/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/n.c40.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 11:50:11,959 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 11:50:11,961 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 11:50:11,992 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 11:50:12,008 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 11:50:12,009 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 11:50:12,010 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 11:50:12,011 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 11:50:12,013 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 11:50:12,014 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 11:50:12,015 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 11:50:12,020 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 11:50:12,021 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 11:50:12,022 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 11:50:12,023 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 11:50:12,024 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 11:50:12,029 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 11:50:12,036 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 11:50:12,047 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 11:50:12,047 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 11:50:12,050 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-05-02 11:50:12,078 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 11:50:12,078 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 11:50:12,081 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-02 11:50:12,081 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-02 11:50:12,081 INFO L138 SettingsManager]: * Use SBE=true [2021-05-02 11:50:12,081 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 11:50:12,081 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 11:50:12,081 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 11:50:12,081 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 11:50:12,081 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 11:50:12,082 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 11:50:12,082 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 11:50:12,082 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 11:50:12,082 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 11:50:12,082 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 11:50:12,082 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 11:50:12,083 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 11:50:12,083 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 11:50:12,083 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 11:50:12,083 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 11:50:12,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 11:50:12,083 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 11:50:12,083 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-02 11:50:12,083 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-02 11:50:12,084 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 11:50:12,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-02 11:50:12,084 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 11:50:12,084 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-02 11:50:12,084 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 11:50:12,330 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 11:50:12,363 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 11:50:12,364 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 11:50:12,365 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 11:50:12,365 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 11:50:12,366 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/n.c40.c [2021-05-02 11:50:12,410 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f2ed7110/d4bdea1b128441b18418c422a9810e2a/FLAG6f64025d1 [2021-05-02 11:50:12,718 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 11:50:12,718 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/n.c40.c [2021-05-02 11:50:12,721 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f2ed7110/d4bdea1b128441b18418c422a9810e2a/FLAG6f64025d1 [2021-05-02 11:50:13,161 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f2ed7110/d4bdea1b128441b18418c422a9810e2a [2021-05-02 11:50:13,176 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 11:50:13,178 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 11:50:13,181 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 11:50:13,181 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 11:50:13,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 11:50:13,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 11:50:13" (1/1) ... [2021-05-02 11:50:13,184 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dc124fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:50:13, skipping insertion in model container [2021-05-02 11:50:13,184 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 11:50:13" (1/1) ... [2021-05-02 11:50:13,189 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 11:50:13,209 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 11:50:13,316 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/n.c40.c[498,511] [2021-05-02 11:50:13,319 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 11:50:13,325 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 11:50:13,334 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/n.c40.c[498,511] [2021-05-02 11:50:13,335 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 11:50:13,355 INFO L208 MainTranslator]: Completed translation [2021-05-02 11:50:13,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:50:13 WrapperNode [2021-05-02 11:50:13,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 11:50:13,362 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 11:50:13,362 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 11:50:13,363 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 11:50:13,381 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:50:13" (1/1) ... [2021-05-02 11:50:13,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:50:13" (1/1) ... [2021-05-02 11:50:13,422 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:50:13" (1/1) ... [2021-05-02 11:50:13,423 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:50:13" (1/1) ... [2021-05-02 11:50:13,427 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:50:13" (1/1) ... [2021-05-02 11:50:13,429 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:50:13" (1/1) ... [2021-05-02 11:50:13,430 