/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/ncompf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 13:42:34,840 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 13:42:34,844 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 13:42:34,892 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 13:42:34,892 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 13:42:34,904 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 13:42:34,906 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 13:42:34,909 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 13:42:34,912 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 13:42:34,914 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 13:42:34,915 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 13:42:34,918 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 13:42:34,918 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 13:42:34,923 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 13:42:34,926 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 13:42:34,928 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 13:42:34,929 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 13:42:34,932 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 13:42:34,934 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 13:42:34,940 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 13:42:34,943 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 13:42:34,944 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 13:42:34,945 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 13:42:34,946 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 13:42:34,951 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 13:42:34,963 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 13:42:34,964 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 13:42:34,965 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 13:42:34,966 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 13:42:35,014 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 13:42:35,015 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 13:42:35,017 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 13:42:35,017 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 13:42:35,018 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 13:42:35,018 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 13:42:35,018 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 13:42:35,019 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 13:42:35,019 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 13:42:35,019 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 13:42:35,020 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 13:42:35,020 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 13:42:35,021 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 13:42:35,021 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 13:42:35,021 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 13:42:35,021 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 13:42:35,022 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 13:42:35,022 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 13:42:35,022 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 13:42:35,022 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 13:42:35,022 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 13:42:35,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:42:35,023 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 13:42:35,023 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 13:42:35,023 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 13:42:35,023 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 13:42:35,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 13:42:35,024 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 13:42:35,024 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 13:42:35,024 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 13:42:35,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 13:42:35,508 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 13:42:35,513 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 13:42:35,515 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 13:42:35,515 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 13:42:35,517 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ncompf.c [2020-09-04 13:42:35,617 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a0e8998f/4a6ce7c0b1b249c58fefa217404f21c5/FLAG112ba80e3 [2020-09-04 13:42:36,182 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 13:42:36,183 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ncompf.c [2020-09-04 13:42:36,192 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a0e8998f/4a6ce7c0b1b249c58fefa217404f21c5/FLAG112ba80e3 [2020-09-04 13:42:36,523 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a0e8998f/4a6ce7c0b1b249c58fefa217404f21c5 [2020-09-04 13:42:36,540 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 13:42:36,542 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 13:42:36,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 13:42:36,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 13:42:36,553 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 13:42:36,555 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:42:36" (1/1) ... [2020-09-04 13:42:36,560 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31d5df5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:36, skipping insertion in model container [2020-09-04 13:42:36,561 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:42:36" (1/1) ... [2020-09-04 13:42:36,571 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 13:42:36,604 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 13:42:36,845 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:42:36,859 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 13:42:36,886 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:42:36,905 INFO L208 MainTranslator]: Completed translation [2020-09-04 13:42:36,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:36 WrapperNode [2020-09-04 13:42:36,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 13:42:36,906 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 13:42:36,907 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 13:42:36,907 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 13:42:37,005 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:36" (1/1) ... [2020-09-04 13:42:37,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:36" (1/1) ... [2020-09-04 13:42:37,016 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:36" (1/1) ... [2020-09-04 13:42:37,017 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:36" (1/1) ... [2020-09-04 13:42:37,027 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:36" (1/1) ... [2020-09-04 13:42:37,034 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:36" (1/1) ... [2020-09-04 13:42:37,037 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:36" (1/1) ... [2020-09-04 13:42:37,042 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 13:42:37,043 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 13:42:37,043 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 13:42:37,043 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 13:42:37,045 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:36" (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 13:42:37,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 13:42:37,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 13:42:37,117 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 13:42:37,117 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 13:42:37,118 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 13:42:37,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 13:42:37,118 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 13:42:37,118 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 13:42:37,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 13:42:37,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 13:42:37,118 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 13:42:37,119 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 13:42:37,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 13:42:37,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 13:42:37,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 13:42:37,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 13:42:37,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 13:42:37,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 13:42:37,449 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 13:42:37,450 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-04 