/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 FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/ss3f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 05:35:17,122 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 05:35:17,125 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 05:35:17,164 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 05:35:17,166 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 05:35:17,177 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 05:35:17,178 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 05:35:17,182 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 05:35:17,184 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 05:35:17,188 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 05:35:17,189 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 05:35:17,191 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 05:35:17,191 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 05:35:17,194 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 05:35:17,197 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 05:35:17,198 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 05:35:17,200 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 05:35:17,201 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 05:35:17,203 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 05:35:17,205 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 05:35:17,207 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 05:35:17,213 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 05:35:17,214 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 05:35:17,214 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 05:35:17,217 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 05:35:17,217 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 05:35:17,217 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 05:35:17,218 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 05:35:17,219 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 05:35:17,219 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 05:35:17,220 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 05:35:17,220 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 05:35:17,221 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 05:35:17,222 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 05:35:17,223 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 05:35:17,223 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 05:35:17,224 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 05:35:17,224 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 05:35:17,224 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 05:35:17,225 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 05:35:17,225 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 05:35:17,226 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 [2020-08-22 05:35:17,248 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 05:35:17,248 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 05:35:17,250 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 05:35:17,250 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 05:35:17,250 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 05:35:17,250 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 05:35:17,250 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 05:35:17,251 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 05:35:17,251 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 05:35:17,251 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 05:35:17,251 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 05:35:17,251 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 05:35:17,252 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 05:35:17,252 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 05:35:17,252 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 05:35:17,252 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 05:35:17,252 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 05:35:17,253 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 05:35:17,253 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 05:35:17,253 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 05:35:17,253 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 05:35:17,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 05:35:17,254 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 05:35:17,254 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 05:35:17,254 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 05:35:17,254 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 05:35:17,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 05:35:17,255 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 05:35:17,255 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 05:35:17,255 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES 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: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-08-22 05:35:17,556 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 05:35:17,569 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 05:35:17,572 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 05:35:17,574 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 05:35:17,575 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 05:35:17,575 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ss3f.c [2020-08-22 05:35:17,649 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/78d3086e3/cc640a37360640bca0ee901de34bde4c/FLAG62cfa350d [2020-08-22 05:35:18,185 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 05:35:18,186 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ss3f.c [2020-08-22 05:35:18,194 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/78d3086e3/cc640a37360640bca0ee901de34bde4c/FLAG62cfa350d [2020-08-22 05:35:18,512 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/78d3086e3/cc640a37360640bca0ee901de34bde4c [2020-08-22 05:35:18,522 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 05:35:18,524 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 05:35:18,527 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 05:35:18,527 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 05:35:18,531 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 05:35:18,532 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:35:18" (1/1) ... [2020-08-22 05:35:18,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cdd711c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:35:18, skipping insertion in model container [2020-08-22 05:35:18,535 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:35:18" (1/1) ... [2020-08-22 05:35:18,542 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 05:35:18,560 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 05:35:18,750 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:35:18,761 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 05:35:18,786 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:35:18,885 INFO L208 MainTranslator]: Completed translation [2020-08-22 05:35:18,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:35:18 WrapperNode [2020-08-22 05:35:18,887 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 05:35:18,888 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 05:35:18,889 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 05:35:18,889 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 05:35:18,903 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:35:18" (1/1) ... [2020-08-22 05:35:18,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:35:18" (1/1) ... [2020-08-22 05:35:18,922 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:35:18" (1/1) ... [2020-08-22 05:35:18,923 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:35:18" (1/1) ... [2020-08-22 05:35:18,933 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:35:18" (1/1) ... [2020-08-22 05:35:18,939 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:35:18" (1/1) ... [2020-08-22 05:35:18,941 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:35:18" (1/1) ... [2020-08-22 05:35:18,944 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 05:35:18,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 05:35:18,945 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 05:35:18,945 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 05:35:18,949 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:35:18" (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 [2020-08-22 05:35:19,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 05:35:19,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 05:35:19,009 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 05:35:19,009 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 05:35:19,009 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 05:35:19,009 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 05:35:19,009 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 05:35:19,010 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 05:35:19,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 05:35:19,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 05:35:19,010 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 05:35:19,010 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 05:35:19,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 05:35:19,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 05:35:19,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 05:35:19,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 05:35:19,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 05:35:19,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 05:35:19,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 05:35:19,280 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 05:35:19,281 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 05:35:19,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:35:19 BoogieIcfgContainer [2020-08-22 05:35:19,286 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 05:35:19,288 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 05:35:19,288 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 05:35:19,291 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 05:35:19,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 05:35:18" (1/3) ... [2020-08-22 05:35:19,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eed2ff2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:35:19, skipping insertion in