/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --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/ss2f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 03:09:34,586 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 03:09:34,590 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 03:09:34,629 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 03:09:34,630 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 03:09:34,639 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 03:09:34,641 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 03:09:34,645 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 03:09:34,647 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 03:09:34,650 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 03:09:34,651 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 03:09:34,652 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 03:09:34,652 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 03:09:34,655 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 03:09:34,657 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 03:09:34,659 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 03:09:34,660 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 03:09:34,661 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 03:09:34,663 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 03:09:34,671 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 03:09:34,673 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 03:09:34,674 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 03:09:34,675 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 03:09:34,676 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 03:09:34,679 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 03:09:34,679 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 03:09:34,679 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 03:09:34,680 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 03:09:34,680 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 03:09:34,687 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 03:09:34,687 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 03:09:34,688 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 03:09:34,688 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 03:09:34,689 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 03:09:34,689 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 03:09:34,690 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 03:09:34,690 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 03:09:34,690 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 03:09:34,690 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 03:09:34,695 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 03:09:34,696 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 03:09:34,697 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 03:09:34,734 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 03:09:34,735 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 03:09:34,737 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 03:09:34,737 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 03:09:34,738 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 03:09:34,738 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 03:09:34,738 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 03:09:34,738 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 03:09:34,739 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 03:09:34,739 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 03:09:34,740 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 03:09:34,740 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 03:09:34,740 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 03:09:34,741 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 03:09:34,741 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 03:09:34,741 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 03:09:34,741 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 03:09:34,742 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 03:09:34,742 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 03:09:34,742 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 03:09:34,742 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 03:09:34,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 03:09:34,743 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 03:09:34,743 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 03:09:34,743 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 03:09:34,743 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 03:09:34,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 03:09:34,744 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 03:09:34,744 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 03:09:34,744 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-08-22 03:09:35,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 03:09:35,090 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 03:09:35,096 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 03:09:35,098 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 03:09:35,101 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 03:09:35,101 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ss2f.c [2020-08-22 03:09:35,165 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/91838f669/f73519745f144327b017449302b6cbd6/FLAG6e480e8a3 [2020-08-22 03:09:35,627 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 03:09:35,628 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ss2f.c [2020-08-22 03:09:35,637 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/91838f669/f73519745f144327b017449302b6cbd6/FLAG6e480e8a3 [2020-08-22 03:09:35,932 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/91838f669/f73519745f144327b017449302b6cbd6 [2020-08-22 03:09:35,944 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 03:09:35,946 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 03:09:35,949 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 03:09:35,950 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 03:09:35,953 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 03:09:35,954 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:09:35" (1/1) ... [2020-08-22 03:09:35,958 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ea71ca3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:09:35, skipping insertion in model container [2020-08-22 03:09:35,958 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:09:35" (1/1) ... [2020-08-22 03:09:35,967 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 03:09:35,991 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 03:09:36,173 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:09:36,181 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 03:09:36,206 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:09:36,222 INFO L208 MainTranslator]: Completed translation [2020-08-22 03:09:36,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:09:36 WrapperNode [2020-08-22 03:09:36,223 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 03:09:36,223 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 03:09:36,223 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 03:09:36,224 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 03:09:36,319 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:09:36" (1/1) ... [2020-08-22 03:09:36,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:09:36" (1/1) ... [2020-08-22 03:09:36,329 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:09:36" (1/1) ... [2020-08-22 03:09:36,329 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:09:36" (1/1) ... [2020-08-22 03:09:36,345 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:09:36" (1/1) ... [2020-08-22 03:09:36,354 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:09:36" (1/1) ... [2020-08-22 03:09:36,356 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:09:36" (1/1) ... [2020-08-22 03:09:36,358 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 03:09:36,359 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 03:09:36,359 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 03:09:36,359 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 03:09:36,360 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:09:36" (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 03:09:36,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 03:09:36,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 03:09:36,417 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 03:09:36,417 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 03:09:36,417 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 03:09:36,417 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 03:09:36,418 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 03:09:36,418 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 03:09:36,418 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 03:09:36,418 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 03:09:36,418 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 03:09:36,418 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 03:09:36,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 03:09:36,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 03:09:36,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 03:09:36,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 03:09:36,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 03:09:36,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 03:09:36,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 03:09:36,780 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 03:09:36,780 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-08-22 03:09:36,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:09:36 BoogieIcfgContainer [2020-08-22 03:09:36,791 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 03:09:36,792 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 03:09:36,793 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 03:09:36,798 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 03:09:36,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 03:09:35" (1/3) ... [2020-08-22 03:09:36,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@202584c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:09:36, skipping insertion in model container [2020-08-22 03:09:36,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:09:36" (2/3) ... [2020-08-22 03:09:36,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@202584c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:09:36, skipping