/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 --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --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/modnf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:41:06,589 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:41:06,593 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:41:06,639 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:41:06,639 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:41:06,640 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:41:06,642 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:41:06,644 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:41:06,646 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:41:06,647 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:41:06,648 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:41:06,649 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:41:06,649 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:41:06,650 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:41:06,652 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:41:06,653 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:41:06,654 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:41:06,655 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:41:06,659 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:41:06,661 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:41:06,663 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:41:06,665 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:41:06,666 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:41:06,667 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:41:06,670 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:41:06,670 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:41:06,670 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:41:06,671 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:41:06,672 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:41:06,673 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:41:06,673 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:41:06,674 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:41:06,675 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:41:06,676 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:41:06,677 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:41:06,677 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:41:06,678 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:41:06,679 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:41:06,679 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:41:06,680 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:41:06,681 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:41:06,682 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 [2020-09-24 20:41:06,707 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:41:06,708 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:41:06,709 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:41:06,709 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:41:06,710 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:41:06,710 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:41:06,710 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:41:06,710 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:41:06,711 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:41:06,711 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:41:06,711 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:41:06,711 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:41:06,711 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:41:06,712 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:41:06,712 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:41:06,712 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:41:06,712 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:41:06,713 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:41:06,713 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:41:06,713 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:41:06,713 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:41:06,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:41:06,714 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:41:06,714 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:41:06,714 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:41:06,714 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:41:06,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:41:06,715 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:41:06,715 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:41:06,715 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.rcfgbuilder: Size of a code block -> SingleStatement 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 -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; [2020-09-24 20:41:07,171 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:41:07,199 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:41:07,206 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:41:07,209 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:41:07,211 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:41:07,212 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/modnf.c [2020-09-24 20:41:07,299 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bcc8541e4/fb77c5b7e0e948f3b5adf6077eb75705/FLAG6a998add8 [2020-09-24 20:41:07,873 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:41:07,874 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/modnf.c [2020-09-24 20:41:07,883 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bcc8541e4/fb77c5b7e0e948f3b5adf6077eb75705/FLAG6a998add8 [2020-09-24 20:41:08,219 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bcc8541e4/fb77c5b7e0e948f3b5adf6077eb75705 [2020-09-24 20:41:08,235 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:41:08,241 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:41:08,242 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:41:08,242 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:41:08,247 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:41:08,248 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:41:08" (1/1) ... [2020-09-24 20:41:08,253 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72eb96f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:08, skipping insertion in model container [2020-09-24 20:41:08,253 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:41:08" (1/1) ... [2020-09-24 20:41:08,262 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:41:08,290 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:41:08,531 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:41:08,542 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:41:08,567 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:41:08,586 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:41:08,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:08 WrapperNode [2020-09-24 20:41:08,587 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:41:08,588 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:41:08,588 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:41:08,588 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:41:08,690 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:08" (1/1) ... [2020-09-24 20:41:08,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:08" (1/1) ... [2020-09-24 20:41:08,701 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:08" (1/1) ... [2020-09-24 20:41:08,702 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:08" (1/1) ... [2020-09-24 20:41:08,711 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:08" (1/1) ... [2020-09-24 20:41:08,718 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:08" (1/1) ... [2020-09-24 20:41:08,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:08" (1/1) ... [2020-09-24 20:41:08,729 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:41:08,730 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:41:08,730 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:41:08,730 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:41:08,731 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:08" (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 [2020-09-24 20:41:08,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:41:08,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:41:08,811 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 20:41:08,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 20:41:08,811 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:41:08,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:41:08,812 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 20:41:08,812 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 20:41:08,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 20:41:08,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:41:08,813 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 20:41:08,813 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:41:08,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 20:41:08,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 20:41:08,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 20:41:08,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 20:41:08,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 20:41:08,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:41:08,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:41:09,171 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:41:09,171 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-24 20:41:09,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:41:09 BoogieIcfgContainer [2020-09-24 20:41:09,177 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:41:09,178 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:41:09,178 