/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/brs5f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 13:42:12,500 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 13:42:12,504 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 13:42:12,549 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 13:42:12,549 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 13:42:12,557 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 13:42:12,560 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 13:42:12,565 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 13:42:12,567 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 13:42:12,570 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 13:42:12,572 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 13:42:12,573 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 13:42:12,573 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 13:42:12,576 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 13:42:12,578 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 13:42:12,580 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 13:42:12,582 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 13:42:12,583 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 13:42:12,584 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 13:42:12,593 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 13:42:12,596 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 13:42:12,597 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 13:42:12,598 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 13:42:12,599 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 13:42:12,616 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 13:42:12,616 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 13:42:12,616 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 13:42:12,618 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 13:42:12,618 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 13:42:12,621 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 13:42:12,621 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 13:42:12,622 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 13:42:12,623 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 13:42:12,623 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 13:42:12,630 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 13:42:12,630 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 13:42:12,631 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 13:42:12,631 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 13:42:12,631 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 13:42:12,633 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 13:42:12,634 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 13:42:12,635 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 13:42:12,680 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 13:42:12,681 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 13:42:12,682 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 13:42:12,683 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 13:42:12,683 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 13:42:12,683 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 13:42:12,683 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 13:42:12,684 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 13:42:12,684 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 13:42:12,684 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 13:42:12,685 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 13:42:12,685 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 13:42:12,686 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 13:42:12,686 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 13:42:12,686 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 13:42:12,687 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 13:42:12,687 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 13:42:12,687 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 13:42:12,687 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 13:42:12,687 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 13:42:12,688 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 13:42:12,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:42:12,688 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 13:42:12,688 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 13:42:12,689 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 13:42:12,689 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 13:42:12,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 13:42:12,689 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 13:42:12,689 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 13:42:12,690 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 13:42:13,129 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 13:42:13,153 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 13:42:13,158 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 13:42:13,159 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 13:42:13,160 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 13:42:13,161 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs5f.c [2020-09-04 13:42:13,241 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9502b88f6/1fad12d600964a3ca1165b08e15e9431/FLAG66fddad44 [2020-09-04 13:42:13,818 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 13:42:13,819 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/brs5f.c [2020-09-04 13:42:13,827 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9502b88f6/1fad12d600964a3ca1165b08e15e9431/FLAG66fddad44 [2020-09-04 13:42:14,129 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9502b88f6/1fad12d600964a3ca1165b08e15e9431 [2020-09-04 13:42:14,143 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 13:42:14,145 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 13:42:14,146 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 13:42:14,146 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 13:42:14,151 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 13:42:14,152 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:42:14" (1/1) ... [2020-09-04 13:42:14,157 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e164ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:14, skipping insertion in model container [2020-09-04 13:42:14,158 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:42:14" (1/1) ... [2020-09-04 13:42:14,168 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 13:42:14,191 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 13:42:14,413 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:42:14,423 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 13:42:14,446 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:42:14,464 INFO L208 MainTranslator]: Completed translation [2020-09-04 13:42:14,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:14 WrapperNode [2020-09-04 13:42:14,465 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 13:42:14,466 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 13:42:14,466 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 13:42:14,466 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 13:42:14,565 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:14" (1/1) ... [2020-09-04 13:42:14,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:14" (1/1) ... [2020-09-04 13:42:14,574 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:14" (1/1) ... [2020-09-04 13:42:14,575 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:14" (1/1) ... [2020-09-04 13:42:14,584 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:14" (1/1) ... [2020-09-04 13:42:14,591 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:14" (1/1) ... [2020-09-04 13:42:14,596 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:14" (1/1) ... [2020-09-04 13:42:14,601 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 13:42:14,602 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 13:42:14,602 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 13:42:14,602 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 13:42:14,603 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:14" (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 13:42:14,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 13:42:14,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 13:42:14,676 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 13:42:14,676 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 13:42:14,676 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 13:42:14,676 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 13:42:14,676 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 13:42:14,677 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 13:42:14,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 13:42:14,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 13:42:14,677 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 13:42:14,678 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 13:42:14,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 13:42:14,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 13:42:14,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 13:42:14,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 13:42:14,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 13:42:14,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 13:42:14,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 13:42:15,029 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 13:42:15,029 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-04 13:42:15,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:42:15 BoogieIcfgContainer [2020-09-04 13:42:15,035 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 13:42:15,036 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 13:42:15,036 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 13:42:15,040 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 13:42:15,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 01:42:14" (1/3) ... [2020-09-04 13:42:15,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c241e0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:42:15, skipping insertion in model container [2020-09-04 