/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=HIGHLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/condnf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 19:03:41,589 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 19:03:41,591 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 19:03:41,630 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 19:03:41,630 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 19:03:41,639 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 19:03:41,642 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 19:03:41,645 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 19:03:41,648 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 19:03:41,651 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 19:03:41,652 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 19:03:41,653 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 19:03:41,653 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 19:03:41,656 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 19:03:41,658 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 19:03:41,660 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 19:03:41,661 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 19:03:41,662 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 19:03:41,663 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 19:03:41,671 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 19:03:41,673 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 19:03:41,674 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 19:03:41,675 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 19:03:41,676 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 19:03:41,688 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 19:03:41,692 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 19:03:41,692 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 19:03:41,693 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 19:03:41,694 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 19:03:41,694 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-21 19:03:41,705 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 19:03:41,706 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 19:03:41,707 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 19:03:41,708 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 [2020-08-21 19:03:41,744 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 19:03:41,745 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 19:03:41,746 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 19:03:41,746 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 19:03:41,747 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 19:03:41,747 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 19:03:41,747 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 19:03:41,747 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 19:03:41,748 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 19:03:41,748 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 19:03:41,749 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 19:03:41,749 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 19:03:41,749 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 19:03:41,749 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 19:03:41,750 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 19:03:41,750 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 19:03:41,750 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 19:03:41,750 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 19:03:41,750 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 19:03:41,751 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 19:03:41,751 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 19:03:41,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 19:03:41,751 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 19:03:41,751 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 19:03:41,752 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 19:03:41,752 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 19:03:41,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 19:03:41,752 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 19:03:41,752 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 19:03:41,753 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; [2020-08-21 19:03:42,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 19:03:42,083 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 19:03:42,087 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 19:03:42,089 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 19:03:42,089 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 19:03:42,090 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condnf.c [2020-08-21 19:03:42,155 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fbaad8d23/cc3a9c4401e14296b2f1b63c8fdb6d4e/FLAG32616ac31 [2020-08-21 19:03:42,612 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 19:03:42,613 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/condnf.c [2020-08-21 19:03:42,620 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fbaad8d23/cc3a9c4401e14296b2f1b63c8fdb6d4e/FLAG32616ac31 [2020-08-21 19:03:42,984 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fbaad8d23/cc3a9c4401e14296b2f1b63c8fdb6d4e [2020-08-21 19:03:42,995 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 19:03:42,997 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 19:03:43,002 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 19:03:43,003 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 19:03:43,006 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 19:03:43,008 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 07:03:42" (1/1) ... [2020-08-21 19:03:43,011 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a8c36e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:03:43, skipping insertion in model container [2020-08-21 19:03:43,011 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 07:03:42" (1/1) ... [2020-08-21 19:03:43,020 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 19:03:43,041 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 19:03:43,198 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 19:03:43,209 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 19:03:43,229 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 19:03:43,246 INFO L208 MainTranslator]: Completed translation [2020-08-21 19:03:43,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:03:43 WrapperNode [2020-08-21 19:03:43,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 19:03:43,247 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 19:03:43,248 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 19:03:43,248 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 19:03:43,342 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:03:43" (1/1) ... [2020-08-21 19:03:43,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:03:43" (1/1) ... [2020-08-21 19:03:43,352 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:03:43" (1/1) ... [2020-08-21 19:03:43,353 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:03:43" (1/1) ... [2020-08-21 19:03:43,374 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:03:43" (1/1) ... [2020-08-21 19:03:43,380 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:03:43" (1/1) ... [2020-08-21 19:03:43,382 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:03:43" (1/1) ... [2020-08-21 19:03:43,384 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 19:03:43,385 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 19:03:43,385 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 19:03:43,385 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 19:03:43,386 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:03:43" (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 [2020-08-21 19:03:43,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 19:03:43,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 19:03:43,444 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 19:03:43,445 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-21 19:03:43,445 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 19:03:43,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 19:03:43,445 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 19:03:43,445 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 19:03:43,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 19:03:43,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 19:03:43,446 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 19:03:43,446 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 19:03:43,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 19:03:43,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 19:03:43,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 19:03:43,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 19:03:43,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 19:03:43,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 19:03:43,856 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 19:03:43,857 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-08-21 19:03:43,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:03:43 BoogieIcfgContainer [2020-08-21 19:03:43,861 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 19:03:43,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 19:03:43,863 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 19:03:43,866 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 19:03:43,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 07:03:42" (1/3) ... [2020-08-21 19:03:43,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37272fbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:03:43, skipping insertion in model container [2020-08-21 19:03:43,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:03:43" (2/3) ... [2020-08-21 19:03:43,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37272fbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:03:43, skipping insertion