/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=0.5 --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 [2020-08-22 06:23:35,039 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 06:23:35,042 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 06:23:35,079 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 06:23:35,081 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 06:23:35,089 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 06:23:35,090 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 06:23:35,094 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 06:23:35,096 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 06:23:35,099 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 06:23:35,100 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 06:23:35,101 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 06:23:35,101 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 06:23:35,104 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 06:23:35,106 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 06:23:35,107 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 06:23:35,109 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 06:23:35,110 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 06:23:35,111 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 06:23:35,120 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 06:23:35,122 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 06:23:35,123 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 06:23:35,124 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 06:23:35,125 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 06:23:35,134 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 06:23:35,134 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 06:23:35,134 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 06:23:35,138 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 06:23:35,138 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 06:23:35,139 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 06:23:35,139 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 06:23:35,140 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 06:23:35,141 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 06:23:35,141 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 06:23:35,142 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 06:23:35,142 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 06:23:35,143 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 06:23:35,143 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 06:23:35,143 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 06:23:35,144 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 06:23:35,145 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 06:23:35,145 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 06:23:35,166 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 06:23:35,166 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 06:23:35,167 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 06:23:35,168 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 06:23:35,168 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 06:23:35,168 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 06:23:35,168 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 06:23:35,168 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 06:23:35,169 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 06:23:35,169 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 06:23:35,169 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 06:23:35,169 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 06:23:35,169 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 06:23:35,170 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 06:23:35,170 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 06:23:35,170 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 06:23:35,170 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 06:23:35,170 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 06:23:35,170 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 06:23:35,171 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 06:23:35,171 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 06:23:35,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 06:23:35,171 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 06:23:35,172 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 06:23:35,172 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 06:23:35,172 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 06:23:35,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 06:23:35,172 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 06:23:35,172 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 06:23:35,173 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=0.5;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=0.5;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=0.5;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=0.5;log-additional-information=true; [2020-08-22 06:23:35,491 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 06:23:35,510 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 06:23:35,515 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 06:23:35,517 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 06:23:35,517 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 06:23:35,518 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/indp1f.c [2020-08-22 06:23:35,587 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f1db8bc37/c531ede7b0444ceeac1fbf829094291f/FLAGc418bf161 [2020-08-22 06:23:36,012 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 06:23:36,012 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/indp1f.c [2020-08-22 06:23:36,019 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f1db8bc37/c531ede7b0444ceeac1fbf829094291f/FLAGc418bf161 [2020-08-22 06:23:36,440 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f1db8bc37/c531ede7b0444ceeac1fbf829094291f [2020-08-22 06:23:36,448 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 06:23:36,449 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 06:23:36,450 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 06:23:36,450 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 06:23:36,454 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 06:23:36,454 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:23:36" (1/1) ... [2020-08-22 06:23:36,457 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14fb4a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:23:36, skipping insertion in model container [2020-08-22 06:23:36,457 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:23:36" (1/1) ... [2020-08-22 06:23:36,465 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 06:23:36,482 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 06:23:36,644 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:23:36,654 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 06:23:36,673 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:23:36,688 INFO L208 MainTranslator]: Completed translation [2020-08-22 06:23:36,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:23:36 WrapperNode [2020-08-22 06:23:36,688 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 06:23:36,689 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 06:23:36,689 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 06:23:36,689 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 06:23:36,774 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:23:36" (1/1) ... [2020-08-22 06:23:36,774 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:23:36" (1/1) ... [2020-08-22 06:23:36,782 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:23:36" (1/1) ... [2020-08-22 06:23:36,782 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:23:36" (1/1) ... [2020-08-22 06:23:36,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:23:36" (1/1) ... [2020-08-22 06:23:36,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:23:36" (1/1) ... [2020-08-22 06:23:36,796 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:23:36" (1/1) ... [2020-08-22 06:23:36,798 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 06:23:36,798 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 06:23:36,798 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 06:23:36,799 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 06:23:36,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:23:36" (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 06:23:36,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 06:23:36,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 06:23:36,855 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 06:23:36,855 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 06:23:36,856 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 06:23:36,856 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 06:23:36,856 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 06:23:36,856 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 06:23:36,856 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 06:23:36,856 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 06:23:36,857 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 06:23:36,857 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 06:23:36,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 06:23:36,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 06:23:36,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 06:23:36,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 06:23:36,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 06:23:36,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 06:23:37,087 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 06:23:37,087 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-22 06:23:37,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:23:37 BoogieIcfgContainer [2020-08-22 06:23:37,091 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 06:23:37,092 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 06:23:37,093 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 06:23:37,096 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 06:23:37,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:23:36" (1/3) ... [2020-08-22 06:23:37,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c0a9c45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:23:37, skipping