/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/sum_2x3-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 22:24:16,805 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:24:16,808 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:24:16,845 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 22:24:16,846 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 22:24:16,847 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 22:24:16,849 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 22:24:16,852 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 22:24:16,854 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 22:24:16,856 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 22:24:16,857 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 22:24:16,859 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 22:24:16,859 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 22:24:16,861 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 22:24:16,862 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 22:24:16,864 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 22:24:16,865 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 22:24:16,866 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 22:24:16,868 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 22:24:16,881 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 22:24:16,888 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 22:24:16,890 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 22:24:16,892 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 22:24:16,893 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 22:24:16,900 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-06 22:24:16,917 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:24:16,918 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:24:16,919 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:24:16,921 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 [2020-11-06 22:24:16,982 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:24:16,982 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:24:16,984 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:24:16,985 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:24:16,985 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:24:16,985 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:24:16,985 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:24:16,986 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:24:16,986 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:24:16,986 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:24:16,987 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:24:16,987 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:24:16,988 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:24:16,988 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:24:16,988 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:24:16,988 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:24:16,988 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:24:16,989 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:24:16,989 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:24:16,989 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:24:16,989 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:24:16,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:24:16,990 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:24:16,990 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:24:16,990 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:24:16,990 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:24:16,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:24:16,991 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:24:16,991 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:24:16,991 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:24:17,469 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:24:17,506 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:24:17,509 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:24:17,511 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:24:17,511 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:24:17,513 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/sum_2x3-2.c [2020-11-06 22:24:17,597 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/547e72ae3/78c81b3dcb454c708a2a97b62489ae61/FLAGa982de789 [2020-11-06 22:24:18,204 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:24:18,205 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/sum_2x3-2.c [2020-11-06 22:24:18,213 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/547e72ae3/78c81b3dcb454c708a2a97b62489ae61/FLAGa982de789 [2020-11-06 22:24:18,595 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/547e72ae3/78c81b3dcb454c708a2a97b62489ae61 [2020-11-06 22:24:18,599 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:24:18,609 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:24:18,615 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:24:18,616 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:24:18,621 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:24:18,622 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:24:18" (1/1) ... [2020-11-06 22:24:18,632 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@475cbc45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:18, skipping insertion in model container [2020-11-06 22:24:18,633 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:24:18" (1/1) ... [2020-11-06 22:24:18,644 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:24:18,662 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:24:18,861 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:24:18,873 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:24:18,888 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:24:18,905 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:24:18,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:18 WrapperNode [2020-11-06 22:24:18,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:24:18,907 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:24:18,907 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:24:18,908 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:24:18,923 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:18" (1/1) ... [2020-11-06 22:24:18,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:18" (1/1) ... [2020-11-06 22:24:18,932 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:18" (1/1) ... [2020-11-06 22:24:18,932 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:18" (1/1) ... [2020-11-06 22:24:18,938 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:18" (1/1) ... [2020-11-06 22:24:18,940 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:18" (1/1) ... [2020-11-06 22:24:18,942 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:18" (1/1) ... [2020-11-06 22:24:18,944 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:24:18,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:24:18,945 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:24:18,945 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:24:18,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:18" (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 [2020-11-06 22:24:19,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:24:19,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:24:19,044 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:24:19,045 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-11-06 