/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:37:16,180 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:37:16,183 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:37:16,217 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:37:16,218 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:37:16,219 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:37:16,221 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:37:16,223 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:37:16,225 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:37:16,226 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:37:16,227 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:37:16,229 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 05:37:16,229 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:37:16,230 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:37:16,232 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:37:16,233 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:37:16,234 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:37:16,235 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:37:16,237 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:37:16,253 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:37:16,258 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:37:16,260 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:37:16,262 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:37:16,266 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:37:16,274 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:37:16,281 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 05:37:16,284 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 05:37:16,285 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 05:37:16,285 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 05:37:16,287 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 05:37:16,287 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 05:37:16,288 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 05:37:16,289 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 05:37:16,289 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:37:16,290 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:37:16,291 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:37:16,293 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:37:16,347 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:37:16,347 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:37:16,351 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:37:16,352 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:37:16,352 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:37:16,352 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:37:16,352 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:37:16,352 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:37:16,353 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:37:16,353 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:37:16,355 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:37:16,355 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:37:16,355 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:37:16,355 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:37:16,355 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:37:16,356 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:37:16,356 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:37:16,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:37:16,356 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:37:16,356 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:37:16,357 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:37:16,357 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:37:16,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:37:16,357 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:37:16,357 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:37:16,358 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:37:16,745 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:37:16,777 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:37:16,780 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:37:16,781 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:37:16,782 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:37:16,783 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound1.c [2020-12-22 05:37:16,871 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/100b47a2c/37382756d9874b80aa9458dd3275b731/FLAG2a1f11c04 [2020-12-22 05:37:17,522 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:37:17,522 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound1.c [2020-12-22 05:37:17,532 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/100b47a2c/37382756d9874b80aa9458dd3275b731/FLAG2a1f11c04 [2020-12-22 05:37:17,870 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/100b47a2c/37382756d9874b80aa9458dd3275b731 [2020-12-22 05:37:17,873 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:37:17,875 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:37:17,877 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:37:17,877 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:37:17,881 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:37:17,882 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:37:17" (1/1) ... [2020-12-22 05:37:17,883 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a90ce4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:37:17, skipping insertion in model container [2020-12-22 05:37:17,883 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:37:17" (1/1) ... [2020-12-22 05:37:17,892 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:37:17,908 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:37:18,063 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound1.c[524,537] [2020-12-22 05:37:18,084 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:37:18,094 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:37:18,109 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound1.c[524,537] [2020-12-22 05:37:18,119 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:37:18,138 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:37:18,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:37:18 WrapperNode [2020-12-22 05:37:18,139 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:37:18,142 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:37:18,142 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:37:18,143 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:37:18,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:37:18" (1/1) ... [2020-12-22 05:37:18,176 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:37:18" (1/1) ... [2020-12-22 05:37:18,213 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:37:18,216 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:37:18,217 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:37:18,217 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:37:18,229 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:37:18" (1/1) ... [2020-12-22 05:37:18,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:37:18" (1/1) ... [2020-12-22 05:37:18,233 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:37:18" (1/1) ... [2020-12-22 05:37:18,233 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:37:18" (1/1) ... [2020-12-22 05:37:18,240 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:37:18" (1/1) ... [2020-12-22 05:37:18,251 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:37:18" (1/1) ... [2020-12-22 05:37:18,254 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:37:18" (1/1) ... [2020-12-22 05:37:18,262 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:37:18,266 