/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/brs3f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 13:42:10,810 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 13:42:10,814 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 13:42:10,845 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 13:42:10,845 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 13:42:10,853 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 13:42:10,857 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 13:42:10,861 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 13:42:10,864 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 13:42:10,867 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 13:42:10,869 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 13:42:10,870 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 13:42:10,870 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 13:42:10,873 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 13:42:10,876 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 13:42:10,878 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 13:42:10,880 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 13:42:10,881 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 13:42:10,883 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 13:42:10,891 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 13:42:10,894 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 13:42:10,895 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 13:42:10,896 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 13:42:10,897 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 13:42:10,909 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 13:42:10,920 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 13:42:10,921 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 13:42:10,922 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 13:42:10,923 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 13:42:10,928 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 13:42:10,928 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 13:42:10,929 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 13:42:10,929 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 13:42:10,930 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 13:42:10,931 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 13:42:10,931 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 13:42:10,933 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 [2020-09-04 13:42:10,979 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 13:42:10,979 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 13:42:10,981 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 13:42:10,981 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 13:42:10,981 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 13:42:10,981 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 13:42:10,982 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 13:42:10,982 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 13:42:10,982 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 13:42:10,982 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 13:42:10,983 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 13:42:10,983 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 13:42:10,983 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 13:42:10,984 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 13:42:10,984 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 13:42:10,984 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 13:42:10,984 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 13:42:10,985 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 13:42:10,985 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 13:42:10,985 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 13:42:10,986 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 13:42:10,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:42:10,986 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 13:42:10,986 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 13:42:10,986 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 13:42:10,987 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 13:42:10,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 13:42:10,987 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 13:42:10,987 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 13:42:10,987 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 13:42:11,434 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 13:42:11,454 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 13:42:11,460 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 13:42:11,463 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 13:42:11,463 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 13:42:11,465 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs3f.c [2020-09-04 13:42:11,542 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a9f1fe486/8a845f954b834c11aa70b2c364e0f4e7/FLAGc43c8c216 [2020-09-04 13:42:12,128 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 13:42:12,129 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/brs3f.c [2020-09-04 13:42:12,139 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a9f1fe486/8a845f954b834c11aa70b2c364e0f4e7/FLAGc43c8c216 [2020-09-04 13:42:12,457 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a9f1fe486/8a845f954b834c11aa70b2c364e0f4e7 [2020-09-04 13:42:12,471 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 13:42:12,473 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 13:42:12,474 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 13:42:12,475 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 13:42:12,479 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 13:42:12,481 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:42:12" (1/1) ... [2020-09-04 13:42:12,486 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e4e3fcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:12, skipping insertion in model container [2020-09-04 13:42:12,486 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:42:12" (1/1) ... [2020-09-04 13:42:12,497 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 13:42:12,527 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 13:42:12,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:42:12,789 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 13:42:12,812 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:42:12,833 INFO L208 MainTranslator]: Completed translation [2020-09-04 13:42:12,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:12 WrapperNode [2020-09-04 13:42:12,834 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 13:42:12,835 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 13:42:12,835 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 13:42:12,835 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 13:42:12,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:12" (1/1) ... [2020-09-04 13:42:12,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:12" (1/1) ... [2020-09-04 13:42:12,940 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:12" (1/1) ... [2020-09-04 13:42:12,941 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:12" (1/1) ... [2020-09-04 13:42:12,950 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:12" (1/1) ... [2020-09-04 13:42:12,957 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:12" (1/1) ... [2020-09-04 13:42:12,959 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:12" (1/1) ... [2020-09-04 13:42:12,962 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 13:42:12,962 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 13:42:12,962 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 13:42:12,963 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 13:42:12,964 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:12" (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 [2020-09-04 13:42:13,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 13:42:13,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 13:42:13,049 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 13:42:13,049 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 13:42:13,049 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 13:42:13,049 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 13:42:13,049 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 13:42:13,049 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 13:42:13,050 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 13:42:13,050 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 13:42:13,050 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 13:42:13,050 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 13:42:13,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 13:42:13,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 13:42:13,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 13:42:13,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 13:42:13,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 