/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=0.1 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/condnf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 03:41:20,402 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 03:41:20,405 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 03:41:20,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 03:41:20,443 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 03:41:20,454 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 03:41:20,456 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 03:41:20,458 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 03:41:20,461 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 03:41:20,463 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 03:41:20,466 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 03:41:20,468 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 03:41:20,468 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 03:41:20,470 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 03:41:20,470 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 03:41:20,473 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 03:41:20,474 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 03:41:20,476 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 03:41:20,478 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 03:41:20,484 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 03:41:20,485 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 03:41:20,488 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 03:41:20,488 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 03:41:20,489 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 03:41:20,494 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 03:41:20,503 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 03:41:20,504 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 03:41:20,506 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 03:41:20,507 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 03:41:20,546 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 03:41:20,547 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 03:41:20,548 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 03:41:20,549 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 03:41:20,549 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 03:41:20,549 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 03:41:20,550 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 03:41:20,550 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 03:41:20,550 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 03:41:20,550 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 03:41:20,551 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 03:41:20,552 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 03:41:20,552 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 03:41:20,552 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 03:41:20,553 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 03:41:20,553 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 03:41:20,553 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 03:41:20,553 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 03:41:20,553 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 03:41:20,554 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 03:41:20,554 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 03:41:20,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 03:41:20,554 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 03:41:20,554 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 03:41:20,555 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 03:41:20,555 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 03:41:20,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 03:41:20,555 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 03:41:20,555 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 03:41:20,556 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=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; [2020-08-19 03:41:20,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 03:41:20,868 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 03:41:20,872 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 03:41:20,873 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 03:41:20,873 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 03:41:20,874 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condnf.c [2020-08-19 03:41:20,938 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d5b95c48b/ee49b5770b4d4a3497334c7062896056/FLAG7143b333b [2020-08-19 03:41:21,368 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 03:41:21,369 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/condnf.c [2020-08-19 03:41:21,376 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d5b95c48b/ee49b5770b4d4a3497334c7062896056/FLAG7143b333b [2020-08-19 03:41:21,745 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d5b95c48b/ee49b5770b4d4a3497334c7062896056 [2020-08-19 03:41:21,754 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 03:41:21,755 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 03:41:21,756 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 03:41:21,756 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 03:41:21,759 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 03:41:21,760 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:41:21" (1/1) ... [2020-08-19 03:41:21,763 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36e1c4f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:41:21, skipping insertion in model container [2020-08-19 03:41:21,763 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:41:21" (1/1) ... [2020-08-19 03:41:21,770 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 03:41:21,787 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 03:41:21,965 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:41:21,975 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 03:41:21,994 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:41:22,010 INFO L208 MainTranslator]: Completed translation [2020-08-19 03:41:22,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:41:22 WrapperNode [2020-08-19 03:41:22,011 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 03:41:22,012 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 03:41:22,012 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 03:41:22,012 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 03:41:22,103 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:41:22" (1/1) ... [2020-08-19 03:41:22,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:41:22" (1/1) ... [2020-08-19 03:41:22,111 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:41:22" (1/1) ... [2020-08-19 03:41:22,111 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:41:22" (1/1) ... [2020-08-19 03:41:22,118 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:41:22" (1/1) ... [2020-08-19 03:41:22,124 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:41:22" (1/1) ... [2020-08-19 03:41:22,125 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:41:22" (1/1) ... [2020-08-19 03:41:22,127 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 03:41:22,127 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 03:41:22,128 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 03:41:22,128 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 03:41:22,129 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:41:22" (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 03:41:22,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 03:41:22,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 03:41:22,186 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-19 03:41:22,186 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-19 03:41:22,186 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 03:41:22,187 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 03:41:22,187 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 03:41:22,187 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-19 03:41:22,187 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-19 03:41:22,187 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 03:41:22,187 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 03:41:22,188 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 03:41:22,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 03:41:22,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 03:41:22,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 03:41:22,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 03:41:22,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 03:41:22,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 03:41:22,512 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 03:41:22,512 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-08-19 03:41:22,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:41:22 BoogieIcfgContainer [2020-08-19 03:41:22,516 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 03:41:22,517 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 03:41:22,517 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 03:41:22,520 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 03:41:22,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 03:41:21" (1/3) ... [2020-08-19 03:41:22,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1931b6dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:41:22, skipping insertion in model container [2020-08-19 03:41:22,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:41:22" (2/3) ... [2020-08-19 03:41:22,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1931b6dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:41:22, skipping insertion in model container [2020-08-19 