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:41:09,182 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:41:09,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:41:08" (1/3) ... [2020-09-24 20:41:09,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aa22f33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:41:09, skipping insertion in model container [2020-09-24 20:41:09,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:08" (2/3) ... [2020-09-24 20:41:09,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aa22f33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:41:09, skipping insertion in model container [2020-09-24 20:41:09,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:41:09" (3/3) ... [2020-09-24 20:41:09,187 INFO L109 eAbstractionObserver]: Analyzing ICFG modnf.c [2020-09-24 20:41:09,198 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:41:09,208 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:41:09,229 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:41:09,257 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:41:09,257 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:41:09,257 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:41:09,257 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:41:09,257 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:41:09,257 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:41:09,257 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:41:09,257 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:41:09,280 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-09-24 20:41:09,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 20:41:09,288 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:41:09,289 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] [2020-09-24 20:41:09,290 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:41:09,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:41:09,296 INFO L82 PathProgramCache]: Analyzing trace with hash 864246722, now seen corresponding path program 1 times [2020-09-24 20:41:09,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:41:09,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324591215] [2020-09-24 20:41:09,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:41:09,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:41:09,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:09,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:09,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:10,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:41:10,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 20:41:10,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:41:10,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 705 [2020-09-24 20:41:10,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:41:10,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:41:10,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-24 20:41:10,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:41:10,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 20:41:10,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:41:10,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:41:10,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:10,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:41:10,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:41:10,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:41:10,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 20:41:10,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:41:10,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:41:10,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:41:10,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:41:10,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 20:41:10,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:41:10,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:41:10,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:41:10,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:41:10,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 20:41:10,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:41:10,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 20:41:10,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:41:10,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:41:10,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:41:10,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:41:10,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 20:41:10,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:41:10,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324591215] [2020-09-24 20:41:10,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:41:10,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 20:41:10,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414596553] [2020-09-24 20:41:10,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 20:41:10,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:41:10,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 20:41:10,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:41:10,461 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 6 states. [2020-09-24 20:41:10,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:41:10,904 INFO L93 Difference]: Finished difference Result 136 states and 162 transitions. [2020-09-24 20:41:10,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 20:41:10,906 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-09-24 20:41:10,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:41:10,921 INFO L225 Difference]: With dead ends: 136 [2020-09-24 20:41:10,921 INFO L226 Difference]: Without dead ends: 70 [2020-09-24 20:41:10,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:41:10,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-24 20:41:10,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 54. [2020-09-24 20:41:10,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-24 20:41:10,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2020-09-24 20:41:10,990 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 33 [2020-09-24 20:41:10,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:41:10,991 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2020-09-24 20:41:10,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 20:41:10,991 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2020-09-24 20:41:10,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-24 20:41:10,993 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:41:10,993 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:41:10,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:41:10,994 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:41:10,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:41:10,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1661969402, now seen corresponding path program 1 times [2020-09-24 20:41:10,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:41:10,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1671340411] [2020-09-24 20:41:10,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:41:11,017 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-24 20:41:11,020 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-09-24 20:41:11,020 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 20:41:11,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:41:11,057 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-24 20:41:11,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 08:41:11 BoogieIcfgContainer [2020-09-24 20:41:11,058 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 20:41:11,063 INFO L168 Benchmark]: Toolchain (without parser) took 2824.27 ms. Allocated memory was 140.0 MB in the beginning and 237.0 MB in the end (delta: 97.0 MB). Free memory was 102.7 MB in the beginning and 187.1 MB in the end (delta: -84.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-09-24 20:41:11,066 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-24 20:41:11,067 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.40 ms. Allocated memory is still 140.0 MB. Free memory was 102.0 MB in the beginning and 91.7 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-09-24 20:41:11,068 INFO L168 Benchmark]: Boogie Preprocessor took 141.39 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 91.7 MB in the beginning and 180.7 MB in the end (delta: -89.0 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-09-24 20:41:11,069 INFO L168 Benchmark]: RCFGBuilder took 447.46 ms. Allocated memory is still 203.4 MB. Free memory was 180.7 MB in the beginning and 162.5 MB in the end (delta: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 7.1 GB. [2020-09-24 20:41:11,071 INFO L168 Benchmark]: TraceAbstraction took 1880.15 ms. Allocated memory was 203.4 MB in the beginning and 237.0 MB in the end (delta: 33.6 MB). Free memory was 161.8 MB in the beginning and 187.1 MB in the end (delta: -25.3 MB). Peak memory consumption was 8.3 MB. Max. memory is 7.1 GB. [2020-09-24 20:41:11,081 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 345.40 ms. Allocated memory is still 140.0 MB. Free memory was 102.0 MB in the beginning and 91.7 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 141.39 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 91.7 MB in the beginning and 180.7 MB in the end (delta: -89.0 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 447.46 ms. Allocated memory is still 203.4 MB. Free memory was 180.7 MB in the beginning and 162.5 MB in the end (delta: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1880.15 ms. Allocated memory was 203.4 MB in the beginning and 237.0 MB in the end (delta: 33.6 MB). Free memory was 161.8 MB in the beginning and 187.1 MB in the end (delta: -25.3 MB). Peak memory consumption was 8.3 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] int sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] sum[0] = 0 [L30] i=0 [L30] COND TRUE i