model container [2020-08-22 05:35:19,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:35:18" (2/3) ... [2020-08-22 05:35:19,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eed2ff2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:35:19, skipping insertion in model container [2020-08-22 05:35:19,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:35:19" (3/3) ... [2020-08-22 05:35:19,294 INFO L109 eAbstractionObserver]: Analyzing ICFG ss3f.c [2020-08-22 05:35:19,307 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 05:35:19,315 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 05:35:19,341 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 05:35:19,368 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 05:35:19,369 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 05:35:19,369 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 05:35:19,369 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 05:35:19,369 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 05:35:19,370 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 05:35:19,370 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 05:35:19,370 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 05:35:19,393 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-08-22 05:35:19,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-22 05:35:19,404 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:35:19,405 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] [2020-08-22 05:35:19,405 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:35:19,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:35:19,411 INFO L82 PathProgramCache]: Analyzing trace with hash -976607933, now seen corresponding path program 1 times [2020-08-22 05:35:19,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:35:19,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1309751581] [2020-08-22 05:35:19,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:35:19,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:35:19,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:35:19,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:35:19,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 05:35:19,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:35:19,641 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 05:35:19,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1309751581] [2020-08-22 05:35:19,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:35:19,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 05:35:19,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700497200] [2020-08-22 05:35:19,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 05:35:19,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:35:19,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 05:35:19,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 05:35:19,673 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2020-08-22 05:35:19,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:35:19,834 INFO L93 Difference]: Finished difference Result 70 states and 93 transitions. [2020-08-22 05:35:19,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 05:35:19,839 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-08-22 05:35:19,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:35:19,855 INFO L225 Difference]: With dead ends: 70 [2020-08-22 05:35:19,855 INFO L226 Difference]: Without dead ends: 33 [2020-08-22 05:35:19,861 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 [2020-08-22 05:35:19,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-08-22 05:35:19,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-08-22 05:35:19,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-08-22 05:35:19,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-08-22 05:35:19,924 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 27 [2020-08-22 05:35:19,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:35:19,925 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-08-22 05:35:19,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 05:35:19,926 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-08-22 05:35:19,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-22 05:35:19,929 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:35:19,929 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] [2020-08-22 05:35:19,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 05:35:19,931 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:35:19,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:35:19,931 INFO L82 PathProgramCache]: Analyzing trace with hash -714487667, now seen corresponding path program 1 times [2020-08-22 05:35:19,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:35:19,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [423334343] [2020-08-22 05:35:19,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:35:20,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:35:20,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:35:20,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:35:20,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 05:35:20,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:35:20,113 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 05:35:20,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [423334343] [2020-08-22 05:35:20,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:35:20,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 05:35:20,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764804512] [2020-08-22 05:35:20,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 05:35:20,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:35:20,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 05:35:20,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:35:20,118 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 5 states. [2020-08-22 05:35:20,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:35:20,292 INFO L93 Difference]: Finished difference Result 61 states and 73 transitions. [2020-08-22 05:35:20,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 05:35:20,293 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-08-22 05:35:20,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:35:20,295 INFO L225 Difference]: With dead ends: 61 [2020-08-22 05:35:20,295 INFO L226 Difference]: Without dead ends: 43 [2020-08-22 05:35:20,297 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 05:35:20,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-22 05:35:20,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2020-08-22 05:35:20,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-08-22 05:35:20,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2020-08-22 05:35:20,310 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 27 [2020-08-22 05:35:20,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:35:20,310 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2020-08-22 05:35:20,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 05:35:20,311 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2020-08-22 05:35:20,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-22 05:35:20,313 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:35:20,313 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] [2020-08-22 05:35:20,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 05:35:20,313 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:35:20,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:35:20,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1064141225, now seen corresponding path program 1 times [2020-08-22 05:35:20,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:35:20,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2130045567] [2020-08-22 05:35:20,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:35:20,351 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-22 05:35:20,351 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-08-22 05:35:20,351 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 05:35:20,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 05:35:20,375 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-22 05:35:20,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 05:35:20 BoogieIcfgContainer [2020-08-22 05:35:20,376 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 05:35:20,379 INFO L168 Benchmark]: Toolchain (without parser) took 1854.28 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 101.8 MB in the beginning and 100.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 65.2 MB. Max. memory is 7.1 GB. [2020-08-22 05:35:20,380 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 05:35:20,381 INFO L168 Benchmark]: CACSL2BoogieTranslator took 360.38 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 101.5 MB in the beginning and 181.2 MB in the end (delta: -79.7 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2020-08-22 05:35:20,382 INFO L168 Benchmark]: Boogie Preprocessor took 56.74 ms. Allocated memory is still 202.4 MB. Free memory was 181.2 MB in the beginning and 178.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-08-22 05:35:20,383 INFO L168 Benchmark]: RCFGBuilder took 341.82 ms. Allocated memory is still 202.4 MB. Free memory was 178.8 MB in the beginning and 159.9 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. [2020-08-22 05:35:20,384 INFO L168 Benchmark]: TraceAbstraction took 1088.48 ms. Allocated memory is still 202.4 MB. Free memory was 159.2 MB in the beginning and 100.0 MB in the end (delta: 59.2 MB). Peak memory consumption was 59.2 MB. Max. memory is 7.1 GB. [2020-08-22 05:35:20,388 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 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 360.38 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 101.5 MB in the beginning and 181.2 MB in the end (delta: -79.7 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 56.74 ms. Allocated memory is still 202.4 MB. Free memory was 181.2 MB in the beginning and 178.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 341.82 ms. Allocated memory is still 202.4 MB. Free memory was 178.8 MB in the beginning and 159.9 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1088.48 ms. Allocated memory is still 202.4 MB. Free memory was 159.2 MB in the beginning and 100.0 MB in the end (delta: 59.2 MB). Peak memory consumption was 59.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long sum[1]; [L27] long long *a = malloc(sizeof(long long)*N); [L29] sum[0] = 0 [L30] i=0 [L30] COND TRUE i