/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/s32iff.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 05:18:39,383 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 05:18:39,386 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 05:18:39,433 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 05:18:39,434 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 05:18:39,447 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 05:18:39,448 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 05:18:39,451 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 05:18:39,455 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 05:18:39,459 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 05:18:39,460 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 05:18:39,462 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 05:18:39,463 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 05:18:39,466 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 05:18:39,469 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 05:18:39,471 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 05:18:39,473 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 05:18:39,474 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 05:18:39,476 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 05:18:39,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 05:18:39,486 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 05:18:39,487 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 05:18:39,488 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 05:18:39,489 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 05:18:39,494 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 05:18:39,505 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 05:18:39,506 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 05:18:39,508 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 05:18:39,509 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 05:18:39,552 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 05:18:39,552 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 05:18:39,555 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 05:18:39,555 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 05:18:39,555 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 05:18:39,556 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 05:18:39,556 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 05:18:39,556 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 05:18:39,556 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 05:18:39,557 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 05:18:39,558 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 05:18:39,558 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 05:18:39,558 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 05:18:39,559 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 05:18:39,559 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 05:18:39,559 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 05:18:39,559 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 05:18:39,560 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 05:18:39,560 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 05:18:39,560 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 05:18:39,560 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 05:18:39,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 05:18:39,561 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 05:18:39,561 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 05:18:39,561 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 05:18:39,561 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 05:18:39,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 05:18:39,562 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 05:18:39,562 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 05:18:39,562 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=SMALLESTAMONGWIDE;tolerance=0.3; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3; [2020-08-19 05:18:39,899 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 05:18:39,912 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 05:18:39,916 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 05:18:39,917 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 05:18:39,918 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 05:18:39,919 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s32iff.c [2020-08-19 05:18:40,000 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/df17ada17/bc12bb827da54c868381365af29231c3/FLAG2cfcd9ee0 [2020-08-19 05:18:40,473 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 05:18:40,474 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s32iff.c [2020-08-19 05:18:40,481 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/df17ada17/bc12bb827da54c868381365af29231c3/FLAG2cfcd9ee0 [2020-08-19 05:18:40,831 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/df17ada17/bc12bb827da54c868381365af29231c3 [2020-08-19 05:18:40,840 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 05:18:40,841 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 05:18:40,842 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 05:18:40,842 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 05:18:40,848 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 05:18:40,849 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:18:40" (1/1) ... [2020-08-19 05:18:40,852 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40221ae1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:18:40, skipping insertion in model container [2020-08-19 05:18:40,852 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:18:40" (1/1) ... [2020-08-19 05:18:40,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 05:18:40,875 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 05:18:41,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:18:41,071 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 05:18:41,094 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:18:41,110 INFO L208 MainTranslator]: Completed translation [2020-08-19 05:18:41,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:18:41 WrapperNode [2020-08-19 05:18:41,111 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 05:18:41,112 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 05:18:41,112 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 05:18:41,112 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 05:18:41,201 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:18:41" (1/1) ... [2020-08-19 05:18:41,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:18:41" (1/1) ... [2020-08-19 05:18:41,211 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:18:41" (1/1) ... [2020-08-19 05:18:41,211 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:18:41" (1/1) ... [2020-08-19 05:18:41,237 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:18:41" (1/1) ... [2020-08-19 05:18:41,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:18:41" (1/1) ... [2020-08-19 05:18:41,249 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:18:41" (1/1) ... [2020-08-19 05:18:41,252 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 05:18:41,253 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 05:18:41,253 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 05:18:41,253 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 05:18:41,254 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:18:41" (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 05:18:41,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 05:18:41,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 05:18:41,315 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-19 05:18:41,315 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-19 05:18:41,316 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 05:18:41,316 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 05:18:41,316 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 05:18:41,316 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-19 05:18:41,316 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-19 05:18:41,316 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 05:18:41,317 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 05:18:41,317 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 05:18:41,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 05:18:41,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 05:18:41,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 05:18:41,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 05:18:41,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 05:18:41,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 05:18:41,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 05:18:41,591 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 05:18:41,591 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-08-19 05:18:41,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:18:41 BoogieIcfgContainer [2020-08-19 05:18:41,596 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 05:18:41,598 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 05:18:41,598 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 05:18:41,603 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 05:18:41,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 05:18:40" (1/3) ... [2020-08-19 05:18:41,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b0fe483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:18:41, skipping insertion in model container [2020-08-19 05:18:41,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:18:41" (2/3) ... [2020-08-19 05:18:41,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b0fe483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:18:41, skipping insertion in model container [2020-08-19 05:18:41,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:18:41" (3/3) ... [2020-08-19 05:18:41,608 INFO L109 eAbstractionObserver]: Analyzing ICFG s32iff.c [2020-08-19 05:18:41,622 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 