insertion in model container [2020-08-22 06:23:37,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:23:36" (2/3) ... [2020-08-22 06:23:37,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c0a9c45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:23:37, skipping insertion in model container [2020-08-22 06:23:37,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:23:37" (3/3) ... [2020-08-22 06:23:37,099 INFO L109 eAbstractionObserver]: Analyzing ICFG indp1f.c [2020-08-22 06:23:37,110 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 06:23:37,117 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 06:23:37,134 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 06:23:37,181 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 06:23:37,181 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 06:23:37,181 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 06:23:37,181 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 06:23:37,181 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 06:23:37,182 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 06:23:37,185 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 06:23:37,185 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 06:23:37,216 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-08-22 06:23:37,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-22 06:23:37,224 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:23:37,225 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] [2020-08-22 06:23:37,225 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:23:37,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:23:37,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1155719453, now seen corresponding path program 1 times [2020-08-22 06:23:37,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:23:37,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2094489456] [2020-08-22 06:23:37,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:23:37,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:23:37,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:23:37,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:23:37,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 06:23:37,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:23:37,506 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 06:23:37,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2094489456] [2020-08-22 06:23:37,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:23:37,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 06:23:37,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801513545] [2020-08-22 06:23:37,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 06:23:37,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:23:37,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 06:23:37,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 06:23:37,533 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-08-22 06:23:37,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:23:37,695 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2020-08-22 06:23:37,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 06:23:37,697 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-08-22 06:23:37,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:23:37,713 INFO L225 Difference]: With dead ends: 64 [2020-08-22 06:23:37,713 INFO L226 Difference]: Without dead ends: 32 [2020-08-22 06:23:37,723 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 06:23:37,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-08-22 06:23:37,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-08-22 06:23:37,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-08-22 06:23:37,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-08-22 06:23:37,761 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 24 [2020-08-22 06:23:37,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:23:37,761 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-08-22 06:23:37,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 06:23:37,761 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-08-22 06:23:37,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-22 06:23:37,763 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:23:37,763 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] [2020-08-22 06:23:37,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 06:23:37,764 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:23:37,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:23:37,764 INFO L82 PathProgramCache]: Analyzing trace with hash -124144225, now seen corresponding path program 1 times [2020-08-22 06:23:37,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:23:37,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [131343398] [2020-08-22 06:23:37,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:23:37,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:23:37,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:23:37,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:23:37,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 06:23:37,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:23:37,894 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 06:23:37,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [131343398] [2020-08-22 06:23:37,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:23:37,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 06:23:37,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586230212] [2020-08-22 06:23:37,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 06:23:37,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:23:37,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 06:23:37,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 06:23:37,902 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 5 states. [2020-08-22 06:23:38,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:23:38,063 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2020-08-22 06:23:38,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 06:23:38,064 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-08-22 06:23:38,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:23:38,067 INFO L225 Difference]: With dead ends: 59 [2020-08-22 06:23:38,067 INFO L226 Difference]: Without dead ends: 42 [2020-08-22 06:23:38,068 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 06:23:38,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-08-22 06:23:38,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 35. [2020-08-22 06:23:38,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-08-22 06:23:38,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2020-08-22 06:23:38,082 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 24 [2020-08-22 06:23:38,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:23:38,083 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2020-08-22 06:23:38,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 06:23:38,083 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2020-08-22 06:23:38,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-22 06:23:38,085 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:23:38,085 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 06:23:38,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 06:23:38,086 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:23:38,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:23:38,087 INFO L82 PathProgramCache]: Analyzing trace with hash -191015719, now seen corresponding path program 1 times [2020-08-22 06:23:38,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:23:38,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1773892475] [2020-08-22 06:23:38,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:23:38,116 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-22 06:23:38,117 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-08-22 06:23:38,117 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 06:23:38,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 06:23:38,145 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-22 06:23:38,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:23:38 BoogieIcfgContainer [2020-08-22 06:23:38,146 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 06:23:38,149 INFO L168 Benchmark]: Toolchain (without parser) took 1698.61 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 104.5 MB in the beginning and 106.2 MB in the end (delta: -1.7 MB). Peak memory consumption was 60.7 MB. Max. memory is 7.1 GB. [2020-08-22 06:23:38,150 INFO L168 Benchmark]: CDTParser took 0.78 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-22 06:23:38,152 INFO L168 Benchmark]: CACSL2BoogieTranslator took 238.48 ms. Allocated memory is still 141.0 MB. Free memory was 104.3 MB in the beginning and 94.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-08-22 06:23:38,153 INFO L168 Benchmark]: Boogie Preprocessor took 109.13 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 94.0 MB in the beginning and 181.2 MB in the end (delta: -87.2 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-08-22 06:23:38,154 INFO L168 Benchmark]: RCFGBuilder took 292.98 ms. Allocated memory is still 203.4 MB. Free memory was 181.2 MB in the beginning and 163.6 MB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 7.1 GB. [2020-08-22 06:23:38,155 INFO L168 Benchmark]: TraceAbstraction took 1053.67 ms. Allocated memory is still 203.4 MB. Free memory was 163.6 MB in the beginning and 106.2 MB in the end (delta: 57.4 MB). Peak memory consumption was 57.4 MB. Max. memory is 7.1 GB. [2020-08-22 06:23:38,159 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.78 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 238.48 ms. Allocated memory is still 141.0 MB. Free memory was 104.3 MB in the beginning and 94.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 109.13 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 94.0 MB in the beginning and 181.2 MB in the end (delta: -87.2 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 292.98 ms. Allocated memory is still 203.4 MB. Free memory was 181.2 MB in the beginning and 163.6 MB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1053.67 ms. Allocated memory is still 203.4 MB. Free memory was 163.6 MB in the beginning and 106.2 MB in the end (delta: 57.4 MB). Peak memory consumption was 57.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long *a = malloc(sizeof(long long)*N); [L28] i=0 [L28] COND TRUE i