/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/condaf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 01:15:44,059 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 01:15:44,062 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 01:15:44,105 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 01:15:44,106 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 01:15:44,116 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 01:15:44,118 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 01:15:44,122 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 01:15:44,124 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 01:15:44,127 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 01:15:44,128 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 01:15:44,129 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 01:15:44,129 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 01:15:44,132 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 01:15:44,135 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 01:15:44,137 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 01:15:44,138 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 01:15:44,139 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 01:15:44,141 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 01:15:44,149 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 01:15:44,151 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 01:15:44,152 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 01:15:44,153 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 01:15:44,154 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 01:15:44,168 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 01:15:44,184 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 01:15:44,188 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 01:15:44,189 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 01:15:44,190 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 [2020-08-19 01:15:44,226 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 01:15:44,227 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 01:15:44,229 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 01:15:44,229 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 01:15:44,229 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 01:15:44,229 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 01:15:44,230 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 01:15:44,230 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 01:15:44,230 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 01:15:44,230 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 01:15:44,231 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 01:15:44,232 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 01:15:44,232 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 01:15:44,232 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 01:15:44,232 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 01:15:44,233 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 01:15:44,233 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 01:15:44,233 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 01:15:44,233 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 01:15:44,233 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 01:15:44,234 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 01:15:44,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:15:44,234 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 01:15:44,234 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 01:15:44,234 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 01:15:44,235 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 01:15:44,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 01:15:44,235 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 01:15:44,235 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 01:15:44,235 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=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; [2020-08-19 01:15:44,510 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 01:15:44,523 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 01:15:44,527 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 01:15:44,528 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 01:15:44,529 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 01:15:44,530 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condaf.c [2020-08-19 01:15:44,605 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/38e83df9a/00c1db29b3754ba1b28127ccd18b77e8/FLAGc95fe2048 [2020-08-19 01:15:45,083 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 01:15:45,084 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/condaf.c [2020-08-19 01:15:45,091 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/38e83df9a/00c1db29b3754ba1b28127ccd18b77e8/FLAGc95fe2048 [2020-08-19 01:15:45,431 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/38e83df9a/00c1db29b3754ba1b28127ccd18b77e8 [2020-08-19 01:15:45,440 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 01:15:45,442 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 01:15:45,443 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 01:15:45,443 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 01:15:45,447 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 01:15:45,448 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:15:45" (1/1) ... [2020-08-19 01:15:45,450 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@788ef5e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:15:45, skipping insertion in model container [2020-08-19 01:15:45,451 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:15:45" (1/1) ... [2020-08-19 01:15:45,458 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 01:15:45,478 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 01:15:45,666 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:15:45,676 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 01:15:45,700 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:15:45,801 INFO L208 MainTranslator]: Completed translation [2020-08-19 01:15:45,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:15:45 WrapperNode [2020-08-19 01:15:45,802 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 01:15:45,803 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 01:15:45,803 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 01:15:45,803 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 01:15:45,815 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:15:45" (1/1) ... [2020-08-19 01:15:45,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:15:45" (1/1) ... [2020-08-19 01:15:45,823 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:15:45" (1/1) ... [2020-08-19 01:15:45,824 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:15:45" (1/1) ... [2020-08-19 01:15:45,833 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:15:45" (1/1) ... [2020-08-19 01:15:45,842 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:15:45" (1/1) ... [2020-08-19 01:15:45,844 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:15:45" (1/1) ... [2020-08-19 01:15:45,853 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 01:15:45,853 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 01:15:45,854 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 01:15:45,854 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 01:15:45,854 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:15:45" (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 [2020-08-19 01:15:45,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 01:15:45,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 01:15:45,915 