22:24:19,046 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:24:19,046 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:24:19,046 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:24:19,047 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:24:19,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:24:19,047 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-11-06 22:24:19,048 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:24:19,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:24:19,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:24:19,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:24:19,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:24:19,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:24:19,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:24:19,399 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:24:19,400 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-11-06 22:24:19,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:24:19 BoogieIcfgContainer [2020-11-06 22:24:19,402 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:24:19,404 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:24:19,404 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:24:19,409 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:24:19,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:24:18" (1/3) ... [2020-11-06 22:24:19,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ebe4197 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:24:19, skipping insertion in model container [2020-11-06 22:24:19,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:24:18" (2/3) ... [2020-11-06 22:24:19,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ebe4197 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:24:19, skipping insertion in model container [2020-11-06 22:24:19,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:24:19" (3/3) ... [2020-11-06 22:24:19,414 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_2x3-2.c [2020-11-06 22:24:19,437 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:24:19,442 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:24:19,462 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:24:19,507 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:24:19,508 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:24:19,508 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:24:19,508 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:24:19,508 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:24:19,508 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:24:19,509 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:24:19,509 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:24:19,555 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-11-06 22:24:19,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-06 22:24:19,593 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:24:19,594 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:24:19,594 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:24:19,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:24:19,602 INFO L82 PathProgramCache]: Analyzing trace with hash -2012080153, now seen corresponding path program 1 times [2020-11-06 22:24:19,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:24:19,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298030247] [2020-11-06 22:24:19,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:24:19,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:24:19,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:24:19,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:24:19,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-06 22:24:19,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:24:20,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:24:20,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298030247] [2020-11-06 22:24:20,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:24:20,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-06 22:24:20,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582310449] [2020-11-06 22:24:20,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-06 22:24:20,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:24:20,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-06 22:24:20,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-06 22:24:20,080 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 6 states. [2020-11-06 22:24:20,512 WARN L194 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2020-11-06 22:24:20,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:24:20,714 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2020-11-06 22:24:20,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-06 22:24:20,718 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-06 22:24:20,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:24:20,728 INFO L225 Difference]: With dead ends: 36 [2020-11-06 22:24:20,729 INFO L226 Difference]: Without dead ends: 20 [2020-11-06 22:24:20,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-11-06 22:24:20,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-11-06 22:24:20,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-11-06 22:24:20,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-06 22:24:20,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-11-06 22:24:20,792 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 15 [2020-11-06 22:24:20,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:24:20,793 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-11-06 22:24:20,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-06 22:24:20,793 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-11-06 22:24:20,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-06 22:24:20,795 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:24:20,796 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:24:20,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 22:24:20,796 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:24:20,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:24:20,797 INFO L82 PathProgramCache]: Analyzing trace with hash -292229313, now seen corresponding path program 1 times [2020-11-06 22:24:20,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:24:20,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454979587] [2020-11-06 22:24:20,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:24:20,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:24:20,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:24:20,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:24:20,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-06 22:24:20,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:24:20,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 22:24:20,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:24:20,973 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-06 22:24:20,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454979587] [2020-11-06 22:24:20,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777019904] [2020-11-06 22:24:20,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:24:21,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:24:21,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-06 22:24:21,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:24:21,176 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-06 22:24:21,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:24:21,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2020-11-06 