03:41:22,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:41:22" (3/3) ... [2020-08-19 03:41:22,523 INFO L109 eAbstractionObserver]: Analyzing ICFG condnf.c [2020-08-19 03:41:22,533 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 03:41:22,540 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 03:41:22,553 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 03:41:22,575 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 03:41:22,575 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 03:41:22,575 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 03:41:22,575 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 03:41:22,576 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 03:41:22,576 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 03:41:22,576 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 03:41:22,576 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 03:41:22,592 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-08-19 03:41:22,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-19 03:41:22,598 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:41:22,598 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] [2020-08-19 03:41:22,599 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:41:22,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:41:22,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1524373234, now seen corresponding path program 1 times [2020-08-19 03:41:22,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:41:22,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890278478] [2020-08-19 03:41:22,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:41:22,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:41:22,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:41:22,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:41:22,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 03:41:22,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:41:22,796 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 03:41:22,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890278478] [2020-08-19 03:41:22,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:41:22,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 03:41:22,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438034041] [2020-08-19 03:41:22,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 03:41:22,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:41:22,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 03:41:22,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 03:41:22,821 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-08-19 03:41:22,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:41:22,920 INFO L93 Difference]: Finished difference Result 60 states and 77 transitions. [2020-08-19 03:41:22,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 03:41:22,922 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-08-19 03:41:22,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:41:22,931 INFO L225 Difference]: With dead ends: 60 [2020-08-19 03:41:22,931 INFO L226 Difference]: Without dead ends: 30 [2020-08-19 03:41:22,935 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 03:41:22,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-08-19 03:41:22,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-08-19 03:41:22,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-19 03:41:22,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-08-19 03:41:22,972 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 22 [2020-08-19 03:41:22,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:41:22,973 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-08-19 03:41:22,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 03:41:22,974 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-08-19 03:41:22,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-19 03:41:22,975 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:41:22,975 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] [2020-08-19 03:41:22,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 03:41:22,976 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:41:22,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:41:22,976 INFO L82 PathProgramCache]: Analyzing trace with hash -2111179248, now seen corresponding path program 1 times [2020-08-19 03:41:22,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:41:22,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176013300] [2020-08-19 03:41:22,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:41:23,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:41:23,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:41:23,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:41:23,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 03:41:23,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:41:23,126 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 03:41:23,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176013300] [2020-08-19 03:41:23,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:41:23,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 03:41:23,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443190335] [2020-08-19 03:41:23,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 03:41:23,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:41:23,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 03:41:23,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:41:23,137 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 5 states. [2020-08-19 03:41:23,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:41:23,311 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2020-08-19 03:41:23,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 03:41:23,312 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-08-19 03:41:23,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:41:23,314 INFO L225 Difference]: With dead ends: 54 [2020-08-19 03:41:23,315 INFO L226 Difference]: Without dead ends: 39 [2020-08-19 03:41:23,316 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 03:41:23,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-08-19 03:41:23,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2020-08-19 03:41:23,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-08-19 03:41:23,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-08-19 03:41:23,329 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 22 [2020-08-19 03:41:23,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:41:23,330 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-08-19 03:41:23,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 03:41:23,330 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-08-19 03:41:23,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-19 03:41:23,331 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:41:23,331 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] [2020-08-19 03:41:23,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 03:41:23,332 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:41:23,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:41:23,332 INFO L82 PathProgramCache]: Analyzing trace with hash 373909448, now seen corresponding path program 1 times [2020-08-19 03:41:23,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:41:23,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1663451575] [2020-08-19 03:41:23,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:41:23,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 03:41:23,390 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 03:41:23,392 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 03:41:23,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 03:41:23,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 03:41:23 BoogieIcfgContainer [2020-08-19 03:41:23,421 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 03:41:23,427 INFO L168 Benchmark]: Toolchain (without parser) took 1668.27 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 102.9 MB in the beginning and 108.3 MB in the end (delta: -5.4 MB). Peak memory consumption was 57.5 MB. Max. memory is 7.1 GB. [2020-08-19 03:41:23,436 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-19 03:41:23,437 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.39 ms. Allocated memory is still 141.0 MB. Free memory was 102.7 MB in the beginning and 92.4 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-08-19 03:41:23,439 INFO L168 Benchmark]: Boogie Preprocessor took 115.33 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 92.4 MB in the beginning and 181.3 MB in the end (delta: -88.9 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-08-19 03:41:23,440 INFO L168 Benchmark]: RCFGBuilder took 388.29 ms. Allocated memory is still 203.9 MB. Free memory was 181.3 MB in the beginning and 164.4 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 7.1 GB. [2020-08-19 03:41:23,442 INFO L168 Benchmark]: TraceAbstraction took 904.64 ms. Allocated memory is still 203.9 MB. Free memory was 164.4 MB in the beginning and 108.3 MB in the end (delta: 56.1 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2020-08-19 03:41:23,452 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 255.39 ms. Allocated memory is still 141.0 MB. Free memory was 102.7 MB in the beginning and 92.4 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.33 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 92.4 MB in the beginning and 181.3 MB in the end (delta: -88.9 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 388.29 ms. Allocated memory is still 203.9 MB. Free memory was 181.3 MB in the beginning and 164.4 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 904.64 ms. Allocated memory is still 203.9 MB. Free memory was 164.4 MB in the beginning and 108.3 MB in the end (delta: 56.1 MB). Peak memory consumption was 56.1 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