/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=0.2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/modsf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 23:38:35,629 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 23:38:35,635 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 23:38:35,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 23:38:35,675 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 23:38:35,682 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 23:38:35,683 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 23:38:35,685 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 23:38:35,687 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 23:38:35,688 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 23:38:35,689 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 23:38:35,690 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 23:38:35,690 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 23:38:35,691 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 23:38:35,692 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 23:38:35,693 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 23:38:35,693 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 23:38:35,694 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 23:38:35,696 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 23:38:35,698 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 23:38:35,699 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 23:38:35,700 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 23:38:35,702 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 23:38:35,702 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 23:38:35,705 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 23:38:35,705 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 23:38:35,705 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 23:38:35,706 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 23:38:35,706 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 23:38:35,707 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-18 23:38:35,712 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 23:38:35,713 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 23:38:35,714 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 23:38:35,715 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 [2020-08-18 23:38:35,737 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 23:38:35,738 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 23:38:35,739 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 23:38:35,739 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 23:38:35,739 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 23:38:35,740 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 23:38:35,740 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 23:38:35,740 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 23:38:35,740 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 23:38:35,740 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 23:38:35,741 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 23:38:35,741 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 23:38:35,741 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 23:38:35,741 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 23:38:35,741 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 23:38:35,742 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 23:38:35,742 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 23:38:35,742 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 23:38:35,742 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 23:38:35,742 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 23:38:35,743 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 23:38:35,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 23:38:35,743 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 23:38:35,743 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 23:38:35,743 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 23:38:35,744 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 23:38:35,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 23:38:35,744 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 23:38:35,744 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 23:38:35,744 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=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; [2020-08-18 23:38:36,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 23:38:36,039 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 23:38:36,043 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 23:38:36,044 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 23:38:36,046 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 23:38:36,047 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/modsf.c [2020-08-18 23:38:36,125 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e63605aa2/65b61ab772724e57a644eedcdb99461b/FLAGf155a81ff [2020-08-18 23:38:36,633 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 23:38:36,633 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/modsf.c [2020-08-18 23:38:36,639 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e63605aa2/65b61ab772724e57a644eedcdb99461b/FLAGf155a81ff [2020-08-18 23:38:37,054 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e63605aa2/65b61ab772724e57a644eedcdb99461b [2020-08-18 23:38:37,063 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 23:38:37,065 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 23:38:37,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 23:38:37,066 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 23:38:37,070 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 23:38:37,071 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:38:37" (1/1) ... [2020-08-18 23:38:37,074 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54bef0fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:38:37, skipping insertion in model container [2020-08-18 23:38:37,074 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:38:37" (1/1) ... [2020-08-18 23:38:37,082 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 23:38:37,105 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 23:38:37,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:38:37,323 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 23:38:37,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:38:37,441 INFO L208 MainTranslator]: Completed translation [2020-08-18 23:38:37,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:38:37 WrapperNode [2020-08-18 23:38:37,443 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 23:38:37,444 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 23:38:37,444 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 23:38:37,444 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 23:38:37,454 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:38:37" (1/1) ... [2020-08-18 23:38:37,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:38:37" (1/1) ... [2020-08-18 23:38:37,464 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:38:37" (1/1) ... [2020-08-18 23:38:37,464 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:38:37" (1/1) ... [2020-08-18 23:38:37,473 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:38:37" (1/1) ... [2020-08-18 23:38:37,480 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:38:37" (1/1) ... [2020-08-18 23:38:37,481 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:38:37" (1/1) ... [2020-08-18 23:38:37,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 23:38:37,485 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 23:38:37,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 23:38:37,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 23:38:37,486 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:38:37" (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 [2020-08-18 23:38:37,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 23:38:37,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 23:38:37,558 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 23:38:37,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-18 23:38:37,558 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 23:38:37,558 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 23:38:37,559 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 23:38:37,560 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 23:38:37,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-18 23:38:37,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 23:38:37,561 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 23:38:37,561 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 23:38:37,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 23:38:37,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 23:38:37,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 23:38:37,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 23:38:37,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 23:38:37,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 23:38:37,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 23:38:37,868 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 23:38:37,868 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 23:38:37,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:38:37 BoogieIcfgContainer [2020-08-18 23:38:37,873 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 23:38:37,875 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 23:38:37,876 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 23:38:37,880 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 23:38:37,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:38:37" (1/3) ... [2020-08-18 23:38:37,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@321118e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:38:37, skipping insertion in model container [2020-08-18 23:38:37,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:38:37" (2/3) ... [2020-08-18 23:38:37,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@321118e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:38:37, skipping insertion in model