning and 201.3 MB in the end (delta: 56.1 MB). Free memory was 100.7 MB in the beginning and 180.2 MB in the end (delta: -79.5 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 56.74 ms. Allocated memory is still 201.3 MB. Free memory was 180.2 MB in the beginning and 177.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 469.64 ms. Allocated memory is still 201.3 MB. Free memory was 177.8 MB in the beginning and 157.8 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1465.33 ms. Allocated memory was 201.3 MB in the beginning and 231.7 MB in the end (delta: 30.4 MB). Free memory was 157.1 MB in the beginning and 201.6 MB in the end (delta: -44.5 MB). Peak memory consumption was 79.9 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)=10, 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={-1:0}, b={4:0}, i=0, malloc(sizeof(long long)*N)={4:0}, malloc(sizeof(long long)*N)={-1:0}, N=1, sum={6:0}] [L31] COND TRUE i