13:42:37,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:42:37 BoogieIcfgContainer [2020-09-04 13:42:37,456 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 13:42:37,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 13:42:37,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 13:42:37,462 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 13:42:37,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 01:42:36" (1/3) ... [2020-09-04 13:42:37,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73f9ba2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:42:37, skipping insertion in model container [2020-09-04 13:42:37,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:36" (2/3) ... [2020-09-04 13:42:37,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73f9ba2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:42:37, skipping insertion in model container [2020-09-04 13:42:37,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:42:37" (3/3) ... [2020-09-04 13:42:37,466 INFO L109 eAbstractionObserver]: Analyzing ICFG ncompf.c [2020-09-04 13:42:37,483 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 13:42:37,493 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 13:42:37,522 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 13:42:37,564 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 13:42:37,565 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 13:42:37,565 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 13:42:37,565 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 13:42:37,565 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 13:42:37,565 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 13:42:37,566 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 13:42:37,566 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 13:42:37,591 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-09-04 13:42:37,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-04 13:42:37,610 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:37,611 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] [2020-09-04 13:42:37,614 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:37,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:37,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1155719453, now seen corresponding path program 1 times [2020-09-04 13:42:37,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:37,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319751428] [2020-09-04 13:42:37,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:37,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:37,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:42:37,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:37,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 13:42:37,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:37,899 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 13:42:37,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319751428] [2020-09-04 13:42:37,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:42:37,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 13:42:37,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884396139] [2020-09-04 13:42:37,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 13:42:37,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:42:37,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 13:42:37,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:42:37,941 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-09-04 13:42:38,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:42:38,072 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2020-09-04 13:42:38,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 13:42:38,075 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-09-04 13:42:38,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:42:38,086 INFO L225 Difference]: With dead ends: 64 [2020-09-04 13:42:38,086 INFO L226 Difference]: Without dead ends: 32 [2020-09-04 13:42:38,091 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 13:42:38,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-09-04 13:42:38,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-09-04 13:42:38,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-04 13:42:38,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-09-04 13:42:38,140 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 24 [2020-09-04 13:42:38,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:42:38,141 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-09-04 13:42:38,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 13:42:38,141 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-09-04 13:42:38,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-04 13:42:38,142 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:38,143 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] [2020-09-04 13:42:38,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 13:42:38,144 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:38,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:38,145 INFO L82 PathProgramCache]: Analyzing trace with hash -124144225, now seen corresponding path program 1 times [2020-09-04 13:42:38,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:38,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250518623] [2020-09-04 13:42:38,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:38,178 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-04 13:42:38,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1656051817] [2020-09-04 13:42:38,179 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 13:42:38,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 13:42:38,288 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 13:42:38,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 13:42:38,314 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 13:42:38,352 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-04 13:42:38,352 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 13:42:38,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-09-04 13:42:38,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 01:42:38 BoogieIcfgContainer [2020-09-04 13:42:38,618 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 13:42:38,621 INFO L168 Benchmark]: Toolchain (without parser) took 2078.29 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 103.3 MB in the beginning and 117.9 MB in the end (delta: -14.6 MB). Peak memory consumption was 48.8 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:38,622 INFO L168 Benchmark]: CDTParser took 0.53 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 13:42:38,623 INFO L168 Benchmark]: CACSL2BoogieTranslator took 357.46 ms. Allocated memory is still 141.0 MB. Free memory was 103.0 MB in the beginning and 92.0 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:38,624 INFO L168 Benchmark]: Boogie Preprocessor took 135.97 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 92.0 MB in the beginning and 181.9 MB in the end (delta: -90.0 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:38,625 INFO L168 Benchmark]: RCFGBuilder took 413.46 ms. Allocated memory is still 204.5 MB. Free memory was 181.9 MB in the beginning and 164.0 MB in the end (delta: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:38,626 INFO L168 Benchmark]: TraceAbstraction took 1160.29 ms. Allocated memory is still 204.5 MB. Free memory was 163.4 MB in the beginning and 117.9 MB in the end (delta: 45.5 MB). Peak memory consumption was 45.5 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:38,630 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 357.46 ms. Allocated memory is still 141.0 MB. Free memory was 103.0 MB in the beginning and 92.0 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 135.97 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 92.0 MB in the beginning and 181.9 MB in the end (delta: -90.0 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 413.46 ms. Allocated memory is still 204.5 MB. Free memory was 181.9 MB in the beginning and 164.0 MB in the end (delta: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1160.29 ms. Allocated memory is still 204.5 MB. Free memory was 163.4 MB in the beginning and 117.9 MB in the end (delta: 45.5 MB). Peak memory consumption was 45.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; VAL [\old(N)=4, 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); [L27] long long *b = malloc(sizeof(long long)*N); [L28] long long *c = malloc(sizeof(long long)*N); [L30] a[0] = 6 [L31] b[0] = 1 [L32] c[0] = 0 [L33] i=1 VAL [\old(N)=0, a={-3:0}, b={-1:0}, c={-2:0}, i=1, malloc(sizeof(long long)*N)={-1:0}, malloc(sizeof(long long)*N)={-2:0}, malloc(sizeof(long long)*N)={-3:0}, N=1] [L33] COND FALSE !(i