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:37:18,267 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:37:18,267 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:37:18,268 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:37:18" (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 [2020-12-22 05:37:18,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:37:18,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:37:18,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:37:18,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:37:18,895 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:37:18,895 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2020-12-22 05:37:18,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:37:18 BoogieIcfgContainer [2020-12-22 05:37:18,901 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:37:18,940 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:37:18,940 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:37:18,945 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:37:18,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:37:17" (1/3) ... [2020-12-22 05:37:18,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ede9e71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:37:18, skipping insertion in model container [2020-12-22 05:37:18,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:37:18" (2/3) ... [2020-12-22 05:37:18,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ede9e71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:37:18, skipping insertion in model container [2020-12-22 05:37:18,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:37:18" (3/3) ... [2020-12-22 05:37:18,949 INFO L111 eAbstractionObserver]: Analyzing ICFG prod4br-ll_valuebound1.c [2020-12-22 05:37:18,956 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:37:18,960 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-12-22 05:37:19,006 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-22 05:37:19,052 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:37:19,052 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:37:19,052 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:37:19,053 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:37:19,053 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:37:19,054 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:37:19,054 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:37:19,054 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:37:19,073 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-12-22 05:37:19,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 05:37:19,079 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:37:19,080 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:37:19,081 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:37:19,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:37:19,087 INFO L82 PathProgramCache]: Analyzing trace with hash 330581779, now seen corresponding path program 1 times [2020-12-22 05:37:19,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:37:19,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913757163] [2020-12-22 05:37:19,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:37:19,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:37:19,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:37:19,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913757163] [2020-12-22 05:37:19,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:37:19,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:37:19,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190694443] [2020-12-22 05:37:19,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 05:37:19,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:37:19,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 05:37:19,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:37:19,273 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2020-12-22 05:37:19,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:37:19,295 INFO L93 Difference]: Finished difference Result 53 states and 74 transitions. [2020-12-22 05:37:19,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 05:37:19,296 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-22 05:37:19,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:37:19,306 INFO L225 Difference]: With dead ends: 53 [2020-12-22 05:37:19,306 INFO L226 Difference]: Without dead ends: 24 [2020-12-22 05:37:19,309 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:37:19,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-12-22 05:37:19,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-12-22 05:37:19,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-12-22 05:37:19,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-12-22 05:37:19,346 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 11 [2020-12-22 05:37:19,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:37:19,347 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-12-22 05:37:19,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 05:37:19,347 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-12-22 05:37:19,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 05:37:19,348 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:37:19,348 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:37:19,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:37:19,349 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:37:19,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:37:19,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1507472743, now seen corresponding path program 1 times [2020-12-22 05:37:19,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:37:19,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060373062] [2020-12-22 05:37:19,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:37:19,384 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:37:19,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [370311884] [2020-12-22 05:37:19,385 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 [2020-12-22 05:37:19,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:37:19,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-22 05:37:19,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:37:19,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:37:19,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060373062] [2020-12-22 05:37:19,807 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:37:19,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370311884] [2020-12-22 05:37:19,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:37:19,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 05:37:19,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991713843] [2020-12-22 05:37:19,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 05:37:19,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:37:19,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 05:37:19,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:37:19,811 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 10 states. [2020-12-22 05:37:20,126 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 21 [2020-12-22 05:37:20,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:37:20,395 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2020-12-22 05:37:20,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 05:37:20,396 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 11 [2020-12-22 05:37:20,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:37:20,398 INFO L225 Difference]: With dead ends: 55 [2020-12-22 05:37:20,398 INFO L226 Difference]: Without dead ends: 39 [2020-12-22 05:37:20,402 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2020-12-22 