/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.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/array-fpi/sina4f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 23:00:48,043 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 23:00:48,046 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 23:00:48,077 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 23:00:48,077 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 23:00:48,078 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 23:00:48,080 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 23:00:48,082 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 23:00:48,083 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 23:00:48,084 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 23:00:48,085 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 23:00:48,086 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 23:00:48,086 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 23:00:48,087 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 23:00:48,088 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 23:00:48,089 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 23:00:48,090 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 23:00:48,092 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 23:00:48,094 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 23:00:48,096 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 23:00:48,098 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 23:00:48,100 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 23:00:48,101 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 23:00:48,102 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 23:00:48,105 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 23:00:48,106 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 23:00:48,106 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 23:00:48,107 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 23:00:48,107 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 23:00:48,108 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 23:00:48,109 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 23:00:48,109 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 23:00:48,110 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 23:00:48,111 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 23:00:48,112 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 23:00:48,112 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 23:00:48,113 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 23:00:48,113 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 23:00:48,113 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 23:00:48,114 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 23:00:48,115 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 23:00:48,116 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 23:00:48,125 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 23:00:48,126 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 23:00:48,127 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 23:00:48,127 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 23:00:48,127 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 23:00:48,127 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 23:00:48,127 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 23:00:48,128 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 23:00:48,128 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 23:00:48,128 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 23:00:48,128 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 23:00:48,128 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 23:00:48,129 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 23:00:48,129 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 23:00:48,129 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 23:00:48,129 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 23:00:48,129 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 23:00:48,130 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 23:00:48,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 23:00:48,130 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 23:00:48,130 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 23:00:48,130 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 23:00:48,131 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-08-22 23:00:48,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 23:00:48,428 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 23:00:48,432 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 23:00:48,433 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 23:00:48,434 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 23:00:48,434 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sina4f.c [2020-08-22 23:00:48,501 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bcd46bec/c461c23d50884373afbe3a7032e62eff/FLAG7a307f8cf [2020-08-22 23:00:48,922 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 23:00:48,923 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/sina4f.c [2020-08-22 23:00:48,931 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bcd46bec/c461c23d50884373afbe3a7032e62eff/FLAG7a307f8cf [2020-08-22 23:00:49,307 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bcd46bec/c461c23d50884373afbe3a7032e62eff [2020-08-22 23:00:49,317 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 23:00:49,320 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 23:00:49,321 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 23:00:49,321 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 23:00:49,325 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 23:00:49,326 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 11:00:49" (1/1) ... [2020-08-22 23:00:49,329 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1721e934 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:49, skipping insertion in model container [2020-08-22 23:00:49,330 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 11:00:49" (1/1) ... [2020-08-22 23:00:49,338 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 23:00:49,359 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 23:00:49,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 23:00:49,663 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 23:00:49,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 23:00:49,789 INFO L208 MainTranslator]: Completed translation [2020-08-22 23:00:49,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:49 WrapperNode [2020-08-22 23:00:49,790 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 23:00:49,791 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 23:00:49,791 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 23:00:49,791 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 23:00:49,802 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:49" (1/1) ... [2020-08-22 23:00:49,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:49" (1/1) ... [2020-08-22 23:00:49,811 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:49" (1/1) ... [2020-08-22 23:00:49,811 