05:18:41,631 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 05:18:41,654 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 05:18:41,699 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 05:18:41,700 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 05:18:41,700 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 05:18:41,700 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 05:18:41,700 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 05:18:41,700 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 05:18:41,701 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 05:18:41,701 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 05:18:41,722 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-08-19 05:18:41,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-19 05:18:41,729 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:18:41,730 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 05:18:41,731 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:18:41,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:18:41,738 INFO L82 PathProgramCache]: Analyzing trace with hash 2033030480, now seen corresponding path program 1 times [2020-08-19 05:18:41,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:18:41,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1773914167] [2020-08-19 05:18:41,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:18:41,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:18:41,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:18:41,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:18:41,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 05:18:41,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:18:41,954 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 05:18:41,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1773914167] [2020-08-19 05:18:41,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:18:41,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 05:18:41,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31345035] [2020-08-19 05:18:41,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 05:18:41,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:18:41,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 05:18:41,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 05:18:41,981 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2020-08-19 05:18:42,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:18:42,104 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2020-08-19 05:18:42,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 05:18:42,106 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-08-19 05:18:42,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:18:42,115 INFO L225 Difference]: With dead ends: 62 [2020-08-19 05:18:42,115 INFO L226 Difference]: Without dead ends: 29 [2020-08-19 05:18:42,120 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 05:18:42,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-08-19 05:18:42,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-08-19 05:18:42,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-08-19 05:18:42,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-08-19 05:18:42,166 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 23 [2020-08-19 05:18:42,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:18:42,166 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-08-19 05:18:42,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 05:18:42,167 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-08-19 05:18:42,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-19 05:18:42,168 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:18:42,168 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 05:18:42,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 05:18:42,169 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:18:42,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:18:42,169 INFO L82 PathProgramCache]: Analyzing trace with hash 706992569, now seen corresponding path program 1 times [2020-08-19 05:18:42,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:18:42,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [410679123] [2020-08-19 05:18:42,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:18:42,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:18:42,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:18:42,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:18:42,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 05:18:42,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:18:42,285 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 05:18:42,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [410679123] [2020-08-19 05:18:42,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:18:42,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 05:18:42,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450546922] [2020-08-19 05:18:42,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 05:18:42,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:18:42,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 05:18:42,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 05:18:42,290 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 5 states. [2020-08-19 05:18:42,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:18:42,537 INFO L93 Difference]: Finished difference Result 51 states and 63 transitions. [2020-08-19 05:18:42,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 05:18:42,538 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-08-19 05:18:42,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:18:42,540 INFO L225 Difference]: With dead ends: 51 [2020-08-19 05:18:42,540 INFO L226 Difference]: Without dead ends: 37 [2020-08-19 05:18:42,541 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 05:18:42,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-08-19 05:18:42,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2020-08-19 05:18:42,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-08-19 05:18:42,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-08-19 05:18:42,551 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 23 [2020-08-19 05:18:42,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:18:42,552 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-08-19 05:18:42,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 05:18:42,552 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-08-19 05:18:42,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-19 05:18:42,553 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:18:42,554 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:18:42,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 05:18:42,554 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:18:42,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:18:42,555 INFO L82 PathProgramCache]: Analyzing trace with hash 284203188, now seen corresponding path program 1 times [2020-08-19 05:18:42,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:18:42,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168624674] [2020-08-19 05:18:42,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:18:42,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 05:18:42,609 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 05:18:42,609 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 05:18:42,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 05:18:42,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 05:18:42 BoogieIcfgContainer [2020-08-19 05:18:42,634 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 05:18:42,637 INFO L168 Benchmark]: Toolchain (without parser) took 1794.31 ms. Allocated memory was 143.1 MB in the beginning and 205.0 MB in the end (delta: 61.9 MB). Free memory was 104.7 MB in the beginning and 107.1 MB in the end (delta: -2.4 MB). Peak memory consumption was 59.4 MB. Max. memory is 7.1 GB. [2020-08-19 05:18:42,638 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 143.1 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-19 05:18:42,639 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.27 ms. Allocated memory is still 143.1 MB. Free memory was 104.5 MB in the beginning and 93.6 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-08-19 05:18:42,640 INFO L168 Benchmark]: Boogie Preprocessor took 140.42 ms. Allocated memory was 143.1 MB in the beginning and 205.0 MB in the end (delta: 61.9 MB). Free memory was 93.6 MB in the beginning and 182.6 MB in the end (delta: -89.0 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. [2020-08-19 05:18:42,641 INFO L168 Benchmark]: RCFGBuilder took 343.85 ms. Allocated memory is still 205.0 MB. Free memory was 182.6 MB in the beginning and 164.4 MB in the end (delta: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 7.1 GB. [2020-08-19 05:18:42,642 INFO L168 Benchmark]: TraceAbstraction took 1035.63 ms. Allocated memory is still 205.0 MB. Free memory was 163.8 MB in the beginning and 107.1 MB in the end (delta: 56.7 MB). Peak memory consumption was 56.7 MB. Max. memory is 7.1 GB. [2020-08-19 05:18:42,646 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 143.1 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 269.27 ms. Allocated memory is still 143.1 MB. Free memory was 104.5 MB in the beginning and 93.6 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 140.42 ms. Allocated memory was 143.1 MB in the beginning and 205.0 MB in the end (delta: 61.9 MB). Free memory was 93.6 MB in the beginning and 182.6 MB in the end (delta: -89.0 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 343.85 ms. Allocated memory is still 205.0 MB. Free memory was 182.6 MB in the beginning and 164.4 MB in the end (delta: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1035.63 ms. Allocated memory is still 205.0 MB. Free memory was 163.8 MB in the beginning and 107.1 MB in the end (delta: 56.7 MB). Peak memory consumption was 56.7 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] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] sum[0] = 1 [L30] i=0 [L30] COND TRUE i