/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/sina1f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-19 21:45:32,224 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 21:45:32,227 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 21:45:32,245 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 21:45:32,245 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 21:45:32,247 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 21:45:32,249 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 21:45:32,250 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 21:45:32,252 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 21:45:32,253 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 21:45:32,254 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 21:45:32,255 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 21:45:32,255 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 21:45:32,256 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 21:45:32,257 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 21:45:32,258 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 21:45:32,259 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 21:45:32,260 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 21:45:32,261 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 21:45:32,263 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 21:45:32,264 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 21:45:32,265 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 21:45:32,266 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 21:45:32,267 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 21:45:32,270 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-19 21:45:32,277 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 21:45:32,278 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 21:45:32,278 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 21:45:32,279 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 21:45:32,293 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 21:45:32,293 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 21:45:32,294 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 21:45:32,294 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 21:45:32,294 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 21:45:32,295 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 21:45:32,295 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 21:45:32,295 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 21:45:32,295 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 21:45:32,295 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 21:45:32,295 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 21:45:32,296 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 21:45:32,296 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 21:45:32,296 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 21:45:32,296 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 21:45:32,296 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 21:45:32,297 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 21:45:32,297 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 21:45:32,297 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 21:45:32,297 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 21:45:32,297 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 21:45:32,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 21:45:32,298 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 21:45:32,298 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 21:45:32,298 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 21:45:32,298 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 21:45:32,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 21:45:32,299 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 21:45:32,299 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 21:45:32,299 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 21:45:32,555 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 21:45:32,575 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 21:45:32,579 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 21:45:32,580 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 21:45:32,581 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 21:45:32,582 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sina1f.c [2020-07-19 21:45:32,649 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a328b0ea5/445402b025e84c319496dddc5a3d2fda/FLAG093fbe905 [2020-07-19 21:45:33,098 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 21:45:33,099 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/sina1f.c [2020-07-19 21:45:33,105 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a328b0ea5/445402b025e84c319496dddc5a3d2fda/FLAG093fbe905 [2020-07-19 21:45:33,474 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a328b0ea5/445402b025e84c319496dddc5a3d2fda [2020-07-19 21:45:33,485 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 21:45:33,488 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 21:45:33,489 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 21:45:33,489 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 21:45:33,492 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 21:45:33,493 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:45:33" (1/1) ... [2020-07-19 21:45:33,496 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38a584d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:33, skipping insertion in model container [2020-07-19 21:45:33,496 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:45:33" (1/1) ... [2020-07-19 21:45:33,504 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 21:45:33,529 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 21:45:33,777 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 21:45:33,785 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 21:45:33,803 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 21:45:33,819 INFO L208 MainTranslator]: Completed translation [2020-07-19 21:45:33,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:33 WrapperNode [2020-07-19 21:45:33,819 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 21:45:33,820 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 21:45:33,820 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 21:45:33,820 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 21:45:33,917 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:33" (1/1) ... [2020-07-19 21:45:33,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:33" (1/1) ... [2020-07-19 21:45:33,926 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:33" (1/1) ... [2020-07-19 21:45:33,926 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:33" (1/1) ... [2020-07-19 21:45:33,933 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:33" (1/1) ... [2020-07-19 21:45:33,938 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:33" (1/1) ... [2020-07-19 21:45:33,939 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:33" (1/1) ... [2020-07-19 21:45:33,941 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 21:45:33,942 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 21:45:33,942 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 21:45:33,942 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 21:45:33,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:33" (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 21:45:34,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 21:45:34,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 21:45:34,003 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-19 21:45:34,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-19 21:45:34,003 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 21:45:34,004 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 21:45:34,004 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-19 21:45:34,004 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-19 21:45:34,004 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-19 21:45:34,004 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-19 21:45:34,004 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-19 21:45:34,004 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 21:45:34,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-19 21:45:34,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-19 21:45:34,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-19 21:45:34,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-19 21:45:34,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-19 21:45:34,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 21:45:34,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 21:45:34,289 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 21:45:34,289 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-07-19 21:45:34,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:45:34 BoogieIcfgContainer [2020-07-19 21:45:34,293 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 21:45:34,294 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 21:45:34,295 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 21:45:34,298 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 21:45:34,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:45:33" (1/3) ... [2020-07-19 21:45:34,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dfd62af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:45:34, skipping insertion in model container [2020-07-19 21:45:34,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:45:33" (2/3) ... [2020-07-19 21:45:34,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dfd62af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:45:34, skipping insertion in model container [2020-07-19 21:45:34,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:45:34" (3/3) ... [2020-07-19 21:45:34,301 INFO L109 eAbstractionObserver]: Analyzing ICFG sina1f.c [2020-07-19 21:45:34,311 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 21:45:34,317 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-19 