/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/nec40.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 11:50:25,198 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 11:50:25,200 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 11:50:25,231 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 11:50:25,247 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 11:50:25,248 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 11:50:25,249 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 11:50:25,251 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 11:50:25,257 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 11:50:25,257 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 11:50:25,260 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 11:50:25,265 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 11:50:25,266 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 11:50:25,267 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 11:50:25,268 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 11:50:25,269 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 11:50:25,274 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 11:50:25,279 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 11:50:25,281 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 11:50:25,282 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 11:50:25,285 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 11:50:25,317 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 11:50:25,317 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 11:50:25,319 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-02 11:50:25,319 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-02 11:50:25,319 INFO L138 SettingsManager]: * Use SBE=true [2021-05-02 11:50:25,319 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 11:50:25,319 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 11:50:25,319 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 11:50:25,320 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 11:50:25,320 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 11:50:25,320 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 11:50:25,320 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 11:50:25,321 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 11:50:25,321 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 11:50:25,321 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 11:50:25,321 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 11:50:25,321 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 11:50:25,321 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 11:50:25,321 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 11:50:25,321 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 11:50:25,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 11:50:25,321 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 11:50:25,321 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-02 11:50:25,322 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-02 11:50:25,322 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 11:50:25,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-02 11:50:25,322 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 11:50:25,322 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-02 11:50:25,322 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 11:50:25,578 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 11:50:25,598 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 11:50:25,600 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 11:50:25,600 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 11:50:25,601 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 11:50:25,601 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/nec40.c [2021-05-02 11:50:25,645 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66c584d39/847886c937c64056960ca0b43f5868fd/FLAGa7ed501aa [2021-05-02 11:50:25,999 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 11:50:25,999 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/nec40.c [2021-05-02 11:50:26,003 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66c584d39/847886c937c64056960ca0b43f5868fd/FLAGa7ed501aa [2021-05-02 11:50:26,019 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66c584d39/847886c937c64056960ca0b43f5868fd [2021-05-02 11:50:26,021 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 11:50:26,023 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 11:50:26,025 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 11:50:26,025 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 11:50:26,028 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 11:50:26,028 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 11:50:26" (1/1) ... [2021-05-02 11:50:26,029 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2770ce29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:50:26, skipping insertion in model container [2021-05-02 11:50:26,029 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 11:50:26" (1/1) ... [2021-05-02 11:50:26,034 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 11:50:26,043 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 11:50:26,153 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/nec40.c[317,330] [2021-05-02 11:50:26,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 11:50:26,172 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 11:50:26,180 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/nec40.c[317,330] [2021-05-02 11:50:26,184 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 11:50:26,197 INFO L208 MainTranslator]: Completed translation [2021-05-02 11:50:26,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:50:26 WrapperNode [2021-05-02 11:50:26,197 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 11:50:26,198 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 11:50:26,198 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 11:50:26,198 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 11:50:26,226 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:50:26" (1/1) ... [2021-05-02 11:50:26,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:50:26" (1/1) ... [2021-05-02 11:50:26,236 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:50:26" (1/1) ... [2021-05-02 11:50:26,236 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:50:26" (1/1) ... [2021-05-02 11:50:26,259 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:50:26" (1/1) ... [2021-05-02 11:50:26,268 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:50:26" (1/1) ... [2021-05-02 11:50:26,269 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:50:26" (1/1) ... [2021-05-02 