/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/res1f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 16:56:36,815 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 16:56:36,818 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 16:56:36,857 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 16:56:36,857 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 16:56:36,861 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 16:56:36,862 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 16:56:36,864 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 16:56:36,865 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 16:56:36,866 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 16:56:36,867 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 16:56:36,868 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 16:56:36,868 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 16:56:36,869 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 16:56:36,870 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 16:56:36,871 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 16:56:36,872 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 16:56:36,873 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 16:56:36,875 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 16:56:36,877 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 16:56:36,878 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 16:56:36,879 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 16:56:36,880 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 16:56:36,881 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 16:56:36,884 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 16:56:36,891 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 16:56:36,892 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 16:56:36,893 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 16:56:36,894 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 16:56:36,915 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 16:56:36,915 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 16:56:36,917 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 16:56:36,917 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 16:56:36,917 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 16:56:36,917 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 16:56:36,918 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 16:56:36,918 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 16:56:36,918 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 16:56:36,918 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 16:56:36,918 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 16:56:36,919 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 16:56:36,919 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 16:56:36,919 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 16:56:36,919 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 16:56:36,919 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 16:56:36,920 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 16:56:36,920 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 16:56:36,920 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 16:56:36,920 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 16:56:36,920 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 16:56:36,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:56:36,921 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 16:56:36,921 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 16:56:36,921 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 16:56:36,921 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 16:56:36,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 16:56:36,922 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 16:56:36,922 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 16:56:36,922 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 16:56:37,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 16:56:37,227 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 16:56:37,231 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 16:56:37,232 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 16:56:37,232 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 16:56:37,233 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/res1f.c [2020-08-22 16:56:37,311 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8562894c4/a0b053f0348b44fb9aa5546220e02bed/FLAGf6c95d56a [2020-08-22 16:56:37,757 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 16:56:37,758 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/res1f.c [2020-08-22 16:56:37,766 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8562894c4/a0b053f0348b44fb9aa5546220e02bed/FLAGf6c95d56a [2020-08-22 16:56:38,145 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8562894c4/a0b053f0348b44fb9aa5546220e02bed [2020-08-22 16:56:38,155 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 16:56:38,157 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 16:56:38,159 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 16:56:38,159 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 16:56:38,163 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 16:56:38,164 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:56:38" (1/1) ... [2020-08-22 16:56:38,166 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fbfd6df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:38, skipping insertion in model container [2020-08-22 16:56:38,167 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:56:38" (1/1) ... [2020-08-22 16:56:38,174 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 16:56:38,191 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 16:56:38,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:56:38,383 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 16:56:38,404 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:56:38,419 INFO L208 MainTranslator]: Completed translation [2020-08-22 16:56:38,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:38 WrapperNode [2020-08-22 16:56:38,420 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 16:56:38,421 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 16:56:38,421 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 16:56:38,421 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 16:56:38,513 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:38" (1/1) ... [2020-08-22 16:56:38,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:38" (1/1) ... [2020-08-22 16:56:38,523 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:38" (1/1) ... [2020-08-22 16:56:38,524 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:38" (1/1) ... [2020-08-22 16:56:38,546 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:38" (1/1) ... [2020-08-22 16:56:38,557 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:38" (1/1) ... [2020-08-22 16:56:38,562 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:38" (1/1) ... [2020-08-22 16:56:38,565 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 16:56:38,565 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 16:56:38,566 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 16:56:38,566 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 16:56:38,566 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:38" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:56:38,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 16:56:38,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 16:56:38,624 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 16:56:38,624 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 16:56:38,625 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 16:56:38,625 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 16:56:38,625 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 16:56:38,625 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 16:56:38,625 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 16:56:38,625 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 16:56:38,626 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 16:56:38,626 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 16:56:38,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 16:56:38,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 16:56:38,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 16:56:38,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 16:56:38,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 16:56:38,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 16:56:38,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 16:56:38,955 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 16:56:38,955 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-22 16:56:38,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:56:38 BoogieIcfgContainer [2020-08-22 16:56:38,959 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 16:56:38,960 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 16:56:38,960 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 16:56:38,963 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 16:56:38,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:56:38" (1/3) ... [2020-08-22 16:56:38,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4be9f3d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:56:38, skipping insertion in model container [2020-08-22 16:56:38,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:56:38" (2/3) ... [2020-08-22 16:56:38,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4be9f3d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:56:38, skipping insertion in model container [2020-08-22 16:56:38,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:56:38" (3/3) ... [2020-08-22 16:56:38,967 INFO L109 eAbstractionObserver]: Analyzing ICFG res1f.c [2020-08-22 16:56:38,977 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 16:56:38,983 