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:49" (1/1) ... [2020-08-22 23:00:49,821 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:49" (1/1) ... [2020-08-22 23:00:49,828 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:49" (1/1) ... [2020-08-22 23:00:49,830 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:49" (1/1) ... [2020-08-22 23:00:49,832 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 23:00:49,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 23:00:49,833 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 23:00:49,833 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 23:00:49,834 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:49" (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 [2020-08-22 23:00:49,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 23:00:49,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 23:00:49,907 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 23:00:49,907 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 23:00:49,907 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 23:00:49,908 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 23:00:49,908 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 23:00:49,908 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 23:00:49,908 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 23:00:49,908 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 23:00:49,908 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 23:00:49,909 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 23:00:49,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 23:00:49,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 23:00:49,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 23:00:49,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 23:00:49,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 23:00:49,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 23:00:49,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 23:00:50,283 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 23:00:50,284 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 23:00:50,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 11:00:50 BoogieIcfgContainer [2020-08-22 23:00:50,289 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 23:00:50,290 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 23:00:50,290 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 23:00:50,294 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 23:00:50,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 11:00:49" (1/3) ... [2020-08-22 23:00:50,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3935a3d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 11:00:50, skipping insertion in model container [2020-08-22 23:00:50,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:49" (2/3) ... [2020-08-22 23:00:50,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3935a3d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 11:00:50, skipping insertion in model container [2020-08-22 23:00:50,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 11:00:50" (3/3) ... [2020-08-22 23:00:50,297 INFO L109 eAbstractionObserver]: Analyzing ICFG sina4f.c [2020-08-22 23:00:50,308 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 23:00:50,315 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 23:00:50,327 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 23:00:50,349 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 23:00:50,350 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 23:00:50,350 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 23:00:50,350 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 23:00:50,350 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 23:00:50,350 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 23:00:50,351 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 23:00:50,351 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 23:00:50,366 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states. [2020-08-22 23:00:50,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-08-22 23:00:50,376 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:00:50,377 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:00:50,378 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:00:50,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:00:50,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1015859133, now seen corresponding path program 1 times [2020-08-22 23:00:50,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:00:50,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1397437715] [2020-08-22 23:00:50,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:00:50,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:00:50,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:00:50,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:00:50,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 23:00:50,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:00:50,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 23:00:50,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1397437715] [2020-08-22 23:00:50,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 23:00:50,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 23:00:50,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657876612] [2020-08-22 23:00:50,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 23:00:50,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:00:50,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 23:00:50,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 23:00:50,687 INFO L87 Difference]: Start difference. First operand 81 states. Second operand 3 states. [2020-08-22 23:00:50,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:00:50,923 INFO L93 Difference]: Finished difference Result 145 states and 168 transitions. [2020-08-22 23:00:50,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 23:00:50,925 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2020-08-22 23:00:50,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:00:50,937 INFO L225 Difference]: With dead ends: 145 [2020-08-22 23:00:50,937 INFO L226 Difference]: Without dead ends: 72 [2020-08-22 23:00:50,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 23:00:50,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-08-22 23:00:50,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-08-22 23:00:50,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-08-22 23:00:50,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2020-08-22 23:00:51,000 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 39 [2020-08-22 23:00:51,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:00:51,001 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2020-08-22 23:00:51,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 23:00:51,001 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2020-08-22 23:00:51,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-08-22 23:00:51,003 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:00:51,003 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:00:51,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 