/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=SHALLOWEST --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/indp1f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 19:52:09,715 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 19:52:09,718 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 19:52:09,759 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 19:52:09,760 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 19:52:09,772 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 19:52:09,775 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 19:52:09,778 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 19:52:09,782 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 19:52:09,783 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 19:52:09,785 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 19:52:09,788 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 19:52:09,788 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 19:52:09,793 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 19:52:09,796 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 19:52:09,798 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 19:52:09,799 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 19:52:09,801 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 19:52:09,803 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 19:52:09,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 19:52:09,812 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 19:52:09,814 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 19:52:09,815 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 19:52:09,816 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 19:52:09,821 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 19:52:09,821 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 19:52:09,822 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 19:52:09,825 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 19:52:09,825 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 19:52:09,827 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 19:52:09,828 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 19:52:09,828 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 19:52:09,829 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 19:52:09,830 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 19:52:09,832 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 19:52:09,832 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 19:52:09,833 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 19:52:09,833 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 19:52:09,833 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 19:52:09,834 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 19:52:09,836 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 19:52:09,836 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 [2020-08-21 19:52:09,886 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 19:52:09,886 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 19:52:09,889 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 19:52:09,889 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 19:52:09,890 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 19:52:09,890 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 19:52:09,890 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 19:52:09,890 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 19:52:09,891 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 19:52:09,891 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 19:52:09,892 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 19:52:09,892 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 19:52:09,893 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 19:52:09,893 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 19:52:09,893 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 19:52:09,893 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 19:52:09,894 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 19:52:09,894 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 19:52:09,894 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 19:52:09,894 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 19:52:09,894 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 19:52:09,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 19:52:09,895 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 19:52:09,895 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 19:52:09,895 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 19:52:09,895 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 19:52:09,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 19:52:09,896 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 19:52:09,896 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 19:52:09,896 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=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; [2020-08-21 19:52:10,236 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 19:52:10,251 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 19:52:10,257 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 19:52:10,259 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 19:52:10,259 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 19:52:10,260 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/indp1f.c [2020-08-21 19:52:10,336 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/879ad8403/181a9802395744febc8300924b73059f/FLAGb61c44261 [2020-08-21 19:52:10,818 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 19:52:10,819 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/indp1f.c [2020-08-21 19:52:10,826 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/879ad8403/181a9802395744febc8300924b73059f/FLAGb61c44261 [2020-08-21 19:52:11,185 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/879ad8403/181a9802395744febc8300924b73059f [2020-08-21 19:52:11,196 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 19:52:11,198 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 19:52:11,202 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 19:52:11,202 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 19:52:11,206 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 19:52:11,207 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 07:52:11" (1/1) ... [2020-08-21 19:52:11,211 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44406637 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:52:11, skipping insertion in model container [2020-08-21 19:52:11,211 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 07:52:11" (1/1) ... [2020-08-21 19:52:11,220 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 19:52:11,240 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 19:52:11,411 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 19:52:11,420 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 19:52:11,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 19:52:11,534 INFO L208 MainTranslator]: Completed translation [2020-08-21 19:52:11,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:52:11 WrapperNode [2020-08-21 19:52:11,534 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 19:52:11,535 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 19:52:11,535 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 19:52:11,536 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 19:52:11,550 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:52:11" (1/1) ... [2020-08-21 19:52:11,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:52:11" (1/1) ... [2020-08-21 19:52:11,558 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:52:11" (1/1) ... [2020-08-21 19:52:11,559 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:52:11" (1/1) ... [2020-08-21 19:52:11,567 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:52:11" (1/1) ... [2020-08-21 19:52:11,577 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:52:11" (1/1) ... [2020-08-21 19:52:11,581 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:52:11" (1/1) ... [2020-08-21 19:52:11,583 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 19:52:11,587 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 19:52:11,587 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 19:52:11,587 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 19:52:11,588 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:52:11" (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 [2020-08-21 19:52:11,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 19:52:11,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 19:52:11,656 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 19:52:11,656 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-21 19:52:11,657 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 19:52:11,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 19:52:11,657 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 19:52:11,657 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 19:52:11,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 19:52:11,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 19:52:11,658 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 19:52:11,658 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 19:52:11,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 19:52:11,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 19:52:11,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 19:52:11,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 19:52:11,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 19:52:11,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 19:52:11,984 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 19:52:11,984 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-21 19:52:11,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:52:11 BoogieIcfgContainer [2020-08-21 19:52:11,989 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 19:52:11,990 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 19:52:11,990 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 19:52:11,994 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 19:52:11,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 07:52:11" (1/3) ... [2020-08-21 19:52:11,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d172b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:52:11, skipping insertion in model container [2020-08-21 