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-19 01:15:45,915 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-19 01:15:45,915 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 01:15:45,916 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 01:15:45,916 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 01:15:45,916 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-19 01:15:45,916 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-19 01:15:45,916 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 01:15:45,916 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 01:15:45,917 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 01:15:45,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 01:15:45,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 01:15:45,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 01:15:45,917 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 01:15:45,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 01:15:45,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 01:15:45,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 01:15:46,190 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 01:15:46,190 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-08-19 01:15:46,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:15:46 BoogieIcfgContainer [2020-08-19 01:15:46,195 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 01:15:46,196 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 01:15:46,197 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 01:15:46,200 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 01:15:46,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 01:15:45" (1/3) ... [2020-08-19 01:15:46,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fccfb21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:15:46, skipping insertion in model container [2020-08-19 01:15:46,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:15:45" (2/3) ... [2020-08-19 01:15:46,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fccfb21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:15:46, skipping insertion in model container [2020-08-19 01:15:46,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:15:46" (3/3) ... [2020-08-19 01:15:46,204 INFO L109 eAbstractionObserver]: Analyzing ICFG condaf.c [2020-08-19 01:15:46,215 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 01:15:46,227 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 01:15:46,247 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 01:15:46,281 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 01:15:46,281 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 01:15:46,282 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 01:15:46,282 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 01:15:46,282 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 01:15:46,282 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 01:15:46,283 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 01:15:46,283 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 01:15:46,304 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-08-19 01:15:46,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-19 01:15:46,312 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:15:46,313 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] [2020-08-19 01:15:46,314 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:15:46,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:15:46,321 INFO L82 PathProgramCache]: Analyzing trace with hash -88121349, now seen corresponding path program 1 times [2020-08-19 01:15:46,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:15:46,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157427555] [2020-08-19 01:15:46,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:15:46,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:15:46,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:15:46,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:15:46,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 01:15:46,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:15:46,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:15:46,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [157427555] [2020-08-19 01:15:46,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:15:46,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:15:46,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992460228] [2020-08-19 01:15:46,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:15:46,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:15:46,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:15:46,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:15:46,575 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-08-19 01:15:46,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:15:46,690 INFO L93 Difference]: Finished difference Result 60 states and 77 transitions. [2020-08-19 01:15:46,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:15:46,692 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-08-19 01:15:46,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:15:46,702 INFO L225 Difference]: With dead ends: 60 [2020-08-19 01:15:46,702 INFO L226 Difference]: Without dead ends: 28 [2020-08-19 01:15:46,706 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 [2020-08-19 01:15:46,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-08-19 01:15:46,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-08-19 01:15:46,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-08-19 01:15:46,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2020-08-19 01:15:46,747 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 23 [2020-08-19 01:15:46,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:15:46,748 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2020-08-19 01:15:46,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:15:46,748 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-08-19 01:15:46,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-19 01:15:46,749 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:15:46,749 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] [2020-08-19 01:15:46,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 01:15:46,750 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:15:46,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:15:46,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1099238599, now seen corresponding path program 1 times [2020-08-19 01:15:46,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:15:46,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1382129153] [2020-08-19 01:15:46,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:15:46,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:15:46,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:15:46,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:15:46,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 01:15:46,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:15:46,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:15:46,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1382129153] [2020-08-19 01:15:46,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:15:46,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 01:15:46,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958174589] [2020-08-19 01:15:46,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 01:15:46,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:15:46,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 01:15:46,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:15:46,903 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 5 states. [2020-08-19 