13:42:15,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:14" (2/3) ... [2020-09-04 13:42:15,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c241e0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:42:15, skipping insertion in model container [2020-09-04 13:42:15,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:42:15" (3/3) ... [2020-09-04 13:42:15,045 INFO L109 eAbstractionObserver]: Analyzing ICFG brs5f.c [2020-09-04 13:42:15,059 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 13:42:15,070 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 13:42:15,089 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 13:42:15,115 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 13:42:15,115 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 13:42:15,116 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 13:42:15,116 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 13:42:15,116 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 13:42:15,116 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 13:42:15,116 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 13:42:15,116 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 13:42:15,136 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-09-04 13:42:15,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-04 13:42:15,143 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:15,145 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:42:15,145 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:15,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:15,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1824292310, now seen corresponding path program 1 times [2020-09-04 13:42:15,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:15,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506483132] [2020-09-04 13:42:15,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:15,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:15,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:42:15,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:15,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 13:42:15,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:15,391 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 13:42:15,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506483132] [2020-09-04 13:42:15,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:42:15,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 13:42:15,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905521492] [2020-09-04 13:42:15,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 13:42:15,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:42:15,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 13:42:15,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:42:15,427 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2020-09-04 13:42:15,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:42:15,594 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2020-09-04 13:42:15,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 13:42:15,596 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-09-04 13:42:15,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:42:15,608 INFO L225 Difference]: With dead ends: 56 [2020-09-04 13:42:15,608 INFO L226 Difference]: Without dead ends: 26 [2020-09-04 13:42:15,613 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 13:42:15,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-09-04 13:42:15,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-09-04 13:42:15,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-09-04 13:42:15,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2020-09-04 13:42:15,659 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 21 [2020-09-04 13:42:15,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:42:15,659 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2020-09-04 13:42:15,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 13:42:15,660 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-09-04 13:42:15,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-04 13:42:15,661 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:15,661 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:42:15,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 13:42:15,662 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:15,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:15,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1767537087, now seen corresponding path program 1 times [2020-09-04 13:42:15,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:15,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006698055] [2020-09-04 13:42:15,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:15,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:15,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:42:15,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:15,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 13:42:15,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:15,813 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 13:42:15,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006698055] [2020-09-04 13:42:15,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:42:15,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 13:42:15,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933611921] [2020-09-04 13:42:15,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 13:42:15,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:42:15,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 13:42:15,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 13:42:15,825 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 5 states. [2020-09-04 13:42:16,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:42:16,004 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2020-09-04 13:42:16,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 13:42:16,005 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-04 13:42:16,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:42:16,007 INFO L225 Difference]: With dead ends: 45 [2020-09-04 13:42:16,007 INFO L226 Difference]: Without dead ends: 32 [2020-09-04 13:42:16,009 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-04 13:42:16,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-09-04 13:42:16,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-09-04 13:42:16,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-04 13:42:16,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-09-04 13:42:16,020 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 21 [2020-09-04 13:42:16,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:42:16,020 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-09-04 13:42:16,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 13:42:16,021 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-09-04 13:42:16,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-04 13:42:16,022 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:16,022 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] [2020-09-04 13:42:16,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 13:42:16,023 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:16,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:16,023 INFO L82 PathProgramCache]: Analyzing trace with hash -395878216, now seen corresponding path program 1 times [2020-09-04 13:42:16,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:16,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111847424] [2020-09-04 13:42:16,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:16,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 13:42:16,066 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 13:42:16,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 13:42:16,103 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 13:42:16,136 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-04 13:42:16,136 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 13:42:16,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 13:42:16,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 01:42:16 BoogieIcfgContainer [2020-09-04 13:42:16,182 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 13:42:16,185 INFO L168 Benchmark]: Toolchain (without parser) took 2039.12 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 101.8 MB in the beginning and 105.0 MB in the end (delta: -3.2 MB). Peak memory consumption was 59.7 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:16,186 INFO L168 Benchmark]: CDTParser took 0.56 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 13:42:16,187 INFO L168 Benchmark]: CACSL2BoogieTranslator took 319.64 ms. Allocated memory is still 138.9 MB. Free memory was 101.6 MB in the beginning and 91.0 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:16,188 INFO L168 Benchmark]: Boogie Preprocessor took 135.77 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 91.0 MB in the beginning and 179.2 MB in the end (delta: -88.1 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:16,189 INFO L168 Benchmark]: RCFGBuilder took 432.81 ms. Allocated memory is still 201.9 MB. Free memory was 179.2 MB in the beginning and 162.0 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:16,190 INFO L168 Benchmark]: TraceAbstraction took 1145.83 ms. Allocated memory is still 201.9 MB. Free memory was 161.3 MB in the beginning and 105.0 MB in the end (delta: 56.3 MB). Peak memory consumption was 56.3 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:16,194 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 319.64 ms. Allocated memory is still 138.9 MB. Free memory was 101.6 MB in the beginning and 91.0 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 135.77 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 91.0 MB in the beginning and 179.2 MB in the end (delta: -88.1 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 432.81 ms. Allocated memory is still 201.9 MB. Free memory was 179.2 MB in the beginning and 162.0 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1145.83 ms. Allocated memory is still 201.9 MB. Free memory was 161.3 MB in the beginning and 105.0 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)=10, N=0] [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L11] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] 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