05:37:20,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-22 05:37:20,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 29. [2020-12-22 05:37:20,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-22 05:37:20,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-12-22 05:37:20,417 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 11 [2020-12-22 05:37:20,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:37:20,418 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-12-22 05:37:20,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 05:37:20,419 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-12-22 05:37:20,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 05:37:20,420 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:37:20,420 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:37:20,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-22 05:37:20,635 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:37:20,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:37:20,637 INFO L82 PathProgramCache]: Analyzing trace with hash -937517175, now seen corresponding path program 1 times [2020-12-22 05:37:20,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:37:20,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16201504] [2020-12-22 05:37:20,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:37:20,655 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:37:20,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1866108805] [2020-12-22 05:37:20,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-12-22 05:37:20,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:37:20,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 30 conjunts are in the unsatisfiable core [2020-12-22 05:37:20,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:37:20,864 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 05:37:21,122 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2020-12-22 05:37:21,226 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 05:37:21,228 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 05:37:21,233 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 05:37:21,240 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 05:37:21,244 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 05:37:21,247 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 05:37:21,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:37:21,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16201504] [2020-12-22 05:37:21,325 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:37:21,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866108805] [2020-12-22 05:37:21,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:37:21,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-12-22 05:37:21,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418808947] [2020-12-22 05:37:21,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 05:37:21,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:37:21,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 05:37:21,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:37:21,328 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 13 states. [2020-12-22 05:37:21,685 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 37 [2020-12-22 05:37:22,004 WARN L197 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 47 [2020-12-22 05:37:22,252 WARN L197 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 38 [2020-12-22 05:37:22,466 WARN L197 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 24 [2020-12-22 05:37:22,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:37:22,893 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2020-12-22 05:37:22,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 05:37:22,894 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 14 [2020-12-22 05:37:22,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:37:22,898 INFO L225 Difference]: With dead ends: 39 [2020-12-22 05:37:22,898 INFO L226 Difference]: Without dead ends: 31 [2020-12-22 05:37:22,899 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=140, Invalid=280, Unknown=0, NotChecked=0, Total=420 [2020-12-22 05:37:22,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-12-22 05:37:22,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2020-12-22 05:37:22,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-22 05:37:22,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-12-22 05:37:22,911 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 14 [2020-12-22 05:37:22,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:37:22,911 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-12-22 05:37:22,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 05:37:22,912 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-12-22 05:37:22,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 05:37:22,912 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:37:22,913 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:37:23,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:37:23,124 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:37:23,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:37:23,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1931404169, now seen corresponding path program 1 times [2020-12-22 05:37:23,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:37:23,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80468383] [2020-12-22 05:37:23,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:37:23,144 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:37:23,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1088465819] [2020-12-22 05:37:23,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-12-22 05:37:23,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:37:23,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 05:37:23,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:37:23,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:37:23,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80468383] [2020-12-22 05:37:23,355 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:37:23,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088465819] [2020-12-22 05:37:23,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:37:23,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:37:23,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083892882] [2020-12-22 05:37:23,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:37:23,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:37:23,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:37:23,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:37:23,357 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 6 states. [2020-12-22 05:37:23,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:37:23,478 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2020-12-22 05:37:23,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:37:23,480 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-12-22 05:37:23,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:37:23,482 INFO L225 Difference]: With dead ends: 45 [2020-12-22 05:37:23,482 INFO L226 Difference]: Without dead ends: 29 [2020-12-22 05:37:23,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:37:23,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-22 05:37:23,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-12-22 05:37:23,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-22 05:37:23,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2020-12-22 05:37:23,495 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 17 [2020-12-22 05:37:23,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:37:23,498 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2020-12-22 