13:42:13,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 13:42:13,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 13:42:13,420 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 13:42:13,420 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-04 13:42:13,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:42:13 BoogieIcfgContainer [2020-09-04 13:42:13,425 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 13:42:13,426 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 13:42:13,426 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 13:42:13,430 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 13:42:13,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 01:42:12" (1/3) ... [2020-09-04 13:42:13,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46d3314f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:42:13, skipping insertion in model container [2020-09-04 13:42:13,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:12" (2/3) ... [2020-09-04 13:42:13,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46d3314f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:42:13, skipping insertion in model container [2020-09-04 13:42:13,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:42:13" (3/3) ... [2020-09-04 13:42:13,434 INFO L109 eAbstractionObserver]: Analyzing ICFG brs3f.c [2020-09-04 13:42:13,444 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 13:42:13,452 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 13:42:13,474 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 13:42:13,501 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 13:42:13,501 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 13:42:13,501 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 13:42:13,502 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 13:42:13,502 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 13:42:13,502 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 13:42:13,502 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 13:42:13,502 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 13:42:13,524 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-09-04 13:42:13,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-04 13:42:13,531 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:13,532 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] [2020-09-04 13:42:13,532 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:13,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:13,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1824292310, now seen corresponding path program 1 times [2020-09-04 13:42:13,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:13,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284350288] [2020-09-04 13:42:13,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:13,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:13,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:42:13,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:13,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 13:42:13,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:13,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:42:13,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284350288] [2020-09-04 13:42:13,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:42:13,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 13:42:13,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185554490] [2020-09-04 13:42:13,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 13:42:13,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:42:13,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 13:42:13,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:42:13,819 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2020-09-04 13:42:13,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:42:13,945 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2020-09-04 13:42:13,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 13:42:13,947 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-09-04 13:42:13,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:42:13,958 INFO L225 Difference]: With dead ends: 56 [2020-09-04 13:42:13,958 INFO L226 Difference]: Without dead ends: 26 [2020-09-04 13:42:13,962 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 [2020-09-04 13:42:13,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-09-04 13:42:14,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-09-04 13:42:14,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-09-04 13:42:14,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2020-09-04 13:42:14,007 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 21 [2020-09-04 13:42:14,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:42:14,008 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2020-09-04 13:42:14,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 13:42:14,008 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-09-04 13:42:14,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-04 13:42:14,009 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:14,009 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] [2020-09-04 13:42:14,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 13:42:14,010 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:14,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:14,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1767537087, now seen corresponding path program 1 times [2020-09-04 13:42:14,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:14,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612416670] [2020-09-04 13:42:14,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:14,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:14,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:42:14,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:14,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 13:42:14,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:14,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:42:14,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612416670] [2020-09-04 13:42:14,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:42:14,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 13:42:14,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55101976] [2020-09-04 13:42:14,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 13:42:14,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:42:14,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 13:42:14,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 13:42:14,189 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 5 states. [2020-09-04 13:42:14,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:42:14,339 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2020-09-04 13:42:14,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 13:42:14,340 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-04 13:42:14,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:42:14,341 INFO L225 Difference]: With dead ends: 45 [2020-09-04 13:42:14,341 INFO L226 Difference]: Without dead ends: 32 [2020-09-04 13:42:14,343 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 [2020-09-04 13:42:14,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-09-04 13:42:14,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-09-04 13:42:14,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-04 13:42:14,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-09-04 13:42:14,352 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 21 [2020-09-04 13:42:14,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:42:14,353 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-09-04 13:42:14,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 13:42:14,353 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-09-04 13:42:14,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-04 13:42:14,354 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:14,354 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] [2020-09-04 13:42:14,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 13:42:14,355 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:14,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:14,355 INFO L82 PathProgramCache]: Analyzing trace with hash -395878216, now seen corresponding path program 1 times [2020-09-04 13:42:14,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:14,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371372370] [2020-09-04 13:42:14,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:14,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:14,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:42:14,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:14,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 13:42:14,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:14,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-04 13:42:14,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371372370] [2020-09-04 13:42:14,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:42:14,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 