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 16:56:38,996 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 16:56:39,017 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 16:56:39,017 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 16:56:39,017 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 16:56:39,017 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 16:56:39,017 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 16:56:39,018 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 16:56:39,018 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 16:56:39,018 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 16:56:39,038 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-08-22 16:56:39,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-22 16:56:39,044 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:39,045 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] [2020-08-22 16:56:39,045 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:39,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:39,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1562148239, now seen corresponding path program 1 times [2020-08-22 16:56:39,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:39,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612804364] [2020-08-22 16:56:39,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:39,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:39,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:56:39,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:39,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 16:56:39,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:39,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:56:39,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612804364] [2020-08-22 16:56:39,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:56:39,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 16:56:39,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690707090] [2020-08-22 16:56:39,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 16:56:39,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:56:39,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 16:56:39,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 16:56:39,293 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-08-22 16:56:39,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:56:39,422 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2020-08-22 16:56:39,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 16:56:39,424 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-08-22 16:56:39,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:56:39,433 INFO L225 Difference]: With dead ends: 64 [2020-08-22 16:56:39,434 INFO L226 Difference]: Without dead ends: 30 [2020-08-22 16:56:39,439 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 [2020-08-22 16:56:39,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-08-22 16:56:39,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-08-22 16:56:39,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-22 16:56:39,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-08-22 16:56:39,475 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 25 [2020-08-22 16:56:39,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:56:39,476 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-08-22 16:56:39,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 16:56:39,476 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-08-22 16:56:39,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-22 16:56:39,477 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:39,478 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] [2020-08-22 16:56:39,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 16:56:39,478 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:39,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:39,479 INFO L82 PathProgramCache]: Analyzing trace with hash 369304979, now seen corresponding path program 1 times [2020-08-22 16:56:39,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:39,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781963361] [2020-08-22 16:56:39,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:39,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:39,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:56:39,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:39,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 16:56:39,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:56:39,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:56:39,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781963361] [2020-08-22 16:56:39,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:56:39,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 16:56:39,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767717768] [2020-08-22 16:56:39,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 16:56:39,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:56:39,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 16:56:39,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:56:39,617 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 5 states. [2020-08-22 16:56:39,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:56:39,785 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2020-08-22 16:56:39,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 16:56:39,786 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-08-22 16:56:39,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:56:39,788 INFO L225 Difference]: With dead ends: 53 [2020-08-22 16:56:39,788 INFO L226 Difference]: Without dead ends: 38 [2020-08-22 16:56:39,789 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 [2020-08-22 16:56:39,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-08-22 16:56:39,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2020-08-22 16:56:39,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-08-22 16:56:39,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2020-08-22 16:56:39,800 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 25 [2020-08-22 16:56:39,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:56:39,801 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2020-08-22 16:56:39,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 16:56:39,801 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2020-08-22 16:56:39,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-22 16:56:39,802 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:56:39,802 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] [2020-08-22 16:56:39,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 16:56:39,803 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:56:39,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:56:39,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1815337701, now seen corresponding path program 1 times [2020-08-22 16:56:39,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:56:39,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018937099] [2020-08-22 16:56:39,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:56:39,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:56:39,870 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:56:39,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:56:39,946 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:56:40,001 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-08-22 16:56:40,001 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 16:56:40,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 16:56:40,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:56:40 BoogieIcfgContainer [2020-08-22 16:56:40,046 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 16:56:40,049 INFO L168 Benchmark]: Toolchain (without parser) took 1891.48 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 101.6 MB in the beginning and 97.2 MB in the end (delta: 4.4 MB). Peak memory consumption was 67.3 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:40,050 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 16:56:40,051 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.06 ms. Allocated memory is still 138.4 MB. Free memory was 101.4 MB in the beginning and 90.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:40,053 INFO L168 Benchmark]: Boogie Preprocessor took 144.49 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 90.7 MB in the beginning and 178.6 MB in the end (delta: -87.9 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:40,054 INFO L168 Benchmark]: RCFGBuilder took 393.19 ms. Allocated memory is still 201.3 MB. Free memory was 178.6 MB in the beginning and 159.6 MB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:40,054 INFO L168 Benchmark]: TraceAbstraction took 1086.85 ms. Allocated memory is still 201.3 MB. Free memory was 159.6 MB in the beginning and 97.2 MB in the end (delta: 62.4 MB). Peak memory consumption was 62.4 MB. Max. memory is 7.1 GB. [2020-08-22 16:56:40,059 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 261.06 ms. Allocated memory is still 138.4 MB. Free memory was 101.4 MB in the beginning and 90.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 144.49 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 90.7 MB in the beginning and 178.6 MB in the end (delta: -87.9 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 393.19 ms. Allocated memory is still 201.3 MB. Free memory was 178.6 MB in the beginning and 159.6 MB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1086.85 ms. Allocated memory is still 201.3 MB. Free memory was 159.6 MB in the beginning and 97.2 MB in the end (delta: 62.4 MB). Peak memory consumption was 62.4 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); [L28] int *b = malloc(sizeof(int)*N); [L30] sum[0] = 1 [L31] i=0 VAL [\old(N)=0, a={-1:0}, b={5:0}, i=0, malloc(sizeof(int)*N)={-1:0}, malloc(sizeof(int)*N)={5:0}, N=1, sum={7:0}] [L31] COND TRUE i