in model container [2020-08-21 19:03:43,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:03:43" (3/3) ... [2020-08-21 19:03:43,870 INFO L109 eAbstractionObserver]: Analyzing ICFG condnf.c [2020-08-21 19:03:43,880 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 19:03:43,888 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 19:03:43,903 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 19:03:43,929 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 19:03:43,929 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 19:03:43,929 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 19:03:43,929 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 19:03:43,929 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 19:03:43,930 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 19:03:43,930 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 19:03:43,930 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 19:03:43,951 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-08-21 19:03:43,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-21 19:03:43,959 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:03:43,960 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] [2020-08-21 19:03:43,961 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:03:43,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:03:43,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1524373234, now seen corresponding path program 1 times [2020-08-21 19:03:43,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:03:43,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1184308123] [2020-08-21 19:03:43,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:03:44,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:03:44,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:03:44,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:03:44,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 19:03:44,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:03:44,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:03:44,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1184308123] [2020-08-21 19:03:44,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:03:44,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 19:03:44,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694767048] [2020-08-21 19:03:44,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 19:03:44,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:03:44,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 19:03:44,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 19:03:44,213 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-08-21 19:03:44,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:03:44,323 INFO L93 Difference]: Finished difference Result 60 states and 77 transitions. [2020-08-21 19:03:44,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 19:03:44,325 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-08-21 19:03:44,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:03:44,334 INFO L225 Difference]: With dead ends: 60 [2020-08-21 19:03:44,334 INFO L226 Difference]: Without dead ends: 30 [2020-08-21 19:03:44,338 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 [2020-08-21 19:03:44,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-08-21 19:03:44,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-08-21 19:03:44,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-21 19:03:44,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-08-21 19:03:44,377 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 22 [2020-08-21 19:03:44,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:03:44,378 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-08-21 19:03:44,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 19:03:44,378 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-08-21 19:03:44,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-21 19:03:44,380 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:03:44,380 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] [2020-08-21 19:03:44,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 19:03:44,380 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:03:44,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:03:44,381 INFO L82 PathProgramCache]: Analyzing trace with hash -2111179248, now seen corresponding path program 1 times [2020-08-21 19:03:44,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:03:44,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729386737] [2020-08-21 19:03:44,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:03:44,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:03:44,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:03:44,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:03:44,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 19:03:44,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:03:44,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:03:44,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [729386737] [2020-08-21 19:03:44,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:03:44,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 19:03:44,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272256039] [2020-08-21 19:03:44,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 19:03:44,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:03:44,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 19:03:44,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 19:03:44,519 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 5 states. [2020-08-21 19:03:44,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:03:44,684 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2020-08-21 19:03:44,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 19:03:44,685 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-08-21 19:03:44,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:03:44,688 INFO L225 Difference]: With dead ends: 54 [2020-08-21 19:03:44,688 INFO L226 Difference]: Without dead ends: 39 [2020-08-21 19:03:44,689 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 [2020-08-21 19:03:44,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-08-21 19:03:44,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2020-08-21 19:03:44,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-08-21 19:03:44,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-08-21 19:03:44,702 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 22 [2020-08-21 19:03:44,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:03:44,703 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-08-21 19:03:44,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 19:03:44,703 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-08-21 19:03:44,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-21 19:03:44,704 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:03:44,704 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] [2020-08-21 19:03:44,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 19:03:44,705 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:03:44,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:03:44,705 INFO L82 PathProgramCache]: Analyzing trace with hash 373909448, now seen corresponding path program 1 times [2020-08-21 19:03:44,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:03:44,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [969505591] [2020-08-21 19:03:44,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:03:44,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 19:03:44,747 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 19:03:44,747 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 19:03:44,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 19:03:44,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 07:03:44 BoogieIcfgContainer [2020-08-21 19:03:44,771 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 19:03:44,774 INFO L168 Benchmark]: Toolchain (without parser) took 1776.12 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 102.8 MB in the beginning and 105.9 MB in the end (delta: -3.1 MB). Peak memory consumption was 59.8 MB. Max. memory is 7.1 GB. [2020-08-21 19:03:44,775 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 19:03:44,776 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.08 ms. Allocated memory is still 140.0 MB. Free memory was 102.6 MB in the beginning and 92.2 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-08-21 19:03:44,777 INFO L168 Benchmark]: Boogie Preprocessor took 136.73 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 92.2 MB in the beginning and 180.3 MB in the end (delta: -88.0 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-08-21 19:03:44,778 INFO L168 Benchmark]: RCFGBuilder took 476.79 ms. Allocated memory is still 202.9 MB. Free memory was 180.3 MB in the beginning and 163.3 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 7.1 GB. [2020-08-21 19:03:44,779 INFO L168 Benchmark]: TraceAbstraction took 908.74 ms. Allocated memory is still 202.9 MB. Free memory was 162.7 MB in the beginning and 105.9 MB in the end (delta: 56.8 MB). Peak memory consumption was 56.8 MB. Max. memory is 7.1 GB. [2020-08-21 19:03:44,783 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 245.08 ms. Allocated memory is still 140.0 MB. Free memory was 102.6 MB in the beginning and 92.2 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 136.73 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 92.2 MB in the beginning and 180.3 MB in the end (delta: -88.0 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 476.79 ms. Allocated memory is still 202.9 MB. Free memory was 180.3 MB in the beginning and 163.3 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 908.74 ms. Allocated memory is still 202.9 MB. Free memory was 162.7 MB in the beginning and 105.9 MB in the end (delta: 56.8 MB). Peak memory consumption was 56.8 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 *a = malloc(sizeof(int)*N); [L28] i=0 [L28] COND TRUE i N [L36] EXPR a[i] [L36] a[i] = a[i] [L33] i++ [L33] COND FALSE !(i