21:45:34,329 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-19 21:45:34,350 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 21:45:34,350 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 21:45:34,350 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 21:45:34,350 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 21:45:34,351 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 21:45:34,351 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 21:45:34,351 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 21:45:34,351 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 21:45:34,366 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-07-19 21:45:34,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-19 21:45:34,371 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:45:34,372 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] [2020-07-19 21:45:34,372 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:45:34,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:45:34,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1314760119, now seen corresponding path program 1 times [2020-07-19 21:45:34,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:45:34,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460609244] [2020-07-19 21:45:34,385 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4c36ee9e [2020-07-19 21:45:34,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:45:34,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:45:34,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:45:34,574 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 21:45:34,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460609244] [2020-07-19 21:45:34,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:45:34,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-19 21:45:34,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707330784] [2020-07-19 21:45:34,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-19 21:45:34,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:45:34,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-19 21:45:34,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-19 21:45:34,597 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 3 states. [2020-07-19 21:45:34,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:45:34,712 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2020-07-19 21:45:34,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-19 21:45:34,715 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-07-19 21:45:34,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:45:34,723 INFO L225 Difference]: With dead ends: 58 [2020-07-19 21:45:34,724 INFO L226 Difference]: Without dead ends: 29 [2020-07-19 21:45:34,727 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 21:45:34,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-07-19 21:45:34,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-07-19 21:45:34,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-19 21:45:34,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-07-19 21:45:34,769 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 22 [2020-07-19 21:45:34,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:45:34,770 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-07-19 21:45:34,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-19 21:45:34,770 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-07-19 21:45:34,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-19 21:45:34,771 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:45:34,772 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] [2020-07-19 21:45:34,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-19 21:45:34,773 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:45:34,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:45:34,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1901566133, now seen corresponding path program 1 times [2020-07-19 21:45:34,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:45:34,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453382831] [2020-07-19 21:45:34,774 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4c36ee9e [2020-07-19 21:45:34,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:45:34,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:45:34,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:45:34,903 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 21:45:34,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453382831] [2020-07-19 21:45:34,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:45:34,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-19 21:45:34,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324840591] [2020-07-19 21:45:34,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-19 21:45:34,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:45:34,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-19 21:45:34,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-19 21:45:34,907 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 5 states. [2020-07-19 21:45:35,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:45:35,035 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2020-07-19 21:45:35,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-19 21:45:35,035 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-07-19 21:45:35,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:45:35,038 INFO L225 Difference]: With dead ends: 51 [2020-07-19 21:45:35,038 INFO L226 Difference]: Without dead ends: 37 [2020-07-19 21:45:35,040 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 21:45:35,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-07-19 21:45:35,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2020-07-19 21:45:35,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-07-19 21:45:35,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-07-19 21:45:35,052 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 22 [2020-07-19 21:45:35,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:45:35,053 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-07-19 21:45:35,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-19 21:45:35,053 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-07-19 21:45:35,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-19 21:45:35,054 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:45:35,054 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] [2020-07-19 21:45:35,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-19 21:45:35,055 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:45:35,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:45:35,055 INFO L82 PathProgramCache]: Analyzing trace with hash -69884793, now seen corresponding path program 1 times [2020-07-19 21:45:35,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:45:35,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017514813] [2020-07-19 21:45:35,056 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4c36ee9e [2020-07-19 21:45:35,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 21:45:35,087 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 21:45:35,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 21:45:35,122 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 21:45:35,170 INFO L174 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2020-07-19 21:45:35,173 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-19 21:45:35,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-19 21:45:35,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 09:45:35 BoogieIcfgContainer [2020-07-19 21:45:35,239 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-19 21:45:35,241 INFO L168 Benchmark]: Toolchain (without parser) took 1754.34 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 102.2 MB in the beginning and 104.5 MB in the end (delta: -2.3 MB). Peak memory consumption was 54.9 MB. Max. memory is 7.1 GB. [2020-07-19 21:45:35,242 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 145.2 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-07-19 21:45:35,243 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.71 ms. Allocated memory is still 145.2 MB. Free memory was 101.8 MB in the beginning and 91.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-07-19 21:45:35,244 INFO L168 Benchmark]: Boogie Preprocessor took 121.80 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 91.5 MB in the beginning and 180.4 MB in the end (delta: -88.9 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-07-19 21:45:35,245 INFO L168 Benchmark]: RCFGBuilder took 351.47 ms. Allocated memory is still 202.4 MB. Free memory was 180.4 MB in the beginning and 163.3 MB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 7.1 GB. [2020-07-19 21:45:35,246 INFO L168 Benchmark]: TraceAbstraction took 944.34 ms. Allocated memory is still 202.4 MB. Free memory was 162.6 MB in the beginning and 104.5 MB in the end (delta: 58.1 MB). Peak memory consumption was 58.1 MB. Max. memory is 7.1 GB. [2020-07-19 21:45:35,250 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 145.2 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 330.71 ms. Allocated memory is still 145.2 MB. Free memory was 101.8 MB in the beginning and 91.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.80 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 91.5 MB in the beginning and 180.4 MB in the end (delta: -88.9 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 351.47 ms. Allocated memory is still 202.4 MB. Free memory was 180.4 MB in the beginning and 163.3 MB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 944.34 ms. Allocated memory is still 202.4 MB. Free memory was 162.6 MB in the beginning and 104.5 MB in the end (delta: 58.1 MB). Peak memory consumption was 58.1 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)=6, 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] int sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] sum[0] = 1 [L30] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={3:0}] [L30] COND TRUE i