11:50:26,273 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 11:50:26,274 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 11:50:26,274 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 11:50:26,274 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 11:50:26,274 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:50:26" (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 11:50:26,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 11:50:26,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 11:50:26,350 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 11:50:26,350 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 11:50:26,350 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 11:50:26,350 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 11:50:26,350 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 11:50:26,351 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 11:50:26,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 11:50:26,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 11:50:26,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 11:50:26,351 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 11:50:26,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 11:50:26,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 11:50:26,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 11:50:26,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 11:50:26,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 11:50:26,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 11:50:26,584 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 11:50:26,585 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 11:50:26,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 11:50:26 BoogieIcfgContainer [2021-05-02 11:50:26,586 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 11:50:26,587 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 11:50:26,587 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 11:50:26,589 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 11:50:26,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 11:50:26" (1/3) ... [2021-05-02 11:50:26,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b090903 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 11:50:26, skipping insertion in model container [2021-05-02 11:50:26,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:50:26" (2/3) ... [2021-05-02 11:50:26,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b090903 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 11:50:26, skipping insertion in model container [2021-05-02 11:50:26,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 11:50:26" (3/3) ... [2021-05-02 11:50:26,590 INFO L111 eAbstractionObserver]: Analyzing ICFG nec40.c [2021-05-02 11:50:26,594 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-02 11:50:26,596 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 11:50:26,608 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 11:50:26,630 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 11:50:26,630 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 11:50:26,630 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-02 11:50:26,630 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 11:50:26,630 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 11:50:26,630 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 11:50:26,631 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 11:50:26,631 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 11:50:26,642 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 15 states have (on average 1.4) internal successors, (21), 17 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 11:50:26,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-02 11:50:26,645 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 11:50:26,645 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 11:50:26,645 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 11:50:26,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 11:50:26,649 INFO L82 PathProgramCache]: Analyzing trace with hash -723254197, now seen corresponding path program 1 times [2021-05-02 11:50:26,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 11:50:26,654 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247410136] [2021-05-02 11:50:26,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 11:50:26,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 11:50:26,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 11:50:26,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 11:50:26,910 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 11:50:26,911 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 11:50:26,911 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247410136] [2021-05-02 11:50:26,912 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247410136] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 11:50:26,912 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 11:50:26,912 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 11:50:26,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075463877] [2021-05-02 11:50:26,916 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 11:50:26,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 11:50:26,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 11:50:26,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 11:50:26,927 INFO L87 Difference]: Start difference. First operand has 23 states, 15 states have (on average 1.4) internal successors, (21), 17 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 11:50:26,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 11:50:26,991 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2021-05-02 11:50:26,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 11:50:26,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 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 11:50:26,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 11:50:26,997 INFO L225 Difference]: With dead ends: 38 [2021-05-02 11:50:26,997 INFO L226 Difference]: Without dead ends: 16 [2021-05-02 11:50:26,999 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 75.