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:50:13" (1/1) ... [2021-05-02 11:50:13,431 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 11:50:13,431 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 11:50:13,431 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 11:50:13,431 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 11:50:13,432 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:50:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2021-05-02 11:50:13,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 11:50:13,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 11:50:13,499 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 11:50:13,499 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 11:50:13,499 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 11:50:13,499 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 11:50:13,499 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 11:50:13,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 11:50:13,499 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 11:50:13,499 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 11:50:13,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 11:50:13,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 11:50:13,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 11:50:13,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 11:50:13,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 11:50:13,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 11:50:13,706 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 11:50:13,707 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 11:50:13,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 11:50:13 BoogieIcfgContainer [2021-05-02 11:50:13,708 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 11:50:13,709 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 11:50:13,709 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 11:50:13,710 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 11:50:13,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 11:50:13" (1/3) ... [2021-05-02 11:50:13,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@94838d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 11:50:13, skipping insertion in model container [2021-05-02 11:50:13,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:50:13" (2/3) ... [2021-05-02 11:50:13,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@94838d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 11:50:13, skipping insertion in model container [2021-05-02 11:50:13,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 11:50:13" (3/3) ... [2021-05-02 11:50:13,712 INFO L111 eAbstractionObserver]: Analyzing ICFG n.c40.c [2021-05-02 11:50:13,716 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-02 11:50:13,718 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 11:50:13,728 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 11:50:13,743 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 11:50:13,744 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 11:50:13,744 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-02 11:50:13,744 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 11:50:13,744 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 11:50:13,744 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 11:50:13,744 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 11:50:13,744 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 11:50:13,756 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 11:50:13,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 11:50:13,761 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 11:50:13,761 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 11:50:13,761 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 11:50:13,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 11:50:13,766 INFO L82 PathProgramCache]: Analyzing trace with hash 486483065, now seen corresponding path program 1 times [2021-05-02 11:50:13,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 11:50:13,774 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066271524] [2021-05-02 11:50:13,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 11:50:13,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 11:50:13,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 11:50:13,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 11:50:13,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 11:50:13,980 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 11:50:13,980 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066271524] [2021-05-02 11:50:13,980 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066271524] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 11:50:13,981 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 11:50:13,981 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 11:50:13,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221973879] [2021-05-02 11:50:13,984 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 11:50:13,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 11:50:13,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 11:50:13,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 11:50:13,994 INFO L87 Difference]: Start difference. First operand has 18 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 11:50:14,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 11:50:14,037 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2021-05-02 11:50:14,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 11:50:14,038 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-05-02 11:50:14,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 11:50:14,043 INFO L225 Difference]: With dead ends: 28 [2021-05-02 11:50:14,043 INFO L226 Difference]: Without dead ends: 13 [2021-05-02 11:50:14,046 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 11:50:14,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-05-02 11:50:14,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-05-02 11:50:14,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 11:50:14,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-05-02 11:50:14,075 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2021-05-02 11:50:14,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 11:50:14,076 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-05-02 11:50:14,076 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 11:50:14,076 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-05-02 11:50:14,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-02 11:50:14,077 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 11:50:14,077 