/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --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/s32iff.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 02:20:50,187 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 02:20:50,189 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 02:20:50,214 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 02:20:50,215 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 02:20:50,216 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 02:20:50,217 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 02:20:50,219 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 02:20:50,224 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 02:20:50,225 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 02:20:50,226 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 02:20:50,230 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 02:20:50,230 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 02:20:50,233 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 02:20:50,234 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 02:20:50,235 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 02:20:50,236 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 02:20:50,237 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 02:20:50,238 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 02:20:50,240 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 02:20:50,242 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 02:20:50,243 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 02:20:50,244 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 02:20:50,245 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 02:20:50,247 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 02:20:50,247 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 02:20:50,247 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 02:20:50,248 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 02:20:50,249 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 02:20:50,250 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 02:20:50,250 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 02:20:50,251 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 02:20:50,251 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 02:20:50,252 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 02:20:50,253 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 02:20:50,253 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 02:20:50,254 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 02:20:50,254 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 02:20:50,254 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 02:20:50,255 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 02:20:50,256 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 02:20:50,257 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 02:20:50,280 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 02:20:50,280 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 02:20:50,282 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 02:20:50,282 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 02:20:50,282 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 02:20:50,282 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 02:20:50,282 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 02:20:50,283 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 02:20:50,283 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 02:20:50,283 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 02:20:50,283 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 02:20:50,283 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 02:20:50,284 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 02:20:50,284 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 02:20:50,284 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 02:20:50,284 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 02:20:50,284 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 02:20:50,285 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 02:20:50,285 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 02:20:50,285 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 02:20:50,285 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 02:20:50,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 02:20:50,286 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 02:20:50,286 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 02:20:50,286 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 02:20:50,286 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 02:20:50,286 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 02:20:50,287 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 02:20:50,287 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 02:20:50,287 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=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-08-22 02:20:50,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 02:20:50,609 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 02:20:50,613 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 02:20:50,614 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 02:20:50,615 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 02:20:50,615 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s32iff.c [2020-08-22 02:20:50,683 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0238dd8dc/1fd7843ec04c4735ae0671ef05289798/FLAG2ef9d614e [2020-08-22 02:20:51,143 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 02:20:51,143 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s32iff.c [2020-08-22 02:20:51,149 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0238dd8dc/1fd7843ec04c4735ae0671ef05289798/FLAG2ef9d614e [2020-08-22 02:20:51,564 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0238dd8dc/1fd7843ec04c4735ae0671ef05289798 [2020-08-22 02:20:51,573 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 02:20:51,575 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 02:20:51,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 02:20:51,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 02:20:51,580 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 02:20:51,581 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:20:51" (1/1) ... [2020-08-22 02:20:51,584 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3567e854 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:20:51, skipping insertion in model container [2020-08-22 02:20:51,585 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:20:51" (1/1) ... [2020-08-22 02:20:51,593 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 02:20:51,615 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 02:20:51,845 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:20:51,853 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 02:20:51,876 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:20:51,892 INFO L208 MainTranslator]: Completed translation [2020-08-22 02:20:51,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:20:51 WrapperNode [2020-08-22 02:20:51,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 02:20:51,894 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 02:20:51,894 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 02:20:51,894 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 02:20:51,985 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:20:51" (1/1) ... [2020-08-22 02:20:51,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:20:51" (1/1) ... [2020-08-22 02:20:51,994 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:20:51" (1/1) ... [2020-08-22 02:20:51,995 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:20:51" (1/1) ... [2020-08-22 02:20:52,005 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:20:51" (1/1) ... [2020-08-22 02:20:52,011 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:20:51" (1/1) ... [2020-08-22 02:20:52,012 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:20:51" (1/1) ... [2020-08-22 02:20:52,015 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 02:20:52,016 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 02:20:52,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 02:20:52,016 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 02:20:52,017 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:20:51" (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 02:20:52,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 02:20:52,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 02:20:52,099 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 02:20:52,099 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 02:20:52,099 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 02:20:52,100 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 02:20:52,101 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 02:20:52,101 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 02:20:52,101 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 02:20:52,102 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 02:20:52,103 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 02:20:52,103 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 02:20:52,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 02:20:52,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 02:20:52,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 02:20:52,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 02:20:52,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 02:20:52,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 02:20:52,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 02:20:52,473 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 02:20:52,474 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-08-22 02:20:52,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:20:52 BoogieIcfgContainer [2020-08-22 02:20:52,478 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 02:20:52,479 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 02:20:52,480 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 02:20:52,483 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 02:20:52,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 02:20:51" (1/3) ... [2020-08-22 02:20:52,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43425284 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:20:52, skipping insertion in model container [2020-08-22 02:20:52,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:20:51" (2/3) ... [2020-08-22 