/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/modsf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 02:20:42,281 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 02:20:42,284 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 02:20:42,324 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 02:20:42,324 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 02:20:42,325 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 02:20:42,326 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 02:20:42,328 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 02:20:42,330 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 02:20:42,331 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 02:20:42,331 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 02:20:42,333 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 02:20:42,333 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 02:20:42,334 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 02:20:42,335 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 02:20:42,336 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 02:20:42,337 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 02:20:42,337 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 02:20:42,339 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 02:20:42,341 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 02:20:42,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 02:20:42,343 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 02:20:42,344 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 02:20:42,345 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 02:20:42,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 02:20:42,347 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 02:20:42,347 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 02:20:42,348 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 02:20:42,349 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 02:20:42,349 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 02:20:42,350 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 02:20:42,350 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 02:20:42,351 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 02:20:42,352 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 02:20:42,353 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 02:20:42,353 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 02:20:42,354 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 02:20:42,354 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 02:20:42,354 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 02:20:42,355 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 02:20:42,355 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 02:20:42,356 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 02:20:42,379 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 02:20:42,380 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 02:20:42,381 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 02:20:42,381 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 02:20:42,381 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 02:20:42,381 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 02:20:42,382 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 02:20:42,382 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 02:20:42,382 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 02:20:42,382 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 02:20:42,382 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 02:20:42,382 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 02:20:42,383 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 02:20:42,383 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 02:20:42,383 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 02:20:42,383 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 02:20:42,383 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 02:20:42,384 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 02:20:42,384 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 02:20:42,384 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 02:20:42,384 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 02:20:42,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 02:20:42,385 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 02:20:42,385 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 02:20:42,385 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 02:20:42,385 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 02:20:42,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 02:20:42,386 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 02:20:42,386 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 02:20:42,386 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 02:20:42,716 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 02:20:42,728 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 02:20:42,732 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 02:20:42,733 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 02:20:42,734 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 02:20:42,734 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/modsf.c [2020-08-22 02:20:42,804 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4a75a2def/0deb5fea75ee448cb8261b20dbd3b6af/FLAGff8952223 [2020-08-22 02:20:43,249 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 02:20:43,249 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/modsf.c [2020-08-22 02:20:43,257 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4a75a2def/0deb5fea75ee448cb8261b20dbd3b6af/FLAGff8952223 [2020-08-22 02:20:43,628 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4a75a2def/0deb5fea75ee448cb8261b20dbd3b6af [2020-08-22 02:20:43,638 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 02:20:43,640 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 02:20:43,641 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 02:20:43,641 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 02:20:43,645 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 02:20:43,646 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:20:43" (1/1) ... [2020-08-22 02:20:43,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@377d8449 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:20:43, skipping insertion in model container [2020-08-22 02:20:43,649 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:20:43" (1/1) ... [2020-08-22 02:20:43,658 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 02:20:43,680 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 02:20:43,877 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:20:43,887 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 02:20:43,911 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:20:43,928 INFO L208 MainTranslator]: Completed translation [2020-08-22 02:20:43,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:20:43 WrapperNode [2020-08-22 02:20:43,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 02:20:43,929 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 02:20:43,929 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 02:20:43,929 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 02:20:44,018 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:20:43" (1/1) ... [2020-08-22 02:20:44,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:20:43" (1/1) ... [2020-08-22 02:20:44,028 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:20:43" (1/1) ... [2020-08-22 02:20:44,028 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:20:43" (1/1) ... [2020-08-22 02:20:44,050 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:20:43" (1/1) ... [2020-08-22 02:20:44,063 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:20:43" (1/1) ... [2020-08-22 02:20:44,069 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:20:43" (1/1) ... [2020-08-22 02:20:44,074 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 02:20:44,075 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 02:20:44,075 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 02:20:44,075 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 02:20:44,075 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:20:43" (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 02:20:44,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 02:20:44,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 02:20:44,133 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 02:20:44,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 02:20:44,133 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 02:20:44,133 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 02:20:44,134 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 02:20:44,134 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 02:20:44,134 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 02:20:44,134 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 02:20:44,134 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 02:20:44,135 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 02:20:44,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 02:20:44,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 02:20:44,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 02:20:44,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 02:20:44,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 02:20:44,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 02:20:44,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 02:20:44,416 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 02:20:44,417 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 02:20:44,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:20:44 BoogieIcfgContainer [2020-08-22 02:20:44,423 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 02:20:44,425 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 02:20:44,425 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 02:20:44,428 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 02:20:44,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 02:20:43" (1/3) ... [2020-08-22 02:20:44,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@283fc16f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:20:44, skipping insertion