13:42:14,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657563181] [2020-09-04 13:42:14,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 13:42:14,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:42:14,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 13:42:14,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-04 13:42:14,572 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 8 states. [2020-09-04 13:42:14,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:42:14,818 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2020-09-04 13:42:14,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-04 13:42:14,819 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-09-04 13:42:14,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:42:14,820 INFO L225 Difference]: With dead ends: 39 [2020-09-04 13:42:14,820 INFO L226 Difference]: Without dead ends: 33 [2020-09-04 13:42:14,821 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-09-04 13:42:14,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-04 13:42:14,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-09-04 13:42:14,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-04 13:42:14,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-09-04 13:42:14,829 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 27 [2020-09-04 13:42:14,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:42:14,830 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-09-04 13:42:14,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 13:42:14,830 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-09-04 13:42:14,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-04 13:42:14,831 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:14,832 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 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] [2020-09-04 13:42:14,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 13:42:14,832 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:14,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:14,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1239476407, now seen corresponding path program 1 times [2020-09-04 13:42:14,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:14,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33751243] [2020-09-04 13:42:14,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:14,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:14,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:42:14,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:14,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 13:42:14,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:15,001 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:42:15,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33751243] [2020-09-04 13:42:15,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157810281] [2020-09-04 13:42:15,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:42:15,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:15,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjunts are in the unsatisfiable core [2020-09-04 13:42:15,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:42:15,179 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:42:15,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:42:15,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2020-09-04 13:42:15,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694110972] [2020-09-04 13:42:15,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 13:42:15,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:42:15,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 13:42:15,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-09-04 13:42:15,182 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 11 states. [2020-09-04 13:42:15,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:42:15,369 INFO L93 Difference]: Finished difference Result 55 states and 62 transitions. [2020-09-04 13:42:15,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 13:42:15,370 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2020-09-04 13:42:15,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:42:15,371 INFO L225 Difference]: With dead ends: 55 [2020-09-04 13:42:15,371 INFO L226 Difference]: Without dead ends: 39 [2020-09-04 13:42:15,372 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-09-04 13:42:15,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-09-04 13:42:15,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2020-09-04 13:42:15,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-04 13:42:15,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-09-04 13:42:15,380 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 30 [2020-09-04 13:42:15,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:42:15,380 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-09-04 13:42:15,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 13:42:15,381 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-09-04 13:42:15,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-04 13:42:15,382 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:15,382 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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] [2020-09-04 13:42:15,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:42:15,596 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:15,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:15,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1492634651, now seen corresponding path program 1 times [2020-09-04 13:42:15,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:15,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767638370] [2020-09-04 13:42:15,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:15,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 13:42:15,684 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 13:42:15,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 13:42:15,758 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 13:42:15,804 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-04 13:42:15,805 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 13:42:15,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 13:42:15,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 01:42:15 BoogieIcfgContainer [2020-09-04 13:42:15,892 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 13:42:15,896 INFO L168 Benchmark]: Toolchain (without parser) took 3421.54 ms. Allocated memory was 140.5 MB in the beginning and 235.4 MB in the end (delta: 94.9 MB). Free memory was 101.9 MB in the beginning and 125.8 MB in the end (delta: -24.0 MB). Peak memory consumption was 70.9 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:15,898 INFO L168 Benchmark]: CDTParser took 0.50 ms. Allocated memory is still 140.5 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-04 13:42:15,900 INFO L168 Benchmark]: CACSL2BoogieTranslator took 360.21 ms. Allocated memory is still 140.5 MB. Free memory was 101.7 MB in the beginning and 91.2 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:15,901 INFO L168 Benchmark]: Boogie Preprocessor took 126.89 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 91.2 MB in the beginning and 181.7 MB in the end (delta: -90.6 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:15,902 INFO L168 Benchmark]: RCFGBuilder took 462.64 ms. Allocated memory is still 203.9 MB. Free memory was 181.7 MB in the beginning and 164.4 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:15,903 INFO L168 Benchmark]: TraceAbstraction took 2465.98 ms. Allocated memory was 203.9 MB in the beginning and 235.4 MB in the end (delta: 31.5 MB). Free memory was 163.8 MB in the beginning and 125.8 MB in the end (delta: 38.0 MB). Peak memory consumption was 69.4 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:15,906 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50 ms. Allocated memory is still 140.5 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 360.21 ms. Allocated memory is still 140.5 MB. Free memory was 101.7 MB in the beginning and 91.2 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 126.89 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 91.2 MB in the beginning and 181.7 MB in the end (delta: -90.6 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 462.64 ms. Allocated memory is still 203.9 MB. Free memory was 181.7 MB in the beginning and 164.4 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2465.98 ms. Allocated memory was 203.9 MB in the beginning and 235.4 MB in the end (delta: 31.5 MB). Free memory was 163.8 MB in the beginning and 125.8 MB in the end (delta: 38.0 MB). Peak memory consumption was 69.4 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; VAL [\old(N)=32, N=0] [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) VAL [\old(N)=0, N=2] [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=2] [L11] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=2] [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=2] [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=2, sum={5:0}] [L29] COND TRUE i