02:20:52,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43425284 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:20:52, skipping insertion in model container [2020-08-22 02:20:52,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:20:52" (3/3) ... [2020-08-22 02:20:52,486 INFO L109 eAbstractionObserver]: Analyzing ICFG s32iff.c [2020-08-22 02:20:52,497 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 02:20:52,503 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 02:20:52,517 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 02:20:52,540 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 02:20:52,540 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 02:20:52,540 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 02:20:52,540 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 02:20:52,541 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 02:20:52,541 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 02:20:52,541 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 02:20:52,541 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 02:20:52,560 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-08-22 02:20:52,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-22 02:20:52,566 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:20:52,567 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] [2020-08-22 02:20:52,568 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:20:52,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:20:52,573 INFO L82 PathProgramCache]: Analyzing trace with hash 2033030480, now seen corresponding path program 1 times [2020-08-22 02:20:52,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:20:52,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157631541] [2020-08-22 02:20:52,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:20:52,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:20:52,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:20:52,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:20:52,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 02:20:52,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:20:52,784 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 02:20:52,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [157631541] [2020-08-22 02:20:52,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:20:52,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 02:20:52,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554865975] [2020-08-22 02:20:52,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 02:20:52,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:20:52,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 02:20:52,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 02:20:52,814 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2020-08-22 02:20:52,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:20:52,946 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2020-08-22 02:20:52,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 02:20:52,948 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-08-22 02:20:52,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:20:52,955 INFO L225 Difference]: With dead ends: 62 [2020-08-22 02:20:52,955 INFO L226 Difference]: Without dead ends: 29 [2020-08-22 02:20:52,958 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 02:20:52,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-08-22 02:20:52,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-08-22 02:20:52,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-08-22 02:20:52,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-08-22 02:20:52,996 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 23 [2020-08-22 02:20:52,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:20:52,997 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-08-22 02:20:52,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 02:20:52,997 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-08-22 02:20:52,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-22 02:20:52,998 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:20:52,999 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] [2020-08-22 02:20:52,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 02:20:52,999 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:20:53,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:20:53,000 INFO L82 PathProgramCache]: Analyzing trace with hash 706992569, now seen corresponding path program 1 times [2020-08-22 02:20:53,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:20:53,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1902489613] [2020-08-22 02:20:53,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:20:53,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:20:53,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:20:53,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:20:53,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 02:20:53,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:20:53,129 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 02:20:53,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1902489613] [2020-08-22 02:20:53,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:20:53,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 02:20:53,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351746335] [2020-08-22 02:20:53,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 02:20:53,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:20:53,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 02:20:53,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 02:20:53,134 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 5 states. [2020-08-22 02:20:53,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:20:53,275 INFO L93 Difference]: Finished difference Result 51 states and 63 transitions. [2020-08-22 02:20:53,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 02:20:53,276 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-08-22 02:20:53,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:20:53,277 INFO L225 Difference]: With dead ends: 51 [2020-08-22 02:20:53,277 INFO L226 Difference]: Without dead ends: 37 [2020-08-22 02:20:53,279 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 02:20:53,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-08-22 02:20:53,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2020-08-22 02:20:53,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-08-22 02:20:53,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-08-22 02:20:53,289 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 23 [2020-08-22 02:20:53,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:20:53,289 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-08-22 02:20:53,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 02:20:53,290 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-08-22 02:20:53,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-22 02:20:53,291 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:20:53,291 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] [2020-08-22 02:20:53,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 02:20:53,292 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:20:53,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:20:53,292 INFO L82 PathProgramCache]: Analyzing trace with hash 284203188, now seen corresponding path program 1 times [2020-08-22 02:20:53,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:20:53,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1644257819] [2020-08-22 02:20:53,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:20:53,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 02:20:53,347 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 02:20:53,347 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 02:20:53,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 02:20:53,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 02:20:53 BoogieIcfgContainer [2020-08-22 02:20:53,371 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 02:20:53,374 INFO L168 Benchmark]: Toolchain (without parser) took 1798.98 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 101.5 MB in the beginning and 101.8 MB in the end (delta: -232.1 kB). Peak memory consumption was 62.2 MB. Max. memory is 7.1 GB. [2020-08-22 02:20:53,376 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 138.4 MB. Free memory was 120.0 MB in the beginning and 119.5 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-08-22 02:20:53,377 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.40 ms. Allocated memory is still 138.4 MB. Free memory was 101.5 MB in the beginning and 90.5 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2020-08-22 02:20:53,378 INFO L168 Benchmark]: Boogie Preprocessor took 121.59 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 90.5 MB in the beginning and 177.8 MB in the end (delta: -87.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-08-22 02:20:53,379 INFO L168 Benchmark]: RCFGBuilder took 462.40 ms. Allocated memory is still 200.8 MB. Free memory was 177.8 MB in the beginning and 159.8 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. [2020-08-22 02:20:53,380 INFO L168 Benchmark]: TraceAbstraction took 892.12 ms. Allocated memory is still 200.8 MB. Free memory was 158.8 MB in the beginning and 101.8 MB in the end (delta: 57.0 MB). Peak memory consumption was 57.0 MB. Max. memory is 7.1 GB. [2020-08-22 02:20:53,384 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 138.4 MB. Free memory was 120.0 MB in the beginning and 119.5 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 317.40 ms. Allocated memory is still 138.4 MB. Free memory was 101.5 MB in the beginning and 90.5 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.59 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 90.5 MB in the beginning and 177.8 MB in the end (delta: -87.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 462.40 ms. Allocated memory is still 200.8 MB. Free memory was 177.8 MB in the beginning and 159.8 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 892.12 ms. Allocated memory is still 200.8 MB. Free memory was 158.8 MB in the beginning and 101.8 MB in the end (delta: 57.0 MB). Peak memory consumption was 57.0 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; [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] int *a = malloc(sizeof(int)*N); [L29] sum[0] = 1 [L30] i=0 [L30] COND TRUE i