23:00:51,004 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:00:51,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:00:51,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1834550526, now seen corresponding path program 1 times [2020-08-22 23:00:51,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:00:51,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [573138106] [2020-08-22 23:00:51,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:00:51,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:00:51,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:00:51,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:00:51,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 23:00:51,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:00:51,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 23:00:51,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [573138106] [2020-08-22 23:00:51,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 23:00:51,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 23:00:51,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452937704] [2020-08-22 23:00:51,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 23:00:51,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:00:51,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 23:00:51,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 23:00:51,165 INFO L87 Difference]: Start difference. First operand 72 states and 76 transitions. Second operand 5 states. [2020-08-22 23:00:51,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:00:51,489 INFO L93 Difference]: Finished difference Result 146 states and 158 transitions. [2020-08-22 23:00:51,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 23:00:51,490 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-08-22 23:00:51,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:00:51,494 INFO L225 Difference]: With dead ends: 146 [2020-08-22 23:00:51,494 INFO L226 Difference]: Without dead ends: 104 [2020-08-22 23:00:51,495 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 [2020-08-22 23:00:51,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-08-22 23:00:51,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 76. [2020-08-22 23:00:51,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-22 23:00:51,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2020-08-22 23:00:51,520 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 39 [2020-08-22 23:00:51,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:00:51,520 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2020-08-22 23:00:51,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 23:00:51,520 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2020-08-22 23:00:51,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-08-22 23:00:51,523 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:00:51,523 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:00:51,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 23:00:51,524 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:00:51,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:00:51,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1779508689, now seen corresponding path program 1 times [2020-08-22 23:00:51,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:00:51,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1674817760] [2020-08-22 23:00:51,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:00:51,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 23:00:51,626 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 23:00:51,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 23:00:51,712 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 23:00:51,765 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 23:00:51,766 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 23:00:51,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 23:00:51,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 11:00:51 BoogieIcfgContainer [2020-08-22 23:00:51,864 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 23:00:51,866 INFO L168 Benchmark]: Toolchain (without parser) took 2546.37 ms. Allocated memory was 137.9 MB in the beginning and 233.3 MB in the end (delta: 95.4 MB). Free memory was 101.6 MB in the beginning and 176.8 MB in the end (delta: -75.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2020-08-22 23:00:51,867 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 137.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 23:00:51,868 INFO L168 Benchmark]: CACSL2BoogieTranslator took 469.65 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 101.4 MB in the beginning and 180.7 MB in the end (delta: -79.3 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. [2020-08-22 23:00:51,869 INFO L168 Benchmark]: Boogie Preprocessor took 41.78 ms. Allocated memory is still 201.9 MB. Free memory was 180.7 MB in the beginning and 178.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2020-08-22 23:00:51,870 INFO L168 Benchmark]: RCFGBuilder took 455.86 ms. Allocated memory is still 201.9 MB. Free memory was 178.2 MB in the beginning and 156.2 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-08-22 23:00:51,871 INFO L168 Benchmark]: TraceAbstraction took 1573.68 ms. Allocated memory was 201.9 MB in the beginning and 233.3 MB in the end (delta: 31.5 MB). Free memory was 155.5 MB in the beginning and 176.8 MB in the end (delta: -21.3 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-08-22 23:00:51,876 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 137.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 469.65 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 101.4 MB in the beginning and 180.7 MB in the end (delta: -79.3 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 41.78 ms. Allocated memory is still 201.9 MB. Free memory was 180.7 MB in the beginning and 178.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 455.86 ms. Allocated memory is still 201.9 MB. Free memory was 178.2 MB in the beginning and 156.2 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1573.68 ms. Allocated memory was 201.9 MB in the beginning and 233.3 MB in the end (delta: 31.5 MB). Free memory was 155.5 MB in the beginning and 176.8 MB in the end (delta: -21.3 MB). Peak memory consumption was 10.1 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)=10, N=0] [L21] N = __VERIFIER_nondet_int() VAL [\old(N)=0, __VERIFIER_nondet_int()=1, N=1] [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; VAL [\old(N)=0, N=1] [L26] long long sum[1]; VAL [\old(N)=0, N=1, sum={4:0}] [L27] long long *a = malloc(sizeof(long long)*N); VAL [\old(N)=0, a={-1:0}, malloc(sizeof(long long)*N)={-1:0}, N=1, sum={4:0}] [L28] long long *b = malloc(sizeof(long long)*N); VAL [\old(N)=0, a={-1:0}, b={-2:0}, malloc(sizeof(long long)*N)={-2:0}, malloc(sizeof(long long)*N)={-1:0}, N=1, sum={4:0}] [L30] sum[0] = 0 VAL [\old(N)=0, a={-1:0}, b={-2:0}, malloc(sizeof(long long)*N)={-2:0}, malloc(sizeof(long long)*N)={-1:0}, N=1, sum={4:0}] [L31] i=0 VAL [\old(N)=0, a={-1:0}, b={-2:0}, i=0, malloc(sizeof(long long)*N)={-2:0}, malloc(sizeof(long long)*N)={-1:0}, N=1, sum={4:0}] [L31] COND TRUE i