22:24:21,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360313869] [2020-11-06 22:24:21,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-06 22:24:21,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:24:21,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-06 22:24:21,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-11-06 22:24:21,181 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 9 states. [2020-11-06 22:24:21,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:24:21,463 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2020-11-06 22:24:21,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-06 22:24:21,464 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-11-06 22:24:21,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:24:21,465 INFO L225 Difference]: With dead ends: 28 [2020-11-06 22:24:21,465 INFO L226 Difference]: Without dead ends: 23 [2020-11-06 22:24:21,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-11-06 22:24:21,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-06 22:24:21,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-06 22:24:21,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-06 22:24:21,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-11-06 22:24:21,476 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 21 [2020-11-06 22:24:21,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:24:21,477 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-11-06 22:24:21,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-06 22:24:21,477 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-11-06 22:24:21,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-06 22:24:21,478 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:24:21,479 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:24:21,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-06 22:24:21,694 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:24:21,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:24:21,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1887732007, now seen corresponding path program 2 times [2020-11-06 22:24:21,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:24:21,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204742930] [2020-11-06 22:24:21,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:24:21,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:24:21,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:24:21,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:24:21,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-06 22:24:21,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:24:21,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 22:24:21,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:24:22,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 22:24:22,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:24:22,091 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-06 22:24:22,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204742930] [2020-11-06 22:24:22,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431411463] [2020-11-06 22:24:22,092 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:24:22,150 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-06 22:24:22,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:24:22,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 33 conjunts are in the unsatisfiable core [2020-11-06 22:24:22,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:24:22,247 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-06 22:24:22,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:24:22,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 15 [2020-11-06 22:24:22,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36897480] [2020-11-06 22:24:22,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-06 22:24:22,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:24:22,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-06 22:24:22,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-11-06 22:24:22,250 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 15 states. [2020-11-06 22:24:23,062 WARN L194 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2020-11-06 22:24:23,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:24:23,208 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-11-06 22:24:23,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-06 22:24:23,208 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 27 [2020-11-06 22:24:23,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:24:23,210 INFO L225 Difference]: With dead ends: 31 [2020-11-06 22:24:23,210 INFO L226 Difference]: Without dead ends: 26 [2020-11-06 22:24:23,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 29 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=111, Invalid=489, Unknown=0, NotChecked=0, Total=600 [2020-11-06 22:24:23,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-06 22:24:23,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-11-06 22:24:23,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-06 22:24:23,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-11-06 22:24:23,220 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 27 [2020-11-06 22:24:23,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:24:23,221 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-11-06 22:24:23,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-06 22:24:23,221 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-11-06 22:24:23,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-06 22:24:23,222 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:24:23,223 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:24:23,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:24:23,424 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:24:23,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:24:23,425 INFO L82 PathProgramCache]: Analyzing trace with hash 779050623, now seen corresponding path program 3 times [2020-11-06 22:24:23,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:24:23,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372853916] [2020-11-06 22:24:23,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:24:23,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:24:23,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:24:23,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:24:23,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-06 22:24:23,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:24:23,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 22:24:23,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:24:23,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 22:24:23,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:24:23,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-06 22:24:23,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:24:23,613 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-11-06 22:24:23,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372853916] [2020-11-06 22:24:23,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834320306] [2020-11-06 22:24:23,614 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:24:23,685 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-11-06 22:24:23,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:24:23,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-06 22:24:23,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:24:23,762 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-11-06 