05:37:23,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:37:23,498 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2020-12-22 05:37:23,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 05:37:23,499 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:37:23,499 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:37:23,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:37:23,716 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:37:23,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:37:23,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1931463751, now seen corresponding path program 1 times [2020-12-22 05:37:23,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:37:23,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958955942] [2020-12-22 05:37:23,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:37:23,733 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:37:23,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [699879119] [2020-12-22 05:37:23,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:37:23,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:37:23,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 40 conjunts are in the unsatisfiable core [2020-12-22 05:37:23,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:37:24,299 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:37:24,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958955942] [2020-12-22 05:37:24,300 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:37:24,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699879119] [2020-12-22 05:37:24,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:37:24,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-12-22 05:37:24,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416356291] [2020-12-22 05:37:24,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-22 05:37:24,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:37:24,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-22 05:37:24,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-12-22 05:37:24,302 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 14 states. [2020-12-22 05:37:24,596 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 24 [2020-12-22 05:37:24,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:37:24,960 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2020-12-22 05:37:24,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 05:37:24,960 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2020-12-22 05:37:24,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:37:24,961 INFO L225 Difference]: With dead ends: 37 [2020-12-22 05:37:24,961 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 05:37:24,963 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=131, Invalid=289, Unknown=0, NotChecked=0, Total=420 [2020-12-22 05:37:24,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 05:37:24,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 05:37:24,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 05:37:24,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 05:37:24,967 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-12-22 05:37:24,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:37:24,967 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 05:37:24,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-22 05:37:24,968 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 05:37:24,968 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 05:37:25,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:37:25,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-22 05:37:25,468 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 38 [2020-12-22 05:37:25,602 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2020-12-22 05:37:25,789 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 38 [2020-12-22 05:37:25,794 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-22 05:37:25,794 INFO L189 CegarLoopUtils]: For program point L44(lines 44 54) no Hoare annotation was computed. [2020-12-22 05:37:25,794 INFO L189 CegarLoopUtils]: For program point L40(lines 40 54) no Hoare annotation was computed. [2020-12-22 05:37:25,794 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-22 05:37:25,794 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-22 05:37:25,794 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-22 05:37:25,795 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-22 05:37:25,795 INFO L189 CegarLoopUtils]: For program point L12(lines 12 15) no Hoare annotation was computed. [2020-12-22 05:37:25,795 INFO L185 CegarLoopUtils]: At program point L12-2(lines 37 38) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start_main_~y~0)) (.cse4 (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0)) (.cse1 (<= ULTIMATE.start_main_~y~0 1)) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (= ULTIMATE.start_main_~p~0 1)) (.cse5 (<= 0 ULTIMATE.start_main_~a~0)) (.cse6 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and (<= ULTIMATE.start_main_~x~0 1) .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~a~0 1)) .cse3 (= (+ (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~q~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~y~0)) (+ (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~p~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~p~0 .cse4)) .cse5 .cse6 (= ULTIMATE.start_main_~y~0 (+ ULTIMATE.start_main_~b~0 1))) (and .cse0 (= .cse4 (+ (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~q~0)) .cse1 .cse2 .cse3 .cse5 (= ULTIMATE.start_main_~q~0 0) .cse6 (<= ULTIMATE.start_main_~a~0 1) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)))) [2020-12-22 05:37:25,795 INFO L189 CegarLoopUtils]: For program point L12-3(lines 12 15) no Hoare annotation was computed. [2020-12-22 05:37:25,795 INFO L189 CegarLoopUtils]: For program point L8(lines 8 10) no Hoare annotation was computed. [2020-12-22 05:37:25,796 INFO L189 CegarLoopUtils]: For program point L8-1(lines 8 10) no Hoare annotation was computed. [2020-12-22 05:37:25,796 INFO L185 CegarLoopUtils]: At program point L12-5(lines 11 17) the Hoare annotation is: (let ((.cse3 (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0)) (.cse0 (<= 1 ULTIMATE.start_main_~y~0)) (.cse1 (<= ULTIMATE.start_main_~y~0 1)) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse4 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and (<= ULTIMATE.start_main_~x~0 1) .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~a~0 1)) (= ULTIMATE.start_main_~p~0 1) (= (+ (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~q~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~y~0)) (+ (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~p~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~p~0 .cse3)) (<= 0 ULTIMATE.start_main_~a~0) .cse4 (= ULTIMATE.start_main_~y~0 (+ ULTIMATE.start_main_~b~0 1))) (and (= ULTIMATE.start_main_~q~0 .cse3) (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~b~0) (<= 1 ULTIMATE.start_main_~p~0) (<= ULTIMATE.start_main_~q~0 0) .cse0 .cse1 .cse2 (<= 0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~a~0 0) .cse4))) [2020-12-22 05:37:25,796 INFO L189 CegarLoopUtils]: For program point L8-2(lines 8 10) no Hoare annotation was computed. [2020-12-22 05:37:25,796 INFO L189 CegarLoopUtils]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2020-12-22 05:37:25,796 INFO L192 CegarLoopUtils]: At program point L12-8(lines 11 17) the Hoare annotation is: true [2020-12-22 05:37:25,796 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-22 05:37:25,796 INFO L189 CegarLoopUtils]: For program point L13(lines 13 14) no Hoare annotation was computed. [2020-12-22 05:37:25,797 INFO L189 CegarLoopUtils]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2020-12-22 