/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/s5iff.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 13:42:47,975 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 13:42:47,980 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 13:42:48,007 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 13:42:48,007 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 13:42:48,009 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 13:42:48,010 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 13:42:48,013 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 13:42:48,016 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 13:42:48,021 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 13:42:48,022 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 13:42:48,024 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 13:42:48,024 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 13:42:48,025 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 13:42:48,027 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 13:42:48,028 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 13:42:48,029 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 13:42:48,030 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 13:42:48,032 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 13:42:48,034 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 13:42:48,035 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 13:42:48,037 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 13:42:48,038 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 13:42:48,039 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 13:42:48,042 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 13:42:48,045 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 13:42:48,046 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 13:42:48,047 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 13:42:48,048 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 13:42:48,049 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 13:42:48,050 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 13:42:48,050 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 13:42:48,051 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 13:42:48,051 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 13:42:48,052 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 13:42:48,053 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 13:42:48,054 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 13:42:48,086 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 13:42:48,087 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 13:42:48,089 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 13:42:48,089 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 13:42:48,090 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 13:42:48,090 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 13:42:48,090 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 13:42:48,090 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 13:42:48,091 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 13:42:48,091 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 13:42:48,092 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 13:42:48,092 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 13:42:48,092 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 13:42:48,093 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 13:42:48,094 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 13:42:48,094 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 13:42:48,094 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 13:42:48,094 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 13:42:48,095 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 13:42:48,095 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 13:42:48,095 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 13:42:48,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:42:48,096 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 13:42:48,096 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 13:42:48,096 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 13:42:48,096 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 13:42:48,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 13:42:48,097 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 13:42:48,097 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 13:42:48,097 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 13:42:48,608 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 13:42:48,634 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 13:42:48,641 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 13:42:48,643 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 13:42:48,643 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 13:42:48,645 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s5iff.c [2020-09-04 13:42:48,742 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f3f901e17/9f38b2ed33314b4d9276e995f3b5a06f/FLAG249179a35 [2020-09-04 13:42:49,318 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 13:42:49,318 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s5iff.c [2020-09-04 13:42:49,327 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f3f901e17/9f38b2ed33314b4d9276e995f3b5a06f/FLAG249179a35 [2020-09-04 13:42:49,677 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f3f901e17/9f38b2ed33314b4d9276e995f3b5a06f [2020-09-04 13:42:49,694 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 13:42:49,697 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 13:42:49,699 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 13:42:49,699 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 13:42:49,703 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 13:42:49,705 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:42:49" (1/1) ... [2020-09-04 13:42:49,710 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7673bb3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:49, skipping insertion in model container [2020-09-04 13:42:49,710 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:42:49" (1/1) ... [2020-09-04 13:42:49,720 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 13:42:49,750 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 13:42:49,994 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:42:50,005 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 13:42:50,028 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:42:50,047 INFO L208 MainTranslator]: Completed translation [2020-09-04 13:42:50,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:50 WrapperNode [2020-09-04 13:42:50,048 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 13:42:50,049 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 13:42:50,049 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 13:42:50,049 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 13:42:50,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:50" (1/1) ... [2020-09-04 13:42:50,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:50" (1/1) ... [2020-09-04 13:42:50,156 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:50" (1/1) ... [2020-09-04 13:42:50,156 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:50" (1/1) ... [2020-09-04 13:42:50,165 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:50" (1/1) ... [2020-09-04 13:42:50,172 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:50" (1/1) ... [2020-09-04 13:42:50,174 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:50" (1/1) ... [2020-09-04 13:42:50,176 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 13:42:50,177 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 13:42:50,177 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 13:42:50,177 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 13:42:50,179 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:50" (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 13:42:50,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 13:42:50,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 13:42:50,261 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 13:42:50,261 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 13:42:50,261 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 13:42:50,261 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 13:42:50,262 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 13:42:50,262 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 13:42:50,262 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 13:42:50,262 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 13:42:50,262 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 13:42:50,263 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 13:42:50,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 13:42:50,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 13:42:50,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 13:42:50,263 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 13:42:50,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 13:42:50,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 13:42:50,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 13:42:50,617 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 13:42:50,617 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-04 13:42:50,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:42:50 BoogieIcfgContainer [2020-09-04 13:42:50,622 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 13:42:50,624 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 13:42:50,624 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 13:42:50,628 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 13:42:50,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 01:42:49" (1/3) ... [2020-09-04 13:42:50,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50976067 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:42:50, skipping insertion in model container [2020-09-04 13:42:50,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:50" (2/3) ... [2020-09-04 13:42:50,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50976067 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:42:50, skipping