22:24:23,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:24:23,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2020-11-06 22:24:23,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119304114] [2020-11-06 22:24:23,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-06 22:24:23,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:24:23,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-06 22:24:23,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-11-06 22:24:23,766 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 10 states. [2020-11-06 22:24:24,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:24:24,184 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-11-06 22:24:24,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-06 22:24:24,185 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2020-11-06 22:24:24,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:24:24,187 INFO L225 Difference]: With dead ends: 36 [2020-11-06 22:24:24,187 INFO L226 Difference]: Without dead ends: 0 [2020-11-06 22:24:24,188 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2020-11-06 22:24:24,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-06 22:24:24,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-06 22:24:24,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-06 22:24:24,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-06 22:24:24,190 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2020-11-06 22:24:24,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:24:24,191 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-06 22:24:24,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-06 22:24:24,192 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-06 22:24:24,192 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-06 22:24:24,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:24:24,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-06 22:24:24,630 INFO L266 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-11-06 22:24:24,630 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-11-06 22:24:24,630 INFO L266 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-11-06 22:24:24,631 INFO L266 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-06 22:24:24,631 INFO L266 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-11-06 22:24:24,631 INFO L262 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-11-06 22:24:24,631 INFO L266 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-11-06 22:24:24,631 INFO L266 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-06 22:24:24,631 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-06 22:24:24,632 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-06 22:24:24,632 INFO L266 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-06 22:24:24,632 INFO L266 CegarLoopResult]: For program point sumEXIT(lines 5 11) no Hoare annotation was computed. [2020-11-06 22:24:24,632 INFO L262 CegarLoopResult]: At program point L9(line 9) the Hoare annotation is: (and (= sum_~n |sum_#in~n|) (= sum_~m |sum_#in~m|) (<= 1 |sum_#in~n|)) [2020-11-06 22:24:24,632 INFO L266 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-11-06 22:24:24,632 INFO L266 CegarLoopResult]: For program point L6(lines 6 10) no Hoare annotation was computed. [2020-11-06 22:24:24,633 INFO L266 CegarLoopResult]: For program point sumFINAL(lines 5 11) no Hoare annotation was computed. [2020-11-06 22:24:24,633 INFO L269 CegarLoopResult]: At program point sumENTRY(lines 5 11) the Hoare annotation is: true [2020-11-06 22:24:24,633 INFO L269 CegarLoopResult]: At program point mainENTRY(lines 13 20) the Hoare annotation is: true [2020-11-06 22:24:24,633 INFO L266 CegarLoopResult]: For program point mainEXIT(lines 13 20) no Hoare annotation was computed. [2020-11-06 22:24:24,633 INFO L262 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: false [2020-11-06 22:24:24,633 INFO L266 CegarLoopResult]: For program point L17(lines 17 19) no Hoare annotation was computed. [2020-11-06 22:24:24,633 INFO L266 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-11-06 22:24:24,634 INFO L262 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (= main_~a~0 2) [2020-11-06 22:24:24,634 INFO L266 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-11-06 22:24:24,634 INFO L266 CegarLoopResult]: For program point L17-2(lines 13 20) no Hoare annotation was computed. [2020-11-06 22:24:24,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:24:24 BoogieIcfgContainer [2020-11-06 22:24:24,641 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 22:24:24,642 INFO L168 Benchmark]: Toolchain (without parser) took 6039.89 ms. Allocated memory was 151.0 MB in the beginning and 196.1 MB in the end (delta: 45.1 MB). Free memory was 126.1 MB in the beginning and 111.0 MB in the end (delta: 15.1 MB). Peak memory consumption was 60.8 MB. Max. memory is 8.0 GB. [2020-11-06 22:24:24,643 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 123.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:24:24,644 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.07 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 116.5 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-06 22:24:24,645 INFO L168 Benchmark]: Boogie Preprocessor took 36.65 ms. Allocated memory is still 151.0 MB. Free memory was 116.5 MB in the beginning and 115.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-06 22:24:24,646 INFO L168 Benchmark]: RCFGBuilder took 457.09 ms. Allocated memory is still 151.0 MB. Free memory was 115.2 MB in the beginning and 103.0 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-11-06 22:24:24,647 INFO L168 Benchmark]: TraceAbstraction took 5236.54 ms. Allocated memory was 151.0 MB in the beginning and 196.1 MB in the end (delta: 45.1 MB). Free memory was 102.6 MB in the beginning and 111.0 MB in the end (delta: -8.4 MB). Peak memory consumption was 37.7 MB. Max. memory is 8.0 GB. [2020-11-06 22:24:24,650 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 123.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 291.07 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 116.5 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 36.65 ms. Allocated memory is still 151.0 MB. Free memory was 116.5 MB in the beginning and 115.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 457.09 ms. Allocated memory is still 151.0 MB. Free memory was 115.2 MB in the beginning and 103.0 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5236.54 ms. Allocated memory was 151.0 MB in the beginning and 196.1 MB in the end (delta: 45.1 MB). Free memory was 102.6 MB in the beginning and 111.0 MB in the end (delta: -8.4 MB). Peak memory consumption was 37.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.9s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 56 SDtfs, 85 SDslu, 121 SDs, 0 SdLazy, 306 SolverSat, 65 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 159 GetRequests, 99 SyntacticMatches, 4 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 16 PreInvPairs, 16 NumberOfFragments, 50 HoareAnnotationTreeSize, 16 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 298 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 177 NumberOfCodeBlocks, 177 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 170 ConstructedInterpolants, 0 QuantifiedInterpolants, 16380 SizeOfPredicates, 15 NumberOfNonLiveVariables, 414 ConjunctsInSsa, 47 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 68/96 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...