/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/s5liff.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 10:28:34,124 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:28:34,128 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:28:34,171 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:28:34,172 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:28:34,179 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:28:34,183 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:28:34,186 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:28:34,189 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:28:34,193 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:28:34,194 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:28:34,195 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:28:34,196 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:28:34,198 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:28:34,201 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:28:34,203 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:28:34,205 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:28:34,206 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:28:34,207 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:28:34,216 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:28:34,218 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:28:34,219 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:28:34,220 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:28:34,221 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:28:34,233 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-21 10:28:34,244 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 10:28:34,247 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 10:28:34,249 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 10:28:34,250 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 10:28:34,251 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 10:28:34,251 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 10:28:34,252 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 10:28:34,252 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 10:28:34,252 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:28:34,254 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:28:34,255 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:28:34,256 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-21 10:28:34,302 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:28:34,302 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:28:34,305 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:28:34,305 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:28:34,305 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:28:34,305 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:28:34,306 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:28:34,306 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:28:34,306 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:28:34,306 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:28:34,308 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:28:34,308 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:28:34,308 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:28:34,308 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:28:34,309 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:28:34,309 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:28:34,309 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:28:34,309 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:28:34,309 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:28:34,310 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:28:34,310 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:28:34,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:28:34,310 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:28:34,311 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:28:34,311 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:28:34,311 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:28:34,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:28:34,311 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:28:34,311 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:28:34,312 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 -> false [2020-09-21 10:28:34,776 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:28:34,797 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:28:34,803 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:28:34,805 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:28:34,806 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:28:34,807 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s5liff.c [2020-09-21 10:28:34,902 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/64003627e/3d8d43c19a0c47989a95a8addc8e3348/FLAG540a866cb [2020-09-21 10:28:35,456 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:28:35,457 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s5liff.c [2020-09-21 10:28:35,464 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/64003627e/3d8d43c19a0c47989a95a8addc8e3348/FLAG540a866cb [2020-09-21 10:28:35,790 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/64003627e/3d8d43c19a0c47989a95a8addc8e3348 [2020-09-21 10:28:35,805 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:28:35,812 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:28:35,813 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:28:35,813 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:28:35,818 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:28:35,819 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:28:35" (1/1) ... [2020-09-21 10:28:35,826 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@434f45a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:35, skipping insertion in model container [2020-09-21 10:28:35,826 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:28:35" (1/1) ... [2020-09-21 10:28:35,836 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:28:35,868 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:28:36,144 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:28:36,153 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:28:36,183 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:28:36,214 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:28:36,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:36 WrapperNode [2020-09-21 10:28:36,217 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:28:36,217 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:28:36,218 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:28:36,218 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:28:36,314 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:36" (1/1) ... [2020-09-21 10:28:36,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:36" (1/1) ... [2020-09-21 10:28:36,325 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:36" (1/1) ... [2020-09-21 10:28:36,326 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:36" (1/1) ... [2020-09-21 10:28:36,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:36" (1/1) ... [2020-09-21 10:28:36,351 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:36" (1/1) ... [2020-09-21 10:28:36,353 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:36" (1/1) ... [2020-09-21 10:28:36,356 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:28:36,357 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:28:36,357 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:28:36,357 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:28:36,359 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:36" (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 [2020-09-21 10:28:36,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:28:36,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:28:36,430 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-21 10:28:36,430 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-21 10:28:36,430 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:28:36,430 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:28:36,430 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 10:28:36,431 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-21 10:28:36,431 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-21 10:28:36,431 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 10:28:36,431 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 10:28:36,431 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:28:36,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 10:28:36,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 10:28:36,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 10:28:36,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 10:28:36,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 10:28:36,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:28:36,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:28:36,745 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:28:36,745 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-21 10:28:36,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:28:36 BoogieIcfgContainer [2020-09-21 10:28:36,752 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:28:36,754 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:28:36,754 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:28:36,759 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:28:36,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:28:35" (1/3) ... [2020-09-21 10:28:36,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dfe603b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:28:36, skipping insertion in model container [2020-09-21 10:28:36,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:36" (2/3) ... [2020-09-21 10:28:36,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dfe603b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:28:36, skipping insertion in model container [2020-09-21 