/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/indp3f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 13:42:26,007 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 13:42:26,011 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 13:42:26,038 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 13:42:26,038 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 13:42:26,040 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 13:42:26,041 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 13:42:26,044 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 13:42:26,046 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 13:42:26,047 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 13:42:26,048 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 13:42:26,049 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 13:42:26,050 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 13:42:26,051 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 13:42:26,052 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 13:42:26,053 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 13:42:26,054 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 13:42:26,057 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 13:42:26,059 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 13:42:26,061 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 13:42:26,063 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 13:42:26,064 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 13:42:26,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 13:42:26,066 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 13:42:26,069 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 13:42:26,069 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 13:42:26,070 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 13:42:26,071 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 13:42:26,071 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 13:42:26,072 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 13:42:26,073 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 13:42:26,074 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 13:42:26,074 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 13:42:26,075 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 13:42:26,077 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 13:42:26,077 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 13:42:26,078 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 13:42:26,078 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 13:42:26,078 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 13:42:26,079 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 13:42:26,080 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 13:42:26,081 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 13:42:26,111 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 13:42:26,111 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 13:42:26,112 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 13:42:26,116 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 13:42:26,116 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 13:42:26,116 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 13:42:26,117 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 13:42:26,117 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 13:42:26,117 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 13:42:26,117 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 13:42:26,117 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 13:42:26,117 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 13:42:26,118 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 13:42:26,118 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 13:42:26,118 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 13:42:26,118 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 13:42:26,118 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 13:42:26,122 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 13:42:26,122 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 13:42:26,122 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 13:42:26,122 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 13:42:26,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:42:26,123 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 13:42:26,123 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 13:42:26,123 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 13:42:26,124 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 13:42:26,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 13:42:26,124 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 13:42:26,124 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 13:42:26,124 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 13:42:26,588 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 13:42:26,608 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 13:42:26,613 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 13:42:26,615 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 13:42:26,615 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 13:42:26,616 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/indp3f.c [2020-09-04 13:42:26,705 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3149ab121/00ef795ff500420b8706f4334f5c6e79/FLAG199f4cb64 [2020-09-04 13:42:27,225 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 13:42:27,226 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/indp3f.c [2020-09-04 13:42:27,235 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3149ab121/00ef795ff500420b8706f4334f5c6e79/FLAG199f4cb64 [2020-09-04 13:42:27,568 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3149ab121/00ef795ff500420b8706f4334f5c6e79 [2020-09-04 13:42:27,581 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 13:42:27,584 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 13:42:27,585 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 13:42:27,585 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 13:42:27,590 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 13:42:27,591 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:42:27" (1/1) ... [2020-09-04 13:42:27,596 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d064956 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:27, skipping insertion in model container [2020-09-04 13:42:27,596 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:42:27" (1/1) ... [2020-09-04 13:42:27,606 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 13:42:27,634 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 13:42:27,927 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:42:27,939 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 13:42:27,962 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:42:27,978 INFO L208 MainTranslator]: Completed translation [2020-09-04 13:42:27,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:27 WrapperNode [2020-09-04 13:42:27,979 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 13:42:27,979 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 13:42:27,980 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 13:42:27,980 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 13:42:28,078 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:27" (1/1) ... [2020-09-04 13:42:28,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:27" (1/1) ... [2020-09-04 13:42:28,089 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:27" (1/1) ... [2020-09-04 13:42:28,090 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:27" (1/1) ... [2020-09-04 13:42:28,099 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:27" (1/1) ... [2020-09-04 13:42:28,106 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:27" (1/1) ... [2020-09-04 13:42:28,108 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:27" (1/1) ... [2020-09-04 13:42:28,112 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 13:42:28,112 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 13:42:28,112 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 13:42:28,113 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 13:42:28,114 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:27" (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 13:42:28,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 13:42:28,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 13:42:28,200 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 13:42:28,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 13:42:28,200 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 13:42:28,200 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 13:42:28,200 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 13:42:28,201 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 13:42:28,201 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 13:42:28,201 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 13:42:28,201 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 13:42:28,202 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 13:42:28,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 13:42:28,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 13:42:28,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 13:42:28,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 13:42:28,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 13:42:28,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 13:42:28,530 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 13:42:28,531 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-04 13:42:28,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:42:28 BoogieIcfgContainer [2020-09-04 13:42:28,539 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 13:42:28,540 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 13:42:28,541 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 13:42:28,545 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 13:42:28,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 01:42:27" (1/3) ... [2020-09-04 13:42:28,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@172d60bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:42:28, skipping insertion in model container [2020-09-04 13:42:28,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:27" (2/3) ... [2020-09-04 13:42:28,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@172d60bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:42:28, skipping insertion in model container [2020-09-04 13:42:28,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:42:28" (3/3) ... [2020-09-04 13:42:28,549 INFO L109 eAbstractionObserver]: Analyzing ICFG indp3f.c [2020-09-04 13:42:28,564 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 13:42:28,577 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 