insertion in model container [2020-09-04 13:42:50,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:42:50" (3/3) ... [2020-09-04 13:42:50,633 INFO L109 eAbstractionObserver]: Analyzing ICFG s5iff.c [2020-09-04 13:42:50,646 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 13:42:50,657 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 13:42:50,680 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 13:42:50,706 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 13:42:50,706 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 13:42:50,707 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 13:42:50,707 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 13:42:50,707 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 13:42:50,707 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 13:42:50,707 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 13:42:50,707 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 13:42:50,730 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-09-04 13:42:50,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-04 13:42:50,737 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:50,738 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] [2020-09-04 13:42:50,739 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:50,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:50,747 INFO L82 PathProgramCache]: Analyzing trace with hash -432131487, now seen corresponding path program 1 times [2020-09-04 13:42:50,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:50,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141068147] [2020-09-04 13:42:50,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:50,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:50,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:42:50,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:51,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 13:42:51,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:51,017 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 13:42:51,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141068147] [2020-09-04 13:42:51,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:42:51,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 13:42:51,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860977990] [2020-09-04 13:42:51,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 13:42:51,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:42:51,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 13:42:51,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:42:51,049 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-09-04 13:42:51,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:42:51,184 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2020-09-04 13:42:51,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 13:42:51,186 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-09-04 13:42:51,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:42:51,199 INFO L225 Difference]: With dead ends: 54 [2020-09-04 13:42:51,199 INFO L226 Difference]: Without dead ends: 25 [2020-09-04 13:42:51,205 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 13:42:51,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-09-04 13:42:51,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-09-04 13:42:51,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-09-04 13:42:51,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-09-04 13:42:51,256 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 21 [2020-09-04 13:42:51,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:42:51,257 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-09-04 13:42:51,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 13:42:51,257 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-09-04 13:42:51,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-04 13:42:51,258 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:51,258 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] [2020-09-04 13:42:51,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 13:42:51,259 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:51,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:51,260 INFO L82 PathProgramCache]: Analyzing trace with hash -173966049, now seen corresponding path program 1 times [2020-09-04 13:42:51,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:51,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209715719] [2020-09-04 13:42:51,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:51,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:51,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:42:51,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:51,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 13:42:51,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:51,393 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 13:42:51,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209715719] [2020-09-04 13:42:51,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:42:51,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 13:42:51,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135093020] [2020-09-04 13:42:51,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 13:42:51,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:42:51,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 13:42:51,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 13:42:51,398 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 5 states. [2020-09-04 13:42:51,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:42:51,527 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2020-09-04 13:42:51,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 13:42:51,528 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-04 13:42:51,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:42:51,529 INFO L225 Difference]: With dead ends: 40 [2020-09-04 13:42:51,530 INFO L226 Difference]: Without dead ends: 30 [2020-09-04 13:42:51,531 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 13:42:51,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-04 13:42:51,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2020-09-04 13:42:51,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-09-04 13:42:51,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2020-09-04 13:42:51,540 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 21 [2020-09-04 13:42:51,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:42:51,540 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2020-09-04 13:42:51,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 13:42:51,541 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2020-09-04 13:42:51,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-04 13:42:51,542 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:51,542 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 13:42:51,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 13:42:51,543 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:51,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:51,543 INFO L82 PathProgramCache]: Analyzing trace with hash -445719797, now seen corresponding path program 1 times [2020-09-04 13:42:51,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:51,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827295970] [2020-09-04 13:42:51,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:51,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 13:42:51,587 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 13:42:51,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 13:42:51,631 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 13:42:51,686 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-04 13:42:51,687 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 13:42:51,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 13:42:51,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 01:42:51 BoogieIcfgContainer [2020-09-04 13:42:51,761 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 13:42:51,765 INFO L168 Benchmark]: Toolchain (without parser) took 2067.55 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 103.3 MB in the beginning and 106.8 MB in the end (delta: -3.4 MB). Peak memory consumption was 58.4 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:51,766 INFO L168 Benchmark]: CDTParser took 0.55 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 13:42:51,767 INFO L168 Benchmark]: CACSL2BoogieTranslator took 349.72 ms. Allocated memory is still 140.0 MB. Free memory was 103.1 MB in the beginning and 92.8 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:51,768 INFO L168 Benchmark]: Boogie Preprocessor took 127.44 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 92.6 MB in the beginning and 179.2 MB in the end (delta: -86.6 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:51,769 INFO L168 Benchmark]: RCFGBuilder took 445.27 ms. Allocated memory is still 201.9 MB. Free memory was 179.2 MB in the beginning and 162.6 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:51,770 INFO L168 Benchmark]: TraceAbstraction took 1138.11 ms. Allocated memory is still 201.9 MB. Free memory was 162.0 MB in the beginning and 106.8 MB in the end (delta: 55.2 MB). Peak memory consumption was 55.2 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:51,774 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 349.72 ms. Allocated memory is still 140.0 MB. Free memory was 103.1 MB in the beginning and 92.8 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.44 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 92.6 MB in the beginning and 179.2 MB in the end (delta: -86.6 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 445.27 ms. Allocated memory is still 201.9 MB. Free memory was 179.2 MB in the beginning and 162.6 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1138.11 ms. Allocated memory is still 201.9 MB. Free memory was 162.0 MB in the beginning and 106.8 MB in the end (delta: 55.2 MB). Peak memory consumption was 55.2 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] int *a = malloc(sizeof(int)*N); [L29] sum[0] = 1 [L30] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={2:0}] [L30] COND TRUE i