container [2020-08-18 23:38:37,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:38:37" (3/3) ... [2020-08-18 23:38:37,884 INFO L109 eAbstractionObserver]: Analyzing ICFG modsf.c [2020-08-18 23:38:37,895 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 23:38:37,903 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 23:38:37,919 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 23:38:37,947 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 23:38:37,947 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 23:38:37,947 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 23:38:37,947 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 23:38:37,948 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 23:38:37,948 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 23:38:37,948 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 23:38:37,949 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 23:38:37,970 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-08-18 23:38:37,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-18 23:38:37,977 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:38:37,978 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] [2020-08-18 23:38:37,979 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:38:37,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:38:37,987 INFO L82 PathProgramCache]: Analyzing trace with hash -173101897, now seen corresponding path program 1 times [2020-08-18 23:38:37,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:38:37,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722506905] [2020-08-18 23:38:37,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:38:38,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:38:38,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:38:38,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:38:38,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 23:38:38,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:38:38,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:38:38,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1722506905] [2020-08-18 23:38:38,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:38:38,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 23:38:38,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889232384] [2020-08-18 23:38:38,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 23:38:38,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:38:38,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 23:38:38,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 23:38:38,224 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2020-08-18 23:38:38,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:38:38,362 INFO L93 Difference]: Finished difference Result 70 states and 93 transitions. [2020-08-18 23:38:38,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 23:38:38,364 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-08-18 23:38:38,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:38:38,374 INFO L225 Difference]: With dead ends: 70 [2020-08-18 23:38:38,375 INFO L226 Difference]: Without dead ends: 35 [2020-08-18 23:38:38,379 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 [2020-08-18 23:38:38,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-08-18 23:38:38,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-08-18 23:38:38,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-08-18 23:38:38,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-08-18 23:38:38,425 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 26 [2020-08-18 23:38:38,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:38:38,425 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-08-18 23:38:38,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 23:38:38,426 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-08-18 23:38:38,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-18 23:38:38,427 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:38:38,428 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] [2020-08-18 23:38:38,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 23:38:38,428 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:38:38,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:38:38,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1503462707, now seen corresponding path program 1 times [2020-08-18 23:38:38,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:38:38,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [995421126] [2020-08-18 23:38:38,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:38:38,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:38:38,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:38:38,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:38:38,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 23:38:38,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:38:38,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:38:38,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [995421126] [2020-08-18 23:38:38,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:38:38,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 23:38:38,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88190316] [2020-08-18 23:38:38,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 23:38:38,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:38:38,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 23:38:38,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 23:38:38,580 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 5 states. [2020-08-18 23:38:38,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:38:38,846 INFO L93 Difference]: Finished difference Result 67 states and 79 transitions. [2020-08-18 23:38:38,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 23:38:38,846 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-08-18 23:38:38,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:38:38,851 INFO L225 Difference]: With dead ends: 67 [2020-08-18 23:38:38,851 INFO L226 Difference]: Without dead ends: 47 [2020-08-18 23:38:38,854 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 [2020-08-18 23:38:38,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-08-18 23:38:38,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 39. [2020-08-18 23:38:38,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-08-18 23:38:38,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-08-18 23:38:38,894 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 26 [2020-08-18 23:38:38,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:38:38,895 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-08-18 23:38:38,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 23:38:38,895 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-08-18 23:38:38,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-18 23:38:38,897 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:38:38,897 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, 1, 1, 1] [2020-08-18 23:38:38,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 23:38:38,898 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:38:38,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:38:38,898 INFO L82 PathProgramCache]: Analyzing trace with hash -260192085, now seen corresponding path program 1 times [2020-08-18 23:38:38,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:38:38,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255734462] [2020-08-18 23:38:38,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:38:38,943 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-18 23:38:38,944 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-08-18 23:38:38,944 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 23:38:38,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 23:38:38,980 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-18 23:38:38,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 11:38:38 BoogieIcfgContainer [2020-08-18 23:38:38,989 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 23:38:38,992 INFO L168 Benchmark]: Toolchain (without parser) took 1925.88 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 103.8 MB in the beginning and 98.2 MB in the end (delta: 5.6 MB). Peak memory consumption was 68.0 MB. Max. memory is 7.1 GB. [2020-08-18 23:38:38,994 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-18 23:38:38,996 INFO L168 Benchmark]: CACSL2BoogieTranslator took 377.06 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 103.6 MB in the beginning and 181.8 MB in the end (delta: -78.2 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-08-18 23:38:38,997 INFO L168 Benchmark]: Boogie Preprocessor took 40.79 ms. Allocated memory is still 202.9 MB. Free memory was 181.8 MB in the beginning and 179.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-08-18 23:38:38,998 INFO L168 Benchmark]: RCFGBuilder took 389.01 ms. Allocated memory is still 202.9 MB. Free memory was 178.8 MB in the beginning and 159.8 MB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2020-08-18 23:38:39,001 INFO L168 Benchmark]: TraceAbstraction took 1113.63 ms. Allocated memory is still 202.9 MB. Free memory was 159.8 MB in the beginning and 98.2 MB in the end (delta: 61.6 MB). Peak memory consumption was 61.6 MB. Max. memory is 7.1 GB. [2020-08-18 23:38:39,008 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 377.06 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 103.6 MB in the beginning and 181.8 MB in the end (delta: -78.2 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 40.79 ms. Allocated memory is still 202.9 MB. Free memory was 181.8 MB in the beginning and 179.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 389.01 ms. Allocated memory is still 202.9 MB. Free memory was 178.8 MB in the beginning and 159.8 MB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1113.63 ms. Allocated memory is still 202.9 MB. Free memory was 159.8 MB in the beginning and 98.2 MB in the end (delta: 61.6 MB). Peak memory consumption was 61.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long sum[1]; [L27] long long *a = malloc(sizeof(long long)*N); [L29] sum[0] = 0 [L30] i=0 [L30] COND TRUE i