01:15:47,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:15:47,039 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2020-08-19 01:15:47,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 01:15:47,040 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-08-19 01:15:47,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:15:47,041 INFO L225 Difference]: With dead ends: 48 [2020-08-19 01:15:47,041 INFO L226 Difference]: Without dead ends: 35 [2020-08-19 01:15:47,043 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 [2020-08-19 01:15:47,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-08-19 01:15:47,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2020-08-19 01:15:47,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-08-19 01:15:47,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-08-19 01:15:47,052 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 23 [2020-08-19 01:15:47,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:15:47,053 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-08-19 01:15:47,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 01:15:47,053 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-08-19 01:15:47,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-19 01:15:47,054 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:15:47,054 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] [2020-08-19 01:15:47,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 01:15:47,055 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:15:47,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:15:47,056 INFO L82 PathProgramCache]: Analyzing trace with hash 188437731, now seen corresponding path program 1 times [2020-08-19 01:15:47,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:15:47,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1026909943] [2020-08-19 01:15:47,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:15:47,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:15:47,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:15:47,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:15:47,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 01:15:47,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:15:47,437 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 01:15:47,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1026909943] [2020-08-19 01:15:47,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:15:47,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-19 01:15:47,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596388302] [2020-08-19 01:15:47,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 01:15:47,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:15:47,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 01:15:47,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-08-19 01:15:47,440 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 9 states. [2020-08-19 01:15:47,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:15:47,636 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2020-08-19 01:15:47,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 01:15:47,636 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-08-19 01:15:47,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:15:47,637 INFO L225 Difference]: With dead ends: 50 [2020-08-19 01:15:47,638 INFO L226 Difference]: Without dead ends: 37 [2020-08-19 01:15:47,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-08-19 01:15:47,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-08-19 01:15:47,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2020-08-19 01:15:47,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-08-19 01:15:47,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-08-19 01:15:47,647 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 30 [2020-08-19 01:15:47,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:15:47,647 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-08-19 01:15:47,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 01:15:47,647 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-08-19 01:15:47,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-19 01:15:47,649 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:15:47,649 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] [2020-08-19 01:15:47,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 01:15:47,649 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:15:47,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:15:47,650 INFO L82 PathProgramCache]: Analyzing trace with hash 446603169, now seen corresponding path program 1 times [2020-08-19 01:15:47,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:15:47,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [261502218] [2020-08-19 01:15:47,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:15:47,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 01:15:47,684 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 01:15:47,684 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 01:15:47,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 01:15:47,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 01:15:47 BoogieIcfgContainer [2020-08-19 01:15:47,708 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 01:15:47,711 INFO L168 Benchmark]: Toolchain (without parser) took 2267.93 ms. Allocated memory was 142.1 MB in the beginning and 234.9 MB in the end (delta: 92.8 MB). Free memory was 105.3 MB in the beginning and 161.2 MB in the end (delta: -55.9 MB). Peak memory consumption was 36.9 MB. Max. memory is 7.1 GB. [2020-08-19 01:15:47,712 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 142.1 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 01:15:47,713 INFO L168 Benchmark]: CACSL2BoogieTranslator took 360.11 ms. Allocated memory was 142.1 MB in the beginning and 205.5 MB in the end (delta: 63.4 MB). Free memory was 105.1 MB in the beginning and 184.5 MB in the end (delta: -79.4 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-08-19 01:15:47,714 INFO L168 Benchmark]: Boogie Preprocessor took 49.90 ms. Allocated memory is still 205.5 MB. Free memory was 184.5 MB in the beginning and 182.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-08-19 01:15:47,715 INFO L168 Benchmark]: RCFGBuilder took 341.59 ms. Allocated memory is still 205.5 MB. Free memory was 182.2 MB in the beginning and 164.1 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. [2020-08-19 01:15:47,716 INFO L168 Benchmark]: TraceAbstraction took 1511.49 ms. Allocated memory was 205.5 MB in the beginning and 234.9 MB in the end (delta: 29.4 MB). Free memory was 163.5 MB in the beginning and 161.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2020-08-19 01:15:47,720 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 142.1 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 360.11 ms. Allocated memory was 142.1 MB in the beginning and 205.5 MB in the end (delta: 63.4 MB). Free memory was 105.1 MB in the beginning and 184.5 MB in the end (delta: -79.4 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 49.90 ms. Allocated memory is still 205.5 MB. Free memory was 184.5 MB in the beginning and 182.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 341.59 ms. Allocated memory is still 205.5 MB. Free memory was 182.2 MB in the beginning and 164.1 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1511.49 ms. Allocated memory was 205.5 MB in the beginning and 234.9 MB in the end (delta: 29.4 MB). Free memory was 163.5 MB in the beginning and 161.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 31.7 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] int sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] sum[0] = 0 [L30] i=0 [L30] COND TRUE i