in model container [2020-08-22 02:20:44,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:20:43" (2/3) ... [2020-08-22 02:20:44,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@283fc16f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:20:44, skipping insertion in model container [2020-08-22 02:20:44,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:20:44" (3/3) ... [2020-08-22 02:20:44,432 INFO L109 eAbstractionObserver]: Analyzing ICFG modsf.c [2020-08-22 02:20:44,446 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 02:20:44,458 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 02:20:44,490 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 02:20:44,528 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 02:20:44,528 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 02:20:44,528 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 02:20:44,528 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 02:20:44,528 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 02:20:44,535 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 02:20:44,536 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 02:20:44,536 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 02:20:44,556 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-08-22 02:20:44,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-22 02:20:44,562 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:20:44,563 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:20:44,564 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:20:44,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:20:44,570 INFO L82 PathProgramCache]: Analyzing trace with hash -173101897, now seen corresponding path program 1 times [2020-08-22 02:20:44,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:20:44,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1603831116] [2020-08-22 02:20:44,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:20:44,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:20:44,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:20:44,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:20:44,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 02:20:44,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:20:44,794 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 02:20:44,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1603831116] [2020-08-22 02:20:44,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:20:44,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 02:20:44,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430698228] [2020-08-22 02:20:44,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 02:20:44,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:20:44,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 02:20:44,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 02:20:44,818 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2020-08-22 02:20:45,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:20:45,038 INFO L93 Difference]: Finished difference Result 70 states and 93 transitions. [2020-08-22 02:20:45,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 02:20:45,042 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-08-22 02:20:45,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:20:45,060 INFO L225 Difference]: With dead ends: 70 [2020-08-22 02:20:45,061 INFO L226 Difference]: Without dead ends: 35 [2020-08-22 02:20:45,066 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 02:20:45,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-08-22 02:20:45,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-08-22 02:20:45,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-08-22 02:20:45,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-08-22 02:20:45,123 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 26 [2020-08-22 02:20:45,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:20:45,124 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-08-22 02:20:45,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 02:20:45,125 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-08-22 02:20:45,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-22 02:20:45,128 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:20:45,129 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:20:45,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 02:20:45,133 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:20:45,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:20:45,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1503462707, now seen corresponding path program 1 times [2020-08-22 02:20:45,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:20:45,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83357136] [2020-08-22 02:20:45,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:20:45,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:20:45,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:20:45,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:20:45,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 02:20:45,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:20:45,293 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 02:20:45,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [83357136] [2020-08-22 02:20:45,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:20:45,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 02:20:45,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675515662] [2020-08-22 02:20:45,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 02:20:45,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:20:45,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 02:20:45,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 02:20:45,298 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 5 states. [2020-08-22 02:20:45,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:20:45,477 INFO L93 Difference]: Finished difference Result 67 states and 79 transitions. [2020-08-22 02:20:45,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 02:20:45,477 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-08-22 02:20:45,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:20:45,481 INFO L225 Difference]: With dead ends: 67 [2020-08-22 02:20:45,481 INFO L226 Difference]: Without dead ends: 47 [2020-08-22 02:20:45,483 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 02:20:45,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-08-22 02:20:45,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 39. [2020-08-22 02:20:45,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-08-22 02:20:45,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-08-22 02:20:45,499 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 26 [2020-08-22 02:20:45,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:20:45,499 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-08-22 02:20:45,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 02:20:45,500 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-08-22 02:20:45,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-22 02:20:45,501 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:20:45,501 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] [2020-08-22 02:20:45,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 02:20:45,502 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:20:45,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:20:45,503 INFO L82 PathProgramCache]: Analyzing trace with hash -260192085, now seen corresponding path program 1 times [2020-08-22 02:20:45,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:20:45,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [593199498] [2020-08-22 02:20:45,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:20:45,532 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-22 02:20:45,533 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-08-22 02:20:45,533 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 02:20:45,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 02:20:45,567 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-22 02:20:45,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 02:20:45 BoogieIcfgContainer [2020-08-22 02:20:45,576 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 02:20:45,582 INFO L168 Benchmark]: Toolchain (without parser) took 1938.61 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 102.6 MB in the beginning and 98.2 MB in the end (delta: 4.3 MB). Peak memory consumption was 66.7 MB. Max. memory is 7.1 GB. [2020-08-22 02:20:45,584 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 02:20:45,585 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.96 ms. Allocated memory is still 138.9 MB. Free memory was 102.4 MB in the beginning and 91.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-08-22 02:20:45,586 INFO L168 Benchmark]: Boogie Preprocessor took 144.93 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 91.5 MB in the beginning and 178.5 MB in the end (delta: -87.0 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-08-22 02:20:45,588 INFO L168 Benchmark]: RCFGBuilder took 348.29 ms. Allocated memory is still 201.3 MB. Free memory was 178.5 MB in the beginning and 159.6 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. [2020-08-22 02:20:45,591 INFO L168 Benchmark]: TraceAbstraction took 1151.48 ms. Allocated memory is still 201.3 MB. Free memory was 159.6 MB in the beginning and 98.2 MB in the end (delta: 61.4 MB). Peak memory consumption was 61.4 MB. Max. memory is 7.1 GB. [2020-08-22 02:20:45,602 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 287.96 ms. Allocated memory is still 138.9 MB. Free memory was 102.4 MB in the beginning and 91.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 144.93 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 91.5 MB in the beginning and 178.5 MB in the end (delta: -87.0 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 348.29 ms. Allocated memory is still 201.3 MB. Free memory was 178.5 MB in the beginning and 159.6 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1151.48 ms. Allocated memory is still 201.3 MB. Free memory was 159.6 MB in the beginning and 98.2 MB in the end (delta: 61.4 MB). Peak memory consumption was 61.4 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