/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=BIGGEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/sina1f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 18:00:16,496 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 18:00:16,500 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 18:00:16,542 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 18:00:16,543 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 18:00:16,552 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 18:00:16,554 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 18:00:16,557 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 18:00:16,560 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 18:00:16,564 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 18:00:16,565 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 18:00:16,566 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 18:00:16,566 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 18:00:16,570 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 18:00:16,572 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 18:00:16,573 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 18:00:16,576 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 18:00:16,577 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 18:00:16,579 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 18:00:16,586 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 18:00:16,589 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 18:00:16,590 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 18:00:16,590 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 18:00:16,592 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 18:00:16,604 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 18:00:16,604 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 18:00:16,604 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 18:00:16,605 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 18:00:16,611 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 18:00:16,612 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-18 18:00:16,621 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 18:00:16,622 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 18:00:16,623 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 18:00:16,623 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 18:00:16,660 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 18:00:16,660 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 18:00:16,662 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 18:00:16,662 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 18:00:16,663 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 18:00:16,663 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 18:00:16,663 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 18:00:16,663 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 18:00:16,664 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 18:00:16,664 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 18:00:16,665 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 18:00:16,665 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 18:00:16,665 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 18:00:16,665 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 18:00:16,666 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 18:00:16,666 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 18:00:16,667 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 18:00:16,667 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 18:00:16,667 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 18:00:16,667 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 18:00:16,667 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 18:00:16,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 18:00:16,668 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 18:00:16,668 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 18:00:16,668 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 18:00:16,668 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 18:00:16,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 18:00:16,669 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 18:00:16,669 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 18:00:16,669 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=BIGGEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=BIGGEST; [2020-08-18 18:00:16,974 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 18:00:16,992 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 18:00:16,996 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 18:00:16,997 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 18:00:16,998 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 18:00:16,999 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sina1f.c [2020-08-18 18:00:17,069 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/92d2017b8/721a2349bced4e1e8fe5327ae97c3835/FLAG74dc14bb7 [2020-08-18 18:00:17,504 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 18:00:17,505 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/sina1f.c [2020-08-18 18:00:17,512 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/92d2017b8/721a2349bced4e1e8fe5327ae97c3835/FLAG74dc14bb7 [2020-08-18 18:00:17,873 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/92d2017b8/721a2349bced4e1e8fe5327ae97c3835 [2020-08-18 18:00:17,881 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 18:00:17,883 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 18:00:17,885 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 18:00:17,886 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 18:00:17,889 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 18:00:17,890 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:00:17" (1/1) ... [2020-08-18 18:00:17,894 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e98fcf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:00:17, skipping insertion in model container [2020-08-18 18:00:17,894 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:00:17" (1/1) ... [2020-08-18 18:00:17,903 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 18:00:17,924 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 18:00:18,184 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:00:18,194 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 18:00:18,228 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:00:18,248 INFO L208 MainTranslator]: Completed translation [2020-08-18 18:00:18,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:00:18 WrapperNode [2020-08-18 18:00:18,250 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 18:00:18,251 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 18:00:18,251 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 18:00:18,251 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 18:00:18,381 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:00:18" (1/1) ... [2020-08-18 18:00:18,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:00:18" (1/1) ... [2020-08-18 18:00:18,390 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:00:18" (1/1) ... [2020-08-18 18:00:18,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:00:18" (1/1) ... [2020-08-18 18:00:18,406 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:00:18" (1/1) ... [2020-08-18 18:00:18,412 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:00:18" (1/1) ... [2020-08-18 18:00:18,424 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:00:18" (1/1) ... [2020-08-18 18:00:18,427 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 18:00:18,427 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 18:00:18,427 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 18:00:18,427 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 18:00:18,433 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:00:18" (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 18:00:18,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 18:00:18,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 18:00:18,495 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 18:00:18,496 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-18 18:00:18,496 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 18:00:18,496 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 18:00:18,496 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 18:00:18,496 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 18:00:18,496 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-18 18:00:18,497 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 18:00:18,497 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 18:00:18,497 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 18:00:18,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 18:00:18,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 18:00:18,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 18:00:18,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 18:00:18,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 18:00:18,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 18:00:18,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 18:00:18,793 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 18:00:18,793 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-08-18 18:00:18,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:00:18 BoogieIcfgContainer [2020-08-18 18:00:18,797 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 18:00:18,799 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 18:00:18,799 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 18:00:18,802 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 18:00:18,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 06:00:17" (1/3) ... [2020-08-18 18:00:18,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cf9ffe2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:00:18, skipping insertion in model container [2020-08-18 18:00:18,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:00:18" (2/3) ... [2020-08-18 18:00:18,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cf9ffe2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:00:18, skipping insertion in model