05:37:25,797 INFO L189 CegarLoopUtils]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2020-12-22 05:37:25,797 INFO L189 CegarLoopUtils]: For program point L9(line 9) no Hoare annotation was computed. [2020-12-22 05:37:25,797 INFO L189 CegarLoopUtils]: For program point L9-2(line 9) no Hoare annotation was computed. [2020-12-22 05:37:25,797 INFO L189 CegarLoopUtils]: For program point L9-4(line 9) no Hoare annotation was computed. [2020-12-22 05:37:25,797 INFO L189 CegarLoopUtils]: For program point L34-2(lines 34 55) no Hoare annotation was computed. [2020-12-22 05:37:25,798 INFO L192 CegarLoopUtils]: At program point L59(lines 19 60) the Hoare annotation is: true [2020-12-22 05:37:25,798 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-22 05:37:25,798 INFO L189 CegarLoopUtils]: For program point L47(lines 47 54) no Hoare annotation was computed. [2020-12-22 05:37:25,799 INFO L185 CegarLoopUtils]: At program point L47-2(lines 34 55) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start_main_~y~0)) (.cse2 (<= ULTIMATE.start_main_~y~0 1)) (.cse3 (= ULTIMATE.start_main_~p~0 1)) (.cse1 (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0)) (.cse4 (<= 0 ULTIMATE.start_main_~a~0)) (.cse5 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and .cse0 (= .cse1 (+ (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~q~0)) .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~q~0 0) .cse5 (<= ULTIMATE.start_main_~a~0 1) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and (<= ULTIMATE.start_main_~x~0 1) .cse0 .cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~a~0 1)) .cse3 (= (+ (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~q~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~y~0)) (+ (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~p~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~p~0 .cse1)) .cse4 .cse5 (= ULTIMATE.start_main_~y~0 (+ ULTIMATE.start_main_~b~0 1))))) [2020-12-22 05:37:25,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 05:37:25 BoogieIcfgContainer [2020-12-22 05:37:25,819 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 05:37:25,820 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 05:37:25,820 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 05:37:25,820 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 05:37:25,820 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:37:18" (3/4) ... [2020-12-22 05:37:25,824 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 05:37:25,835 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-12-22 05:37:25,836 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-22 05:37:25,836 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 05:37:25,836 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 05:37:25,910 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/prod4br-ll_valuebound1.c-witness.graphml [2020-12-22 05:37:25,910 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 05:37:25,912 INFO L168 Benchmark]: Toolchain (without parser) took 8036.02 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 125.9 MB in the beginning and 197.7 MB in the end (delta: -71.8 MB). Peak memory consumption was 119.2 MB. Max. memory is 8.0 GB. [2020-12-22 05:37:25,912 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 123.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:37:25,913 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.36 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 115.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-22 05:37:25,913 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.87 ms. Allocated memory is still 151.0 MB. Free memory was 115.5 MB in the beginning and 113.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 05:37:25,914 INFO L168 Benchmark]: Boogie Preprocessor took 46.05 ms. Allocated memory is still 151.0 MB. Free memory was 113.8 MB in the beginning and 112.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:37:25,915 INFO L168 Benchmark]: RCFGBuilder took 634.65 ms. Allocated memory is still 151.0 MB. Free memory was 112.6 MB in the beginning and 97.3 MB in the end (delta: 15.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-12-22 05:37:25,916 INFO L168 Benchmark]: TraceAbstraction took 6879.09 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 133.4 MB in the beginning and 76.6 MB in the end (delta: 56.8 MB). Peak memory consumption was 123.4 MB. Max. memory is 8.0 GB. [2020-12-22 05:37:25,916 INFO L168 Benchmark]: Witness Printer took 90.52 ms. Allocated memory is still 218.1 MB. Free memory was 76.6 MB in the beginning and 197.7 MB in the end (delta: -121.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 05:37:25,920 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 123.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 262.36 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 115.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 72.87 ms. Allocated memory is still 151.0 MB. Free memory was 115.5 MB in the beginning and 113.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 46.05 ms. Allocated memory is still 151.0 MB. Free memory was 113.8 MB in the beginning and 112.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 634.65 ms. Allocated memory is still 151.0 MB. Free memory was 112.6 MB in the beginning and 97.3 MB in the end (delta: 15.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6879.09 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 133.4 MB in the beginning and 76.6 MB in the end (delta: 56.8 MB). Peak memory consumption was 123.4 MB. Max. memory is 8.0 GB. * Witness Printer took 90.52 ms. Allocated memory is still 218.1 MB. Free memory was 76.6 MB in the beginning and 197.7 MB in the end (delta: -121.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (((((((((x <= 1 && 1 <= y) && y <= 1) && 1 == cond) && x == a + 1) && p == 1) && p * y + q + a * p * y == a * p + p * b + p + x * y) && 0 <= a) && cond == 1) && y == b + 1) || (((((((((1 <= y && x * y == a * p * b + q) && y <= 1) && 1 == cond) && p == 1) && 0 <= a) && q == 0) && cond == 1) && a <= 1) && b == y) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((((((((x <= 1 && 1 <= y) && y <= 1) && 1 == cond) && x == a + 1) && p == 1) && p * y + q + a * p * y == a * p + p * b + p + x * y) && 0 <= a) && cond == 1) && y == b + 1) || (((((((((q == x * y && y <= b) && 1 <= p) && q <= 0) && 1 <= y) && y <= 1) && 1 == cond) && 0 <= x) && a == 0) && cond == 1) - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((((((((1 <= y && x * y == a * p * b + q) && y <= 1) && p == 1) && 0 <= a) && q == 0) && cond == 1) && a <= 1) && b == y) || (((((((((x <= 1 && 1 <= y) && y <= 1) && 1 == cond) && x == a + 1) && p == 1) && p * y + q + a * p * y == a * p + p * b + p + x * y) && 0 <= a) && cond == 1) && y == b + 1) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.1s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 71 SDtfs, 385 SDslu, 103 SDs, 0 SdLazy, 266 SolverSat, 102 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 81 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=2, 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, 5 MinimizatonAttempts, 12 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 13 NumberOfFragments, 270 HoareAnnotationTreeSize, 5 FomulaSimplifications, 195 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 157 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 70 NumberOfCodeBlocks, 70 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 65 ConstructedInterpolants, 1 QuantifiedInterpolants, 13747 SizeOfPredicates, 47 NumberOfNonLiveVariables, 315 ConjunctsInSsa, 108 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 2/4 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...