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 11:50:14,078 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 11:50:14,078 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 11:50:14,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 11:50:14,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1990035655, now seen corresponding path program 1 times [2021-05-02 11:50:14,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 11:50:14,080 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291869072] [2021-05-02 11:50:14,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 11:50:14,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 11:50:14,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 11:50:14,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 11:50:14,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 11:50:14,187 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 11:50:14,187 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291869072] [2021-05-02 11:50:14,187 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291869072] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 11:50:14,187 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 11:50:14,187 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 11:50:14,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249573075] [2021-05-02 11:50:14,188 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 11:50:14,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 11:50:14,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 11:50:14,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 11:50:14,189 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 11:50:14,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 11:50:14,273 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2021-05-02 11:50:14,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-02 11:50:14,274 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-05-02 11:50:14,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 11:50:14,275 INFO L225 Difference]: With dead ends: 20 [2021-05-02 11:50:14,275 INFO L226 Difference]: Without dead ends: 15 [2021-05-02 11:50:14,276 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 81.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-02 11:50:14,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-05-02 11:50:14,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-05-02 11:50:14,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 11:50:14,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-05-02 11:50:14,286 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2021-05-02 11:50:14,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 11:50:14,287 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-05-02 11:50:14,287 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 11:50:14,287 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-05-02 11:50:14,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-02 11:50:14,287 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 11:50:14,287 INFO L523 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 11:50:14,287 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 11:50:14,288 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 11:50:14,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 11:50:14,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1622298932, now seen corresponding path program 1 times [2021-05-02 11:50:14,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 11:50:14,289 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903307306] [2021-05-02 11:50:14,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 11:50:14,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 11:50:14,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 11:50:14,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 11:50:14,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 11:50:14,469 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 11:50:14,469 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903307306] [2021-05-02 11:50:14,469 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903307306] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 11:50:14,469 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 11:50:14,477 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-02 11:50:14,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72555494] [2021-05-02 11:50:14,478 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 11:50:14,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 11:50:14,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 11:50:14,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-02 11:50:14,480 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 11:50:14,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 11:50:14,579 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2021-05-02 11:50:14,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 11:50:14,580 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-05-02 11:50:14,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 11:50:14,580 INFO L225 Difference]: With dead ends: 15 [2021-05-02 11:50:14,580 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 11:50:14,581 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.8ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-05-02 11:50:14,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 11:50:14,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 11:50:14,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-02 11:50:14,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 11:50:14,581 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-05-02 11:50:14,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 11:50:14,582 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 11:50:14,582 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 11:50:14,582 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 11:50:14,582 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 11:50:14,582 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-02 11:50:14,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-02 11:50:14,717 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-05-02 11:50:14,717 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-05-02 11:50:14,717 INFO L198 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-05-02 11:50:14,717 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-05-02 11:50:14,718 INFO L194 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~j~0 |old(~j~0)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#memory_int| |old(#memory_int)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |~#x~0.base| |old(~#x~0.