13:42:28,604 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 13:42:28,642 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 13:42:28,642 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 13:42:28,643 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 13:42:28,643 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 13:42:28,643 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 13:42:28,643 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 13:42:28,643 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 13:42:28,643 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 13:42:28,696 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-09-04 13:42:28,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-04 13:42:28,707 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:28,708 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:42:28,709 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:28,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:28,715 INFO L82 PathProgramCache]: Analyzing trace with hash -173101897, now seen corresponding path program 1 times [2020-09-04 13:42:28,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:28,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463292224] [2020-09-04 13:42:28,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:28,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:28,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:42:28,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:28,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 13:42:28,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:28,955 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 13:42:28,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463292224] [2020-09-04 13:42:28,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:42:28,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 13:42:28,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156482664] [2020-09-04 13:42:28,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 13:42:28,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:42:28,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 13:42:28,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:42:28,988 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2020-09-04 13:42:29,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:42:29,138 INFO L93 Difference]: Finished difference Result 70 states and 93 transitions. [2020-09-04 13:42:29,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 13:42:29,141 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-09-04 13:42:29,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:42:29,153 INFO L225 Difference]: With dead ends: 70 [2020-09-04 13:42:29,153 INFO L226 Difference]: Without dead ends: 35 [2020-09-04 13:42:29,158 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 13:42:29,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-04 13:42:29,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-09-04 13:42:29,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-04 13:42:29,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-09-04 13:42:29,211 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 26 [2020-09-04 13:42:29,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:42:29,211 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-09-04 13:42:29,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 13:42:29,212 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-09-04 13:42:29,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-04 13:42:29,213 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:29,213 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:42:29,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 13:42:29,214 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:29,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:29,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1503462707, now seen corresponding path program 1 times [2020-09-04 13:42:29,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:29,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933611921] [2020-09-04 13:42:29,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:29,244 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-04 13:42:29,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [425440268] [2020-09-04 13:42:29,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 13:42:29,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:29,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2020-09-04 13:42:29,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:42:29,494 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 13:42:29,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933611921] [2020-09-04 13:42:29,498 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-09-04 13:42:29,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425440268] [2020-09-04 13:42:29,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:42:29,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 13:42:29,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522424048] [2020-09-04 13:42:29,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 13:42:29,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:42:29,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 13:42:29,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-04 13:42:29,506 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 4 states. [2020-09-04 13:42:29,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:42:29,615 INFO L93 Difference]: Finished difference Result 67 states and 79 transitions. [2020-09-04 13:42:29,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 13:42:29,616 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-09-04 13:42:29,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:42:29,619 INFO L225 Difference]: With dead ends: 67 [2020-09-04 13:42:29,620 INFO L226 Difference]: Without dead ends: 47 [2020-09-04 13:42:29,621 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-04 13:42:29,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-04 13:42:29,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 39. [2020-09-04 13:42:29,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-04 13:42:29,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-09-04 13:42:29,639 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 26 [2020-09-04 13:42:29,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:42:29,639 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-09-04 13:42:29,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 13:42:29,640 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-09-04 13:42:29,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-04 13:42:29,641 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:29,641 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] [2020-09-04 13:42:29,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-09-04 13:42:29,857 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:29,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:29,858 INFO L82 PathProgramCache]: Analyzing trace with hash -260192085, now seen corresponding path program 1 times [2020-09-04 13:42:29,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:29,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978939014] [2020-09-04 13:42:29,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:29,897 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-04 13:42:29,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [118180132] [2020-09-04 13:42:29,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:42:29,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 13:42:29,961 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 13:42:29,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 13:42:29,985 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 13:42:30,014 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-04 13:42:30,014 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 13:42:30,228 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:42:30,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 01:42:30 BoogieIcfgContainer [2020-09-04 13:42:30,320 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 13:42:30,329 INFO L168 Benchmark]: Toolchain (without parser) took 2738.79 ms. Allocated memory was 144.2 MB in the beginning and 199.8 MB in the end (delta: 55.6 MB). Free memory was 99.5 MB in the beginning and 86.8 MB in the end (delta: 12.7 MB). Peak memory consumption was 68.2 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:30,330 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 144.2 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 209.7 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 13:42:30,331 INFO L168 Benchmark]: CACSL2BoogieTranslator took 394.05 ms. Allocated memory is still 144.2 MB. Free memory was 99.3 MB in the beginning and 88.9 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:30,333 INFO L168 Benchmark]: Boogie Preprocessor took 132.47 ms. Allocated memory was 144.2 MB in the beginning and 199.8 MB in the end (delta: 55.6 MB). Free memory was 88.9 MB in the beginning and 176.9 MB in the end (delta: -88.0 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:30,336 INFO L168 Benchmark]: RCFGBuilder took 426.91 ms. Allocated memory is still 199.8 MB. Free memory was 176.9 MB in the beginning and 159.5 MB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:30,338 INFO L168 Benchmark]: TraceAbstraction took 1779.50 ms. Allocated memory is still 199.8 MB. Free memory was 158.8 MB in the beginning and 86.8 MB in the end (delta: 72.0 MB). Peak memory consumption was 72.0 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:30,346 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 144.2 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 209.7 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 394.05 ms. Allocated memory is still 144.2 MB. Free memory was 99.3 MB in the beginning and 88.9 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.47 ms. Allocated memory was 144.2 MB in the beginning and 199.8 MB in the end (delta: 55.6 MB). Free memory was 88.9 MB in the beginning and 176.9 MB in the end (delta: -88.0 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 426.91 ms. Allocated memory is still 199.8 MB. Free memory was 176.9 MB in the beginning and 159.5 MB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1779.50 ms. Allocated memory is still 199.8 MB. Free memory was 158.8 MB in the beginning and 86.8 MB in the end (delta: 72.0 MB). Peak memory consumption was 72.0 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)=3, 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 *a = malloc(sizeof(long long)*N); [L28] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(long long)*N)={-1:0}, N=1] [L28] COND TRUE i