19:52:11,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:52:11" (2/3) ... [2020-08-21 19:52:11,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d172b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:52:11, skipping insertion in model container [2020-08-21 19:52:11,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:52:11" (3/3) ... [2020-08-21 19:52:11,997 INFO L109 eAbstractionObserver]: Analyzing ICFG indp1f.c [2020-08-21 19:52:12,006 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 19:52:12,013 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 19:52:12,028 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 19:52:12,049 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 19:52:12,049 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 19:52:12,050 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 19:52:12,050 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 19:52:12,050 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 19:52:12,050 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 19:52:12,051 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 19:52:12,051 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 19:52:12,069 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-08-21 19:52:12,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-21 19:52:12,075 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:52:12,076 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] [2020-08-21 19:52:12,076 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:52:12,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:52:12,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1155719453, now seen corresponding path program 1 times [2020-08-21 19:52:12,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:52:12,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2024994111] [2020-08-21 19:52:12,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:52:12,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:52:12,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:52:12,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:52:12,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 19:52:12,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:52:12,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:52:12,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2024994111] [2020-08-21 19:52:12,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:52:12,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 19:52:12,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615060090] [2020-08-21 19:52:12,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 19:52:12,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:52:12,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 19:52:12,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 19:52:12,324 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-08-21 19:52:12,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:52:12,434 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2020-08-21 19:52:12,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 19:52:12,437 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-08-21 19:52:12,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:52:12,446 INFO L225 Difference]: With dead ends: 64 [2020-08-21 19:52:12,446 INFO L226 Difference]: Without dead ends: 32 [2020-08-21 19:52:12,449 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 [2020-08-21 19:52:12,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-08-21 19:52:12,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-08-21 19:52:12,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-08-21 19:52:12,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-08-21 19:52:12,488 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 24 [2020-08-21 19:52:12,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:52:12,489 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-08-21 19:52:12,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 19:52:12,490 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-08-21 19:52:12,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-21 19:52:12,491 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:52:12,491 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] [2020-08-21 19:52:12,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 19:52:12,492 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:52:12,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:52:12,492 INFO L82 PathProgramCache]: Analyzing trace with hash -124144225, now seen corresponding path program 1 times [2020-08-21 19:52:12,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:52:12,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66382922] [2020-08-21 19:52:12,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:52:12,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:52:12,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:52:12,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:52:12,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 19:52:12,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:52:12,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:52:12,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66382922] [2020-08-21 19:52:12,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:52:12,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 19:52:12,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562570698] [2020-08-21 19:52:12,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 19:52:12,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:52:12,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 19:52:12,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 19:52:12,637 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 5 states. [2020-08-21 19:52:12,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:52:12,794 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2020-08-21 19:52:12,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 19:52:12,795 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-08-21 19:52:12,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:52:12,798 INFO L225 Difference]: With dead ends: 59 [2020-08-21 19:52:12,799 INFO L226 Difference]: Without dead ends: 42 [2020-08-21 19:52:12,800 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 [2020-08-21 19:52:12,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-08-21 19:52:12,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 35. [2020-08-21 19:52:12,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-08-21 19:52:12,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2020-08-21 19:52:12,815 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 24 [2020-08-21 19:52:12,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:52:12,816 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2020-08-21 19:52:12,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 19:52:12,819 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2020-08-21 19:52:12,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-21 19:52:12,820 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:52:12,821 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] [2020-08-21 19:52:12,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 19:52:12,824 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:52:12,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:52:12,825 INFO L82 PathProgramCache]: Analyzing trace with hash -191015719, now seen corresponding path program 1 times [2020-08-21 19:52:12,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:52:12,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835685421] [2020-08-21 19:52:12,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:52:12,849 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-21 19:52:12,850 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-08-21 19:52:12,850 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 19:52:12,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 19:52:12,874 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-21 19:52:12,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 07:52:12 BoogieIcfgContainer [2020-08-21 19:52:12,875 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 19:52:12,878 INFO L168 Benchmark]: Toolchain (without parser) took 1679.13 ms. Allocated memory was 140.5 MB in the beginning and 201.9 MB in the end (delta: 61.3 MB). Free memory was 104.0 MB in the beginning and 103.9 MB in the end (delta: 102.8 kB). Peak memory consumption was 61.4 MB. Max. memory is 7.1 GB. [2020-08-21 19:52:12,879 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 19:52:12,880 INFO L168 Benchmark]: CACSL2BoogieTranslator took 332.94 ms. Allocated memory was 140.5 MB in the beginning and 201.9 MB in the end (delta: 61.3 MB). Free memory was 103.8 MB in the beginning and 180.9 MB in the end (delta: -77.2 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-08-21 19:52:12,881 INFO L168 Benchmark]: Boogie Preprocessor took 48.38 ms. Allocated memory is still 201.9 MB. Free memory was 180.9 MB in the beginning and 178.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-08-21 19:52:12,882 INFO L168 Benchmark]: RCFGBuilder took 402.01 ms. Allocated memory is still 201.9 MB. Free memory was 178.6 MB in the beginning and 161.1 MB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 7.1 GB. [2020-08-21 19:52:12,888 INFO L168 Benchmark]: TraceAbstraction took 884.98 ms. Allocated memory is still 201.9 MB. Free memory was 161.1 MB in the beginning and 103.9 MB in the end (delta: 57.2 MB). Peak memory consumption was 57.2 MB. Max. memory is 7.1 GB. [2020-08-21 19:52:12,892 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 332.94 ms. Allocated memory was 140.5 MB in the beginning and 201.9 MB in the end (delta: 61.3 MB). Free memory was 103.8 MB in the beginning and 180.9 MB in the end (delta: -77.2 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 48.38 ms. Allocated memory is still 201.9 MB. Free memory was 180.9 MB in the beginning and 178.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 402.01 ms. Allocated memory is still 201.9 MB. Free memory was 178.6 MB in the beginning and 161.1 MB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 884.98 ms. Allocated memory is still 201.9 MB. Free memory was 161.1 MB in the beginning and 103.9 MB in the end (delta: 57.2 MB). Peak memory consumption was 57.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long *a = malloc(sizeof(long long)*N); [L28] i=0 [L28] COND TRUE i