/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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/loops/sum_array-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 18:43:15,828 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 18:43:15,832 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 18:43:15,884 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-23 18:43:15,913 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 18:43:15,916 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 18:43:15,918 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 18:43:15,920 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 18:43:15,921 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 18:43:15,924 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 18:43:15,930 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 18:43:15,938 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 18:43:15,939 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 18:43:15,941 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 18:43:15,942 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 18:43:15,944 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 18:43:15,952 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 18:43:15,962 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 18:43:15,963 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 18:43:15,964 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 18:43:15,965 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 [2020-10-23 18:43:16,026 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 18:43:16,026 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 18:43:16,030 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 18:43:16,031 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 18:43:16,031 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 18:43:16,031 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 18:43:16,031 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 18:43:16,032 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 18:43:16,032 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 18:43:16,032 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 18:43:16,033 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 18:43:16,034 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 18:43:16,034 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 18:43:16,034 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 18:43:16,034 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 18:43:16,034 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 18:43:16,035 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 18:43:16,035 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 18:43:16,035 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 18:43:16,035 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 18:43:16,036 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 18:43:16,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:43:16,036 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 18:43:16,036 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 18:43:16,036 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 18:43:16,037 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 18:43:16,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 18:43:16,037 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 18:43:16,037 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 18:43:16,037 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 18:43:16,446 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 18:43:16,473 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 18:43:16,476 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 18:43:16,477 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 18:43:16,478 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 18:43:16,479 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum_array-1.c [2020-10-23 18:43:16,565 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b6150a22/2c214a8dc07749eb8fb62967253462b9/FLAGba15e1e52 [2020-10-23 18:43:17,182 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 18:43:17,183 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum_array-1.c [2020-10-23 18:43:17,190 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b6150a22/2c214a8dc07749eb8fb62967253462b9/FLAGba15e1e52 [2020-10-23 18:43:17,576 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b6150a22/2c214a8dc07749eb8fb62967253462b9 [2020-10-23 18:43:17,579 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 18:43:17,585 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 18:43:17,587 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 18:43:17,587 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 18:43:17,591 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 18:43:17,592 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:43:17" (1/1) ... [2020-10-23 18:43:17,595 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9c1f6e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:17, skipping insertion in model container [2020-10-23 18:43:17,596 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:43:17" (1/1) ... [2020-10-23 18:43:17,604 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 18:43:17,619 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 18:43:17,787 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:43:17,796 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 18:43:17,848 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:43:17,870 INFO L208 MainTranslator]: Completed translation [2020-10-23 18:43:17,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:17 WrapperNode [2020-10-23 18:43:17,872 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 18:43:17,873 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 18:43:17,873 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 18:43:17,875 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 18:43:17,890 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:17" (1/1) ... [2020-10-23 18:43:17,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:17" (1/1) ... [2020-10-23 18:43:17,916 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:17" (1/1) ... [2020-10-23 18:43:17,917 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:17" (1/1) ... [2020-10-23 18:43:17,937 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:17" (1/1) ... [2020-10-23 18:43:17,947 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:17" (1/1) ... [2020-10-23 18:43:17,952 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:17" (1/1) ... [2020-10-23 18:43:17,960 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 18:43:17,963 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 18:43:17,964 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 18:43:17,964 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 18:43:17,965 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:17" (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 [2020-10-23 18:43:18,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 18:43:18,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 18:43:18,059 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 18:43:18,059 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 18:43:18,060 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 18:43:18,060 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 18:43:18,060 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 18:43:18,061 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 18:43:18,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 18:43:18,061 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 18:43:18,062 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 18:43:18,063 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-23 18:43:18,063 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 18:43:18,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 18:43:18,064 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 18:43:18,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 18:43:18,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 18:43:18,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 18:43:18,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 18:43:18,536 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 18:43:18,536 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-23 