/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 --traceabstraction.trace.refinement.strategy CAMEL_NO_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/brs4f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-19 21:44:33,329 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 21:44:33,332 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 21:44:33,350 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 21:44:33,350 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 21:44:33,352 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 21:44:33,354 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 21:44:33,367 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 21:44:33,369 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 21:44:33,370 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 21:44:33,371 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 21:44:33,374 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 21:44:33,374 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 21:44:33,378 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 21:44:33,379 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 21:44:33,381 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 21:44:33,381 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 21:44:33,382 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 21:44:33,386 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 21:44:33,387 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 21:44:33,392 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 21:44:33,393 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 21:44:33,395 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 21:44:33,396 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 21:44:33,402 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-19 21:44:33,416 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 21:44:33,416 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 21:44:33,418 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 21:44:33,418 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 [2020-07-19 21:44:33,440 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 21:44:33,441 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 21:44:33,443 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 21:44:33,443 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 21:44:33,443 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 21:44:33,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 21:44:33,444 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 21:44:33,444 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 21:44:33,444 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 21:44:33,444 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 21:44:33,445 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 21:44:33,446 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 21:44:33,446 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 21:44:33,446 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 21:44:33,446 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 21:44:33,447 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 21:44:33,447 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 21:44:33,447 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 21:44:33,447 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 21:44:33,447 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 21:44:33,448 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 21:44:33,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 21:44:33,448 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 21:44:33,448 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 21:44:33,449 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 21:44:33,449 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 21:44:33,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 21:44:33,449 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 21:44:33,449 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 21:44:33,450 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_NO_AM [2020-07-19 21:44:33,752 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 21:44:33,775 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 21:44:33,781 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 21:44:33,783 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 21:44:33,784 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 21:44:33,784 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs4f.c [2020-07-19 21:44:33,868 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b0ac3ef9/9b834bc71c7148c888c78c48ad62ee40/FLAG760a04827 [2020-07-19 21:44:34,330 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 21:44:34,331 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/brs4f.c [2020-07-19 21:44:34,337 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b0ac3ef9/9b834bc71c7148c888c78c48ad62ee40/FLAG760a04827 [2020-07-19 21:44:34,758 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b0ac3ef9/9b834bc71c7148c888c78c48ad62ee40 [2020-07-19 21:44:34,766 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 21:44:34,769 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 21:44:34,770 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 21:44:34,770 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 21:44:34,774 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 21:44:34,775 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:44:34" (1/1) ... [2020-07-19 21:44:34,777 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5aca5a5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:44:34, skipping insertion in model container [2020-07-19 21:44:34,778 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:44:34" (1/1) ... [2020-07-19 21:44:34,785 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 21:44:34,807 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 21:44:35,097 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 21:44:35,107 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 21:44:35,147 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 21:44:35,169 INFO L208 MainTranslator]: Completed translation [2020-07-19 21:44:35,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:44:35 WrapperNode [2020-07-19 21:44:35,171 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 21:44:35,172 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 21:44:35,172 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 21:44:35,172 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 21:44:35,270 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:44:35" (1/1) ... [2020-07-19 21:44:35,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:44:35" (1/1) ... [2020-07-19 21:44:35,281 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:44:35" (1/1) ... [2020-07-19 21:44:35,281 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:44:35" (1/1) ... [2020-07-19 21:44:35,302 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:44:35" (1/1) ... [2020-07-19 21:44:35,310 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:44:35" (1/1) ... [2020-07-19 21:44:35,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:44:35" (1/1) ... [2020-07-19 21:44:35,314 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 21:44:35,314 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 21:44:35,315 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 21:44:35,315 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 21:44:35,316 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:44:35" (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 [2020-07-19 21:44:35,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 21:44:35,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 21:44:35,376 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-19 21:44:35,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-19 21:44:35,377 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 21:44:35,377 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 21:44:35,377 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-19 21:44:35,377 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-19 21:44:35,377 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-19 21:44:35,377 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-19 21:44:35,378 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-19 21:44:35,378 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 21:44:35,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-19 21:44:35,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-19 21:44:35,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-19 21:44:35,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-19 21:44:35,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-19 21:44:35,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 21:44:35,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 21:44:35,652 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 21:44:35,653 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-19 21:44:35,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:44:35 BoogieIcfgContainer [2020-07-19 21:44:35,659 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 21:44:35,660 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 21:44:35,660 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 21:44:35,664 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 21:44:35,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:44:34" (1/3) ... [2020-07-19 21:44:35,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@706a17ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:44:35, skipping insertion in model container [2020-07-19 21:44:35,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:44:35" (2/3) ... [2020-07-19 21:44:35,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@706a17ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:44:35, skipping insertion in model container [2020-07-19 21:44:35,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:44:35" (3/3) ... [2020-07-19 21:44:35,668 INFO L109 eAbstractionObserver]: Analyzing ICFG brs4f.c [2020-07-19 21:44:35,680 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 21:44:35,688 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-19 21:44:35,704 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-19 21:44:35,751 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 21:44:35,751 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 21:44:35,751 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 21:44:35,751 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 21:44:35,751 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 21:44:35,752 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 21:44:35,752 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 21:44:35,752 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 21:44:35,769 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-07-19 21:44:35,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-19 21:44:35,775 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:44:35,776 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:44:35,777 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:44:35,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:44:35,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1824292310, now seen corresponding path program 1 times [2020-07-19 21:44:35,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:44:35,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002974422] [2020-07-19 21:44:35,793 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@35b42a9d [2020-07-19 21:44:35,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:44:35,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:44:35,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:44:35,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:44:35,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002974422] [2020-07-19 21:44:35,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:44:35,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-19 21:44:35,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205026704] [2020-07-19 21:44:36,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-19 21:44:36,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:44:36,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-19 21:44:36,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-19 21:44:36,023 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2020-07-19 21:44:36,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:44:36,153 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2020-07-19 21:44:36,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-19 21:44:36,155 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-07-19 21:44:36,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:44:36,165 INFO L225 Difference]: With dead ends: 56 [2020-07-19 21:44:36,165 INFO L226 Difference]: Without dead ends: 26 [2020-07-19 21:44:36,169 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 [2020-07-19 21:44:36,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-07-19 21:44:36,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-07-19 21:44:36,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-07-19 21:44:36,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2020-07-19 21:44:36,207 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 21 [2020-07-19 21:44:36,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:44:36,207 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2020-07-19 21:44:36,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-19 21:44:36,208 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-07-19 21:44:36,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-19 21:44:36,209 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:44:36,209 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:44:36,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-19 21:44:36,210 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:44:36,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:44:36,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1767537087, now seen corresponding path program 1 times [2020-07-19 21:44:36,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:44:36,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751707898] [2020-07-19 21:44:36,211 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@35b42a9d [2020-07-19 21:44:36,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:44:36,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:44:36,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:44:36,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:44:36,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751707898] [2020-07-19 21:44:36,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:44:36,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-19 21:44:36,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172948685] [2020-07-19 21:44:36,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-19 21:44:36,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:44:36,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-19 21:44:36,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-19 21:44:36,380 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 5 states. [2020-07-19 21:44:36,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:44:36,514 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2020-07-19 21:44:36,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-19 21:44:36,515 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-07-19 21:44:36,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:44:36,516 INFO L225 Difference]: With dead ends: 45 [2020-07-19 21:44:36,516 INFO L226 Difference]: Without dead ends: 32 [2020-07-19 21:44:36,517 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 [2020-07-19 21:44:36,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-07-19 21:44:36,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-07-19 21:44:36,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-19 21:44:36,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-07-19 21:44:36,526 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 21 [2020-07-19 21:44:36,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:44:36,526 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-07-19 21:44:36,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-19 21:44:36,526 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-07-19 21:44:36,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-19 21:44:36,527 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:44:36,528 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] [2020-07-19 21:44:36,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-19 21:44:36,528 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:44:36,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:44:36,529 INFO L82 PathProgramCache]: Analyzing trace with hash -395878216, now seen corresponding path program 1 times [2020-07-19 21:44:36,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:44:36,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012594449] [2020-07-19 21:44:36,530 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@35b42a9d [2020-07-19 21:44:36,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 21:44:36,569 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 21:44:36,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 21:44:36,608 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 21:44:36,637 INFO L174 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2020-07-19 21:44:36,637 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-19 21:44:36,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-19 21:44:36,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 09:44:36 BoogieIcfgContainer [2020-07-19 21:44:36,675 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-19 21:44:36,678 INFO L168 Benchmark]: Toolchain (without parser) took 1908.75 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 103.0 MB in the beginning and 105.3 MB in the end (delta: -2.3 MB). Peak memory consumption was 61.2 MB. Max. memory is 7.1 GB. [2020-07-19 21:44:36,679 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 137.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-19 21:44:36,680 INFO L168 Benchmark]: CACSL2BoogieTranslator took 401.68 ms. Allocated memory is still 137.9 MB. Free memory was 102.6 MB in the beginning and 92.1 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-07-19 21:44:36,681 INFO L168 Benchmark]: Boogie Preprocessor took 141.98 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 92.1 MB in the beginning and 178.7 MB in the end (delta: -86.6 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2020-07-19 21:44:36,682 INFO L168 Benchmark]: RCFGBuilder took 344.56 ms. Allocated memory is still 201.3 MB. Free memory was 178.7 MB in the beginning and 161.6 MB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 7.1 GB. [2020-07-19 21:44:36,683 INFO L168 Benchmark]: TraceAbstraction took 1014.79 ms. Allocated memory is still 201.3 MB. Free memory was 161.6 MB in the beginning and 105.3 MB in the end (delta: 56.3 MB). Peak memory consumption was 56.3 MB. Max. memory is 7.1 GB. [2020-07-19 21:44:36,688 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 137.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 401.68 ms. Allocated memory is still 137.9 MB. Free memory was 102.6 MB in the beginning and 92.1 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 141.98 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 92.1 MB in the beginning and 178.7 MB in the end (delta: -86.6 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 344.56 ms. Allocated memory is still 201.3 MB. Free memory was 178.7 MB in the beginning and 161.6 MB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1014.79 ms. Allocated memory is still 201.3 MB. Free memory was 161.6 MB in the beginning and 105.3 MB in the end (delta: 56.3 MB). Peak memory consumption was 56.3 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)=42, N=0] [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L11] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={2:0}] [L29] COND TRUE i