10:28:36,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:28:36" (3/3) ... [2020-09-21 10:28:36,763 INFO L109 eAbstractionObserver]: Analyzing ICFG s5liff.c [2020-09-21 10:28:36,780 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:28:36,789 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 10:28:36,815 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 10:28:36,848 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:28:36,848 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:28:36,848 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:28:36,849 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:28:36,849 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:28:36,849 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:28:36,849 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:28:36,849 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:28:36,873 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-09-21 10:28:36,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-21 10:28:36,881 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:28:36,882 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] [2020-09-21 10:28:36,883 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:28:36,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:28:36,892 INFO L82 PathProgramCache]: Analyzing trace with hash -88121349, now seen corresponding path program 1 times [2020-09-21 10:28:36,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:28:36,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [291985026] [2020-09-21 10:28:36,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:28:37,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:28:37,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:28:37,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:28:37,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 10:28:37,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:28:37,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:28:37,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [291985026] [2020-09-21 10:28:37,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:28:37,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 10:28:37,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640373317] [2020-09-21 10:28:37,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 10:28:37,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:28:37,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 10:28:37,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 10:28:37,155 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-09-21 10:28:37,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:28:37,309 INFO L93 Difference]: Finished difference Result 60 states and 77 transitions. [2020-09-21 10:28:37,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 10:28:37,311 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-09-21 10:28:37,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:28:37,323 INFO L225 Difference]: With dead ends: 60 [2020-09-21 10:28:37,323 INFO L226 Difference]: Without dead ends: 28 [2020-09-21 10:28:37,328 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 [2020-09-21 10:28:37,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-21 10:28:37,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-21 10:28:37,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-21 10:28:37,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2020-09-21 10:28:37,382 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 23 [2020-09-21 10:28:37,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:28:37,382 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2020-09-21 10:28:37,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 10:28:37,383 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-09-21 10:28:37,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-21 10:28:37,384 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:28:37,384 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] [2020-09-21 10:28:37,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:28:37,385 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:28:37,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:28:37,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1099238599, now seen corresponding path program 1 times [2020-09-21 10:28:37,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:28:37,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1773093085] [2020-09-21 10:28:37,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:28:37,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:28:37,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:28:37,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:28:37,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 10:28:37,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:28:37,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:28:37,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1773093085] [2020-09-21 10:28:37,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:28:37,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 10:28:37,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950995211] [2020-09-21 10:28:37,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 10:28:37,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:28:37,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 10:28:37,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:28:37,527 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 5 states. [2020-09-21 10:28:37,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:28:37,682 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2020-09-21 10:28:37,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 10:28:37,683 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-09-21 10:28:37,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:28:37,684 INFO L225 Difference]: With dead ends: 48 [2020-09-21 10:28:37,684 INFO L226 Difference]: Without dead ends: 35 [2020-09-21 10:28:37,685 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 [2020-09-21 10:28:37,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-21 10:28:37,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2020-09-21 10:28:37,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-21 10:28:37,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-09-21 10:28:37,709 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 23 [2020-09-21 10:28:37,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:28:37,710 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-09-21 10:28:37,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 10:28:37,710 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-09-21 10:28:37,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-21 10:28:37,713 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:28:37,713 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] [2020-09-21 10:28:37,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 10:28:37,713 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:28:37,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:28:37,715 INFO L82 PathProgramCache]: Analyzing trace with hash 188437731, now seen corresponding path program 1 times [2020-09-21 10:28:37,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:28:37,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [559684627] [2020-09-21 10:28:37,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:28:37,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 10:28:37,807 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 10:28:37,810 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 10:28:37,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 10:28:37,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 10:28:37 BoogieIcfgContainer [2020-09-21 10:28:37,846 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 10:28:37,862 INFO L168 Benchmark]: Toolchain (without parser) took 2050.45 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 102.4 MB in the beginning and 106.9 MB in the end (delta: -4.5 MB). Peak memory consumption was 57.8 MB. Max. memory is 7.1 GB. [2020-09-21 10:28:37,863 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 10:28:37,865 INFO L168 Benchmark]: CACSL2BoogieTranslator took 404.28 ms. Allocated memory is still 140.5 MB. Free memory was 101.7 MB in the beginning and 91.1 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-09-21 10:28:37,866 INFO L168 Benchmark]: Boogie Preprocessor took 138.73 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 91.1 MB in the beginning and 180.4 MB in the end (delta: -89.2 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. [2020-09-21 10:28:37,867 INFO L168 Benchmark]: RCFGBuilder took 396.17 ms. Allocated memory is still 202.9 MB. Free memory was 180.4 MB in the beginning and 162.5 MB in the end (delta: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 7.1 GB. [2020-09-21 10:28:37,870 INFO L168 Benchmark]: TraceAbstraction took 1100.65 ms. Allocated memory is still 202.9 MB. Free memory was 161.9 MB in the beginning and 106.9 MB in the end (delta: 54.9 MB). Peak memory consumption was 54.9 MB. Max. memory is 7.1 GB. [2020-09-21 10:28:37,878 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 404.28 ms. Allocated memory is still 140.5 MB. Free memory was 101.7 MB in the beginning and 91.1 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 138.73 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 91.1 MB in the beginning and 180.4 MB in the end (delta: -89.2 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 396.17 ms. Allocated memory is still 202.9 MB. Free memory was 180.4 MB in the beginning and 162.5 MB in the end (delta: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1100.65 ms. Allocated memory is still 202.9 MB. Free memory was 161.9 MB in the beginning and 106.9 MB in the end (delta: 54.9 MB). Peak memory consumption was 54.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a 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] int *a = malloc(sizeof(int)*N); [L29] sum[0] = N [L30] i=0 [L30] COND TRUE i