18:43:18,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:43:18 BoogieIcfgContainer [2020-10-23 18:43:18,538 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 18:43:18,540 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 18:43:18,540 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 18:43:18,543 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 18:43:18,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:43:17" (1/3) ... [2020-10-23 18:43:18,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25229f7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:43:18, skipping insertion in model container [2020-10-23 18:43:18,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:43:17" (2/3) ... [2020-10-23 18:43:18,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25229f7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:43:18, skipping insertion in model container [2020-10-23 18:43:18,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:43:18" (3/3) ... [2020-10-23 18:43:18,548 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_array-1.c [2020-10-23 18:43:18,560 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 18:43:18,565 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 18:43:18,580 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 18:43:18,608 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 18:43:18,608 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 18:43:18,608 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 18:43:18,609 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 18:43:18,609 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 18:43:18,609 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 18:43:18,609 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 18:43:18,609 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 18:43:18,628 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-10-23 18:43:18,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-23 18:43:18,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:43:18,636 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:43:18,637 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:43:18,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:43:18,643 INFO L82 PathProgramCache]: Analyzing trace with hash -888091919, now seen corresponding path program 1 times [2020-10-23 18:43:18,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:43:18,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417492470] [2020-10-23 18:43:18,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:43:18,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:19,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:43:19,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:43:19,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:43:19,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417492470] [2020-10-23 18:43:19,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:43:19,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 18:43:19,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303426052] [2020-10-23 18:43:19,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 18:43:19,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:43:19,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 18:43:19,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-23 18:43:19,108 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 5 states. [2020-10-23 18:43:19,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:43:19,323 INFO L93 Difference]: Finished difference Result 76 states and 108 transitions. [2020-10-23 18:43:19,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 18:43:19,325 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-23 18:43:19,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:43:19,345 INFO L225 Difference]: With dead ends: 76 [2020-10-23 18:43:19,345 INFO L226 Difference]: Without dead ends: 36 [2020-10-23 18:43:19,349 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-23 18:43:19,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-23 18:43:19,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 29. [2020-10-23 18:43:19,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-23 18:43:19,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-10-23 18:43:19,395 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 18 [2020-10-23 18:43:19,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:43:19,395 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-10-23 18:43:19,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 18:43:19,396 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-10-23 18:43:19,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-23 18:43:19,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:43:19,397 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] [2020-10-23 18:43:19,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 18:43:19,397 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:43:19,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:43:19,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1265245033, now seen corresponding path program 1 times [2020-10-23 18:43:19,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:43:19,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432000395] [2020-10-23 18:43:19,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:43:19,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 18:43:19,515 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 18:43:19,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 18:43:19,602 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 18:43:19,632 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-23 18:43:19,633 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 18:43:19,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 18:43:19,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:43:19 BoogieIcfgContainer [2020-10-23 18:43:19,673 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 18:43:19,676 INFO L168 Benchmark]: Toolchain (without parser) took 2093.55 ms. Allocated memory is still 152.0 MB. Free memory was 128.1 MB in the beginning and 116.7 MB in the end (delta: 11.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 8.0 GB. [2020-10-23 18:43:19,677 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 125.8 MB. Free memory was 102.0 MB in the beginning and 101.9 MB in the end (delta: 71.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 18:43:19,678 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.30 ms. Allocated memory is still 152.0 MB. Free memory was 127.5 MB in the beginning and 117.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-23 18:43:19,679 INFO L168 Benchmark]: Boogie Preprocessor took 87.29 ms. Allocated memory is still 152.0 MB. Free memory was 117.3 MB in the beginning and 115.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 18:43:19,681 INFO L168 Benchmark]: RCFGBuilder took 575.09 ms. Allocated memory is still 152.0 MB. Free memory was 115.5 MB in the beginning and 131.4 MB in the end (delta: -15.9 MB). Peak memory consumption was 16.5 MB. Max. memory is 8.0 GB. [2020-10-23 18:43:19,682 INFO L168 Benchmark]: TraceAbstraction took 1133.34 ms. Allocated memory is still 152.0 MB. Free memory was 131.0 MB in the beginning and 116.7 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-23 18:43:19,689 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 125.8 MB. Free memory was 102.0 MB in the beginning and 101.9 MB in the end (delta: 71.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 285.30 ms. Allocated memory is still 152.0 MB. Free memory was 127.5 MB in the beginning and 117.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 87.29 ms. Allocated memory is still 152.0 MB. Free memory was 117.3 MB in the beginning and 115.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 575.09 ms. Allocated memory is still 152.0 MB. Free memory was 115.5 MB in the beginning and 131.4 MB in the end (delta: -15.9 MB). Peak memory consumption was 16.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1133.34 ms. Allocated memory is still 152.0 MB. Free memory was 131.0 MB in the beginning and 116.7 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L16] unsigned int M = __VERIFIER_nondet_uint(); [L17] int A[M], B[M], C[M]; [L18] unsigned int i; [L20] i=0 VAL [A={19:0}, B={13:0}, C={18:0}, i=0, M=1] [L20] COND TRUE i