container [2020-08-18 18:00:18,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:00:18" (3/3) ... [2020-08-18 18:00:18,806 INFO L109 eAbstractionObserver]: Analyzing ICFG sina1f.c [2020-08-18 18:00:18,817 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 18:00:18,824 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 18:00:18,840 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 18:00:18,864 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 18:00:18,865 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 18:00:18,865 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 18:00:18,865 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 18:00:18,865 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 18:00:18,866 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 18:00:18,866 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 18:00:18,866 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 18:00:18,893 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-08-18 18:00:18,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-18 18:00:18,900 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:00:18,901 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] [2020-08-18 18:00:18,901 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:00:18,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:00:18,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1314760119, now seen corresponding path program 1 times [2020-08-18 18:00:18,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:00:18,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605007578] [2020-08-18 18:00:18,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:00:19,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:00:19,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:00:19,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:00:19,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 18:00:19,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:00:19,150 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 18:00:19,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605007578] [2020-08-18 18:00:19,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:00:19,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 18:00:19,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408608064] [2020-08-18 18:00:19,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 18:00:19,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:00:19,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 18:00:19,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 18:00:19,184 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 3 states. [2020-08-18 18:00:19,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:00:19,303 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2020-08-18 18:00:19,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 18:00:19,305 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-08-18 18:00:19,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:00:19,314 INFO L225 Difference]: With dead ends: 58 [2020-08-18 18:00:19,314 INFO L226 Difference]: Without dead ends: 29 [2020-08-18 18:00:19,318 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 18:00:19,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-08-18 18:00:19,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-08-18 18:00:19,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-08-18 18:00:19,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-08-18 18:00:19,359 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 22 [2020-08-18 18:00:19,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:00:19,359 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-08-18 18:00:19,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 18:00:19,360 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-08-18 18:00:19,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-18 18:00:19,361 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:00:19,361 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] [2020-08-18 18:00:19,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 18:00:19,362 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:00:19,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:00:19,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1901566133, now seen corresponding path program 1 times [2020-08-18 18:00:19,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:00:19,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [953970873] [2020-08-18 18:00:19,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:00:19,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:00:19,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:00:19,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:00:19,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 18:00:19,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:00:19,488 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 18:00:19,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [953970873] [2020-08-18 18:00:19,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:00:19,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 18:00:19,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051140308] [2020-08-18 18:00:19,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 18:00:19,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:00:19,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 18:00:19,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 18:00:19,493 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 5 states. [2020-08-18 18:00:19,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:00:19,624 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2020-08-18 18:00:19,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 18:00:19,625 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-08-18 18:00:19,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:00:19,628 INFO L225 Difference]: With dead ends: 51 [2020-08-18 18:00:19,628 INFO L226 Difference]: Without dead ends: 37 [2020-08-18 18:00:19,629 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 18:00:19,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-08-18 18:00:19,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2020-08-18 18:00:19,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-08-18 18:00:19,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-08-18 18:00:19,643 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 22 [2020-08-18 18:00:19,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:00:19,643 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-08-18 18:00:19,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 18:00:19,644 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-08-18 18:00:19,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-18 18:00:19,645 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:00:19,645 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 18:00:19,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 18:00:19,645 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:00:19,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:00:19,646 INFO L82 PathProgramCache]: Analyzing trace with hash -69884793, now seen corresponding path program 1 times [2020-08-18 18:00:19,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:00:19,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [8814515] [2020-08-18 18:00:19,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:00:19,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 18:00:19,696 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 18:00:19,696 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 18:00:19,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 18:00:19,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 06:00:19 BoogieIcfgContainer [2020-08-18 18:00:19,718 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 18:00:19,721 INFO L168 Benchmark]: Toolchain (without parser) took 1837.49 ms. Allocated memory was 148.4 MB in the beginning and 207.1 MB in the end (delta: 58.7 MB). Free memory was 104.9 MB in the beginning and 112.2 MB in the end (delta: -7.2 MB). Peak memory consumption was 51.5 MB. Max. memory is 7.1 GB. [2020-08-18 18:00:19,722 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-18 18:00:19,723 INFO L168 Benchmark]: CACSL2BoogieTranslator took 365.84 ms. Allocated memory is still 148.4 MB. Free memory was 104.5 MB in the beginning and 94.2 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-08-18 18:00:19,724 INFO L168 Benchmark]: Boogie Preprocessor took 175.65 ms. Allocated memory was 148.4 MB in the beginning and 207.1 MB in the end (delta: 58.7 MB). Free memory was 94.2 MB in the beginning and 185.0 MB in the end (delta: -90.8 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-08-18 18:00:19,725 INFO L168 Benchmark]: RCFGBuilder took 370.37 ms. Allocated memory is still 207.1 MB. Free memory was 185.0 MB in the beginning and 167.3 MB in the end (delta: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 7.1 GB. [2020-08-18 18:00:19,726 INFO L168 Benchmark]: TraceAbstraction took 919.93 ms. Allocated memory is still 207.1 MB. Free memory was 167.3 MB in the beginning and 112.2 MB in the end (delta: 55.2 MB). Peak memory consumption was 55.2 MB. Max. memory is 7.1 GB. [2020-08-18 18:00:19,730 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 365.84 ms. Allocated memory is still 148.4 MB. Free memory was 104.5 MB in the beginning and 94.2 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 175.65 ms. Allocated memory was 148.4 MB in the beginning and 207.1 MB in the end (delta: 58.7 MB). Free memory was 94.2 MB in the beginning and 185.0 MB in the end (delta: -90.8 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 370.37 ms. Allocated memory is still 207.1 MB. Free memory was 185.0 MB in the beginning and 167.3 MB in the end (delta: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 919.93 ms. Allocated memory is still 207.1 MB. Free memory was 167.3 MB in the beginning and 112.2 MB in the end (delta: 55.2 MB). Peak memory consumption was 55.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] int sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] sum[0] = 1 [L30] i=0 [L30] COND TRUE i