insertion in model container [2020-08-22 03:09:36,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:09:36" (3/3) ... [2020-08-22 03:09:36,805 INFO L109 eAbstractionObserver]: Analyzing ICFG ss2f.c [2020-08-22 03:09:36,814 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 03:09:36,820 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 03:09:36,832 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 03:09:36,856 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 03:09:36,857 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 03:09:36,857 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 03:09:36,857 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 03:09:36,857 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 03:09:36,857 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 03:09:36,857 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 03:09:36,858 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 03:09:36,877 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-08-22 03:09:36,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-22 03:09:36,884 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:09:36,886 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] [2020-08-22 03:09:36,886 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:09:36,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:09:36,892 INFO L82 PathProgramCache]: Analyzing trace with hash -96589013, now seen corresponding path program 1 times [2020-08-22 03:09:36,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:09:36,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1627694997] [2020-08-22 03:09:36,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:09:37,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:09:37,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:09:37,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:09:37,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 03:09:37,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:09:37,102 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 03:09:37,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1627694997] [2020-08-22 03:09:37,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:09:37,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 03:09:37,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414662639] [2020-08-22 03:09:37,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 03:09:37,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:09:37,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 03:09:37,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 03:09:37,128 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2020-08-22 03:09:37,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:09:37,305 INFO L93 Difference]: Finished difference Result 82 states and 113 transitions. [2020-08-22 03:09:37,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 03:09:37,307 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-08-22 03:09:37,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:09:37,317 INFO L225 Difference]: With dead ends: 82 [2020-08-22 03:09:37,318 INFO L226 Difference]: Without dead ends: 41 [2020-08-22 03:09:37,321 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 03:09:37,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-08-22 03:09:37,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-08-22 03:09:37,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-08-22 03:09:37,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2020-08-22 03:09:37,368 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 30 [2020-08-22 03:09:37,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:09:37,369 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2020-08-22 03:09:37,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 03:09:37,369 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2020-08-22 03:09:37,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-22 03:09:37,371 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:09:37,371 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] [2020-08-22 03:09:37,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 03:09:37,372 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:09:37,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:09:37,373 INFO L82 PathProgramCache]: Analyzing trace with hash -552343525, now seen corresponding path program 1 times [2020-08-22 03:09:37,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:09:37,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [953048050] [2020-08-22 03:09:37,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:09:37,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:09:37,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:09:37,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:09:37,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 03:09:37,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:09:37,489 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 03:09:37,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [953048050] [2020-08-22 03:09:37,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:09:37,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:09:37,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831101276] [2020-08-22 03:09:37,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:09:37,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:09:37,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:09:37,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:09:37,493 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 5 states. [2020-08-22 03:09:37,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:09:37,721 INFO L93 Difference]: Finished difference Result 83 states and 101 transitions. [2020-08-22 03:09:37,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 03:09:37,722 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-08-22 03:09:37,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:09:37,737 INFO L225 Difference]: With dead ends: 83 [2020-08-22 03:09:37,737 INFO L226 Difference]: Without dead ends: 57 [2020-08-22 03:09:37,738 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 03:09:37,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-08-22 03:09:37,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 47. [2020-08-22 03:09:37,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-08-22 03:09:37,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2020-08-22 03:09:37,766 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 30 [2020-08-22 03:09:37,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:09:37,766 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2020-08-22 03:09:37,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:09:37,766 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2020-08-22 03:09:37,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-08-22 03:09:37,768 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:09:37,768 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] [2020-08-22 03:09:37,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 03:09:37,769 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:09:37,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:09:37,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1488976591, now seen corresponding path program 1 times [2020-08-22 03:09:37,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:09:37,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [743551697] [2020-08-22 03:09:37,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:09:37,811 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-22 03:09:37,811 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-08-22 03:09:37,812 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 03:09:37,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 03:09:37,836 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-22 03:09:37,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 03:09:37 BoogieIcfgContainer [2020-08-22 03:09:37,837 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 03:09:37,840 INFO L168 Benchmark]: Toolchain (without parser) took 1893.25 ms. Allocated memory was 143.1 MB in the beginning and 231.7 MB in the end (delta: 88.6 MB). Free memory was 106.1 MB in the beginning and 196.7 MB in the end (delta: -90.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 03:09:37,841 INFO L168 Benchmark]: CDTParser took 0.75 ms. Allocated memory is still 143.1 MB. Free memory was 124.6 MB in the beginning and 124.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 03:09:37,842 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.72 ms. Allocated memory is still 143.1 MB. Free memory was 105.7 MB in the beginning and 94.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-08-22 03:09:37,843 INFO L168 Benchmark]: Boogie Preprocessor took 135.07 ms. Allocated memory was 143.1 MB in the beginning and 206.0 MB in the end (delta: 62.9 MB). Free memory was 94.8 MB in the beginning and 183.6 MB in the end (delta: -88.8 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-08-22 03:09:37,844 INFO L168 Benchmark]: RCFGBuilder took 432.59 ms. Allocated memory is still 206.0 MB. Free memory was 183.0 MB in the beginning and 162.7 MB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2020-08-22 03:09:37,844 INFO L168 Benchmark]: TraceAbstraction took 1044.33 ms. Allocated memory was 206.0 MB in the beginning and 231.7 MB in the end (delta: 25.7 MB). Free memory was 162.1 MB in the beginning and 196.7 MB in the end (delta: -34.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 03:09:37,849 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.75 ms. Allocated memory is still 143.1 MB. Free memory was 124.6 MB in the beginning and 124.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 273.72 ms. Allocated memory is still 143.1 MB. Free memory was 105.7 MB in the beginning and 94.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 135.07 ms. Allocated memory was 143.1 MB in the beginning and 206.0 MB in the end (delta: 62.9 MB). Free memory was 94.8 MB in the beginning and 183.6 MB in the end (delta: -88.8 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 432.59 ms. Allocated memory is still 206.0 MB. Free memory was 183.0 MB in the beginning and 162.7 MB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1044.33 ms. Allocated memory was 206.0 MB in the beginning and 231.7 MB in the end (delta: 25.7 MB). Free memory was 162.1 MB in the beginning and 196.7 MB in the end (delta: -34.6 MB). There was no memory consumed. 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