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |old(#valid)| |#valid|) (= |#t~string5.base| |old(#t~string5.base)|) (= |~#x~0.offset| |old(~#x~0.offset)|) (= |~#y~0.offset| |old(~#y~0.offset)|) (= ~i~0 |old(~i~0)|) (= ~k~0 |old(~k~0)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |~#y~0.base| |old(~#y~0.base)|)) [2021-05-02 11:50:14,718 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-05-02 11:50:14,718 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-05-02 11:50:14,718 INFO L194 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: (and (= (select |#memory_int| |~#x~0.base|) ((as const (Array Int Int)) 0)) (not (= |~#x~0.base| |~#y~0.base|)) (= ~i~0 0)) [2021-05-02 11:50:14,718 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-02 11:50:14,718 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-05-02 11:50:14,718 INFO L198 CegarLoopUtils]: For program point mainEXIT(lines 10 25) no Hoare annotation was computed. [2021-05-02 11:50:14,718 INFO L198 CegarLoopUtils]: For program point L21(lines 21 22) no Hoare annotation was computed. [2021-05-02 11:50:14,718 INFO L198 CegarLoopUtils]: For program point mainFINAL(lines 10 25) no Hoare annotation was computed. [2021-05-02 11:50:14,719 INFO L198 CegarLoopUtils]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 22) no Hoare annotation was computed. [2021-05-02 11:50:14,719 INFO L194 CegarLoopUtils]: At program point mainENTRY(lines 10 25) the Hoare annotation is: (or (= |~#x~0.base| |~#y~0.base|) (not (= |old(~i~0)| 0)) (and (= ~k~0 |old(~k~0)|) (= |#memory_int| |old(#memory_int)|) (= ~i~0 0)) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|)))) [2021-05-02 11:50:14,719 INFO L198 CegarLoopUtils]: For program point L22(line 22) no Hoare annotation was computed. [2021-05-02 11:50:14,719 INFO L198 CegarLoopUtils]: For program point L20(lines 20 22) no Hoare annotation was computed. [2021-05-02 11:50:14,719 INFO L198 CegarLoopUtils]: For program point L20-1(lines 20 22) no Hoare annotation was computed. [2021-05-02 11:50:14,719 INFO L198 CegarLoopUtils]: For program point L14-1(lines 14 17) no Hoare annotation was computed. [2021-05-02 11:50:14,719 INFO L194 CegarLoopUtils]: At program point L14-3(lines 14 17) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (or (= |~#x~0.base| |~#y~0.base|) (not (= |old(~i~0)| 0)) (not (= .cse0 (select |old(#memory_int)| |~#x~0.base|))) (and (= (select |#memory_int| |~#x~0.base|) .cse0) (= ~i~0 0)))) [2021-05-02 11:50:14,719 INFO L198 CegarLoopUtils]: For program point L14-4(lines 14 17) no Hoare annotation was computed. [2021-05-02 11:50:14,725 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalArgumentException: unknown symbol (const Int (Array Int Int)) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:240) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportResult(TraceAbstractionStarter.java:559) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:256) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:215) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-05-02 11:50:14,728 INFO L168 Benchmark]: Toolchain (without parser) took 1549.57 ms. Allocated memory is still 202.4 MB. Free memory was 166.1 MB in the beginning and 162.3 MB in the end (delta: 3.8 MB). Peak memory consumption was 99.9 MB. Max. memory is 8.0 GB. [2021-05-02 11:50:14,729 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 202.4 MB. Free memory is still 182.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 11:50:14,730 INFO L168 Benchmark]: CACSL2BoogieTranslator took 175.08 ms. Allocated memory is still 202.4 MB. Free memory was 165.9 MB in the beginning and 156.4 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-05-02 11:50:14,732 INFO L168 Benchmark]: Boogie Preprocessor took 68.56 ms. Allocated memory is still 202.4 MB. Free memory was 156.4 MB in the beginning and 185.0 MB in the end (delta: -28.7 MB). Peak memory consumption was 2.4 MB. Max. memory is 8.0 GB. [2021-05-02 11:50:14,733 INFO L168 Benchmark]: RCFGBuilder took 276.44 ms. Allocated memory is still 202.4 MB. Free memory was 184.9 MB in the beginning and 169.7 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-05-02 11:50:14,733 INFO L168 Benchmark]: TraceAbstraction took 1018.48 ms. Allocated memory is still 202.4 MB. Free memory was 169.1 MB in the beginning and 162.3 MB in the end (delta: 6.8 MB). Peak memory consumption was 103.8 MB. Max. memory is 8.0 GB. [2021-05-02 11:50:14,736 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 202.4 MB. Free memory is still 182.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 175.08 ms. Allocated memory is still 202.4 MB. Free memory was 165.9 MB in the beginning and 156.4 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 68.56 ms. Allocated memory is still 202.4 MB. Free memory was 156.4 MB in the beginning and 185.0 MB in the end (delta: -28.7 MB). Peak memory consumption was 2.4 MB. Max. memory is 8.0 GB. * RCFGBuilder took 276.44 ms. Allocated memory is still 202.4 MB. Free memory was 184.9 MB in the beginning and 169.7 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1018.48 ms. Allocated memory is still 202.4 MB. Free memory was 169.1 MB in the beginning and 162.3 MB in the end (delta: 6.8 MB). Peak memory consumption was 103.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 22]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 841.1ms, OverallIterations: 3, TraceHistogramMax: 2, EmptinessCheckTime: 10.5ms, AutomataDifference: 250.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 133.7ms, InitialAbstractionConstructionTime: 7.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 32 SDtfs, 6 SDslu, 13 SDs, 0 SdLazy, 42 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 79.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 229.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 30.7ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 6 NumberOfFragments, 120 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 20.6ms HoareSimplificationTime, 5 FomulaSimplificationsInter, 62 FormulaSimplificationTreeSizeReductionInter, 106.8ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 21.4ms SsaConstructionTime, 97.4ms SatisfiabilityAnalysisTime, 319.8ms InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 273 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ExceptionOrErrorResult: IllegalArgumentException: unknown symbol (const Int (Array Int Int)) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalArgumentException: unknown symbol (const Int (Array Int Int)): de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:240) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...