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 11:50:27,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-05-02 11:50:27,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-05-02 11:50:27,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 11:50:27,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-05-02 11:50:27,019 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2021-05-02 11:50:27,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 11:50:27,019 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-05-02 11:50:27,020 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 11:50:27,020 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-05-02 11:50:27,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-05-02 11:50:27,020 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 11:50:27,020 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 11:50:27,020 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 11:50:27,020 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 11:50:27,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 11:50:27,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1522809640, now seen corresponding path program 1 times [2021-05-02 11:50:27,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 11:50:27,021 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547463378] [2021-05-02 11:50:27,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 11:50:27,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 11:50:27,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 11:50:27,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 11:50:27,145 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 11:50:27,146 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 11:50:27,146 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547463378] [2021-05-02 11:50:27,146 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547463378] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 11:50:27,146 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 11:50:27,146 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-02 11:50:27,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131370938] [2021-05-02 11:50:27,147 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 11:50:27,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 11:50:27,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 11:50:27,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-05-02 11:50:27,148 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 11:50:27,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 11:50:27,231 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2021-05-02 11:50:27,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 11:50:27,232 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), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-05-02 11:50:27,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 11:50:27,233 INFO L225 Difference]: With dead ends: 26 [2021-05-02 11:50:27,233 INFO L226 Difference]: Without dead ends: 18 [2021-05-02 11:50:27,233 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 87.7ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-05-02 11:50:27,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-05-02 11:50:27,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-05-02 11:50:27,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 11:50:27,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-05-02 11:50:27,237 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2021-05-02 11:50:27,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 11:50:27,237 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-05-02 11:50:27,237 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), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 11:50:27,237 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-05-02 11:50:27,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-02 11:50:27,238 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 11:50:27,238 INFO L523 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 11:50:27,238 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 11:50:27,238 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 11:50:27,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 11:50:27,238 INFO L82 PathProgramCache]: Analyzing trace with hash -521364141, now seen corresponding path program 1 times [2021-05-02 11:50:27,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 11:50:27,239 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273848748] [2021-05-02 11:50:27,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 11:50:27,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 11:50:27,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 11:50:27,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 11:50:27,359 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 11:50:27,359 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 11:50:27,359 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273848748] [2021-05-02 11:50:27,359 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273848748] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 11:50:27,359 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 11:50:27,360 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-02 11:50:27,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064058322] [2021-05-02 11:50:27,360 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 11:50:27,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 11:50:27,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 11:50:27,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-02 11:50:27,361 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 11:50:27,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 11:50:27,423 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-05-02 11:50:27,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 11:50:27,423 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-05-02 11:50:27,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 11:50:27,423 INFO L225 Difference]: With dead ends: 18 [2021-05-02 11:50:27,423 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 11:50:27,423 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.4ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-05-02 11:50:27,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 11:50:27,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 11:50:27,424 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 11:50:27,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 11:50:27,424 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-05-02 11:50:27,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 11:50:27,424 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 11:50:27,424 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 11:50:27,424 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 11:50:27,424 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 11:50:27,424 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-02 11:50:27,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-02 11:50:27,564 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-05-02 11:50:27,565 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-05-02 11:50:27,565 INFO L198 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-05-02 11:50:27,565 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-05-02 11:50:27,565 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 11:50:27,565 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-05-02 11:50:27,565 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-05-02 11:50:27,565 INFO L194 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= (select |#memory_int| |~#x~0.base|) .cse0) (= .cse0 (select |#memory_int| |~#y~0.base|)))) [2021-05-02 11:50:27,565 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-02 11:50:27,565 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-05-02 11:50:27,565 INFO L198 CegarLoopUtils]: For program point L27(lines 27 28) no Hoare annotation was computed. [2021-05-02 11:50:27,565 INFO L198 CegarLoopUtils]: For program point mainEXIT(lines 16 31) no Hoare annotation was computed. [2021-05-02 11:50:27,566 INFO L198 CegarLoopUtils]: For program point mainFINAL(lines 16 31) no Hoare annotation was computed. [2021-05-02 11:50:27,566 INFO L194 CegarLoopUtils]: At program point mainENTRY(lines 16 31) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (or (not (= .cse0 (select |old(#memory_int)| |~#x~0.base|))) (not (= .cse0 (select |old(#memory_int)| |~#y~0.base|))) (and (= ~i~0 |old(~i~0)|) (= ~k~0 |old(~k~0)|) (= |#memory_int| |old(#memory_int)|)))) [2021-05-02 11:50:27,566 INFO L194 CegarLoopUtils]: At program point L28(line 28) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (or (not (= .cse0 (select |old(#memory_int)| |~#x~0.base|))) (not (= .cse0 (select |old(#memory_int)| |~#y~0.base|))))) [2021-05-02 11:50:27,566 INFO L198 CegarLoopUtils]: For program point L26(lines 26 28) no Hoare annotation was computed. [2021-05-02 11:50:27,566 INFO L198 CegarLoopUtils]: For program point L26-1(lines 26 28) no Hoare annotation was computed. [2021-05-02 11:50:27,566 INFO L198 CegarLoopUtils]: For program point L20-1(lines 20 23) no Hoare annotation was computed. [2021-05-02 11:50:27,566 INFO L194 CegarLoopUtils]: At program point L20-3(lines 20 23) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (or (and (= (select |#memory_int| |~#x~0.base|) .cse0) (= .cse0 (select |#memory_int| |~#y~0.base|))) (not (= .cse0 (select |old(#memory_int)| |~#x~0.base|))) (not (= .cse0 (select |old(#memory_int)| |~#y~0.base|))))) [2021-05-02 11:50:27,566 INFO L198 CegarLoopUtils]: For program point L20-4(lines 20 23) no Hoare annotation was computed. [2021-05-02 11:50:27,566 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2021-05-02 11:50:27,566 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 5 10) no Hoare annotation was computed. [2021-05-02 11:50:27,566 INFO L198 CegarLoopUtils]: For program point L7(line 7) no Hoare annotation was computed. [2021-05-02 11:50:27,566 INFO L198 CegarLoopUtils]: For program point L6(lines 6 8) no Hoare annotation was computed. [2021-05-02 11:50:27,566 INFO L198 CegarLoopUtils]: For program point L6-2(lines 5 10) no Hoare annotation was computed. [2021-05-02 11:50:27,567 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2021-05-02 11:50:27,571 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 11:50:27,590 INFO L168 Benchmark]: Toolchain (without parser) took 1566.84 ms. Allocated memory is still 183.5 MB. Free memory was 148.5 MB in the beginning and 125.0 MB in the end (delta: 23.5 MB). Peak memory consumption was 24.3 MB. Max. memory is 8.0 GB. [2021-05-02 11:50:27,590 INFO L168 Benchmark]: CDTParser took 0.08 ms. Allocated memory is still 183.5 MB. Free memory is still 165.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 11:50:27,590 INFO L168 Benchmark]: CACSL2BoogieTranslator took 172.20 ms. Allocated memory is still 183.5 MB. Free memory was 148.2 MB in the beginning and 138.6 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-05-02 11:50:27,591 INFO L168 Benchmark]: Boogie Preprocessor took 75.53 ms. Allocated memory is still 183.5 MB. Free memory was 138.6 MB in the beginning and 166.7 MB in the end (delta: -28.1 MB). Peak memory consumption was 2.5 MB. Max. memory is 8.0 GB. [2021-05-02 11:50:27,591 INFO L168 Benchmark]: RCFGBuilder took 312.02 ms. Allocated memory is still 183.5 MB. Free memory was 166.7 MB in the beginning and 151.0 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-05-02 11:50:27,591 INFO L168 Benchmark]: TraceAbstraction took 1002.09 ms. Allocated memory is still 183.5 MB. Free memory was 150.5 MB in the beginning and 125.0 MB in the end (delta: 25.5 MB). Peak memory consumption was 26.0 MB. Max. memory is 8.0 GB. [2021-05-02 11:50:27,593 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08 ms. Allocated memory is still 183.5 MB. Free memory is still 165.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 172.20 ms. Allocated memory is still 183.5 MB. Free memory was 148.2 MB in the beginning and 138.6 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 75.53 ms. Allocated memory is still 183.5 MB. Free memory was 138.6 MB in the beginning and 166.7 MB in the end (delta: -28.1 MB). Peak memory consumption was 2.5 MB. Max. memory is 8.0 GB. * RCFGBuilder took 312.02 ms. Allocated memory is still 183.5 MB. Free memory was 166.7 MB in the beginning and 151.0 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1002.09 ms. Allocated memory is still 183.5 MB. Free memory was 150.5 MB in the beginning and 125.0 MB in the end (delta: 25.5 MB). Peak memory consumption was 26.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: 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 5 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 796.4ms, OverallIterations: 3, TraceHistogramMax: 2, EmptinessCheckTime: 5.7ms, AutomataDifference: 231.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 139.3ms, InitialAbstractionConstructionTime: 8.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 40 SDtfs, 16 SDslu, 23 SDs, 0 SdLazy, 62 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 75.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 264.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 15.7ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 10 NumberOfFragments, 138 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 15.9ms HoareSimplificationTime, 7 FomulaSimplificationsInter, 57 FormulaSimplificationTreeSizeReductionInter, 100.5ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 21.9ms SsaConstructionTime, 68.1ms SatisfiabilityAnalysisTime, 369.2ms InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 43 ConstructedInterpolants, 0 QuantifiedInterpolants, 315 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...