/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-acceleration/underapprox_2-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 00:17:37,336 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 00:17:37,339 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 00:17:37,375 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 00:17:37,388 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 00:17:37,389 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 00:17:37,391 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 00:17:37,392 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 00:17:37,393 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 00:17:37,394 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 00:17:37,396 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 00:17:37,399 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 00:17:37,401 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 00:17:37,402 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 00:17:37,403 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 00:17:37,404 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 00:17:37,408 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 00:17:37,423 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-24 00:17:37,447 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 00:17:37,447 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 00:17:37,451 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 00:17:37,452 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 00:17:37,452 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 00:17:37,452 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 00:17:37,453 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 00:17:37,453 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 00:17:37,453 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 00:17:37,453 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 00:17:37,454 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 00:17:37,455 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 00:17:37,455 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 00:17:37,455 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 00:17:37,455 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 00:17:37,455 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 00:17:37,456 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 00:17:37,456 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 00:17:37,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 00:17:37,456 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 00:17:37,457 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 00:17:37,457 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 00:17:37,457 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-24 00:17:37,927 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 00:17:37,959 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 00:17:37,963 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 00:17:37,965 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 00:17:37,966 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 00:17:37,967 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/underapprox_2-2.c [2021-02-24 00:17:38,040 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e58625b3/e79b6170024f4d1495a50dc6a6a2480c/FLAG2fbd5cc8b [2021-02-24 00:17:38,641 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 00:17:38,642 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/underapprox_2-2.c [2021-02-24 00:17:38,649 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e58625b3/e79b6170024f4d1495a50dc6a6a2480c/FLAG2fbd5cc8b [2021-02-24 00:17:38,997 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e58625b3/e79b6170024f4d1495a50dc6a6a2480c [2021-02-24 00:17:39,000 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 00:17:39,013 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 00:17:39,019 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 00:17:39,019 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 00:17:39,023 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 00:17:39,024 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:17:38" (1/1) ... [2021-02-24 00:17:39,026 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@340c430f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:17:39, skipping insertion in model container [2021-02-24 00:17:39,027 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:17:38" (1/1) ... [2021-02-24 00:17:39,039 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 00:17:39,057 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 00:17:39,201 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/underapprox_2-2.c[327,340] [2021-02-24 00:17:39,213 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:17:39,224 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 00:17:39,238 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/underapprox_2-2.c[327,340] [2021-02-24 00:17:39,241 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:17:39,257 INFO L208 MainTranslator]: Completed translation [2021-02-24 00:17:39,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:17:39 WrapperNode [2021-02-24 00:17:39,257 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 00:17:39,259 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 00:17:39,259 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 00:17:39,259 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 00:17:39,272 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:17:39" (1/1) ... [2021-02-24 00:17:39,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:17:39" (1/1) ... [2021-02-24 00:17:39,279 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:17:39" (1/1) ... [2021-02-24 00:17:39,279 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:17:39" (1/1) ... [2021-02-24 00:17:39,285 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:17:39" (1/1) ... [2021-02-24 00:17:39,289 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:17:39" (1/1) ... [2021-02-24 00:17:39,290 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:17:39" (1/1) ... [2021-02-24 00:17:39,292 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 00:17:39,293 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 00:17:39,294 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 00:17:39,294 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 00:17:39,295 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:17:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 00:17:39,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 00:17:39,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 00:17:39,404 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 00:17:39,404 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 00:17:39,405 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 00:17:39,405 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 00:17:39,406 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 00:17:39,406 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 00:17:39,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 00:17:39,406 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 00:17:39,407 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 00:17:39,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 00:17:39,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 00:17:39,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 00:17:39,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 00:17:39,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 00:17:39,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 00:17:39,690 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 00:17:39,690 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-24 00:17:39,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:17:39 BoogieIcfgContainer [2021-02-24 00:17:39,692 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 00:17:39,694 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 00:17:39,694 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 00:17:39,698 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 00:17:39,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 12:17:38" (1/3) ... [2021-02-24 00:17:39,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74784f99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:17:39, skipping insertion in model container [2021-02-24 00:17:39,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:17:39" (2/3) ... [2021-02-24 00:17:39,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74784f99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:17:39, skipping insertion in model container [2021-02-24 00:17:39,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:17:39" (3/3) ... [2021-02-24 00:17:39,702 INFO L111 eAbstractionObserver]: Analyzing ICFG underapprox_2-2.c [2021-02-24 00:17:39,710 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 00:17:39,715 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 00:17:39,738 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 00:17:39,779 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 00:17:39,780 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 00:17:39,780 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-24 00:17:39,780 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 00:17:39,780 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 00:17:39,781 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 00:17:39,781 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 00:17:39,781 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 00:17:39,819 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2021-02-24 00:17:39,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-02-24 00:17:39,842 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:17:39,843 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:17:39,844 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:17:39,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:17:39,859 INFO L82 PathProgramCache]: Analyzing trace with hash 645207053, now seen corresponding path program 1 times [2021-02-24 00:17:39,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:17:39,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [20795571] [2021-02-24 00:17:39,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:17:40,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:17:40,301 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:40,304 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:17:40,308 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:40,309 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:17:40,344 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.4 percent of original size [2021-02-24 00:17:40,348 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.4 percent of original size 38 [2021-02-24 00:17:40,353 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:40,358 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:17:40,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:17:40,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:17:40,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:40,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:17:40,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:17:40,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [20795571] [2021-02-24 00:17:40,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:17:40,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 00:17:40,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445980544] [2021-02-24 00:17:40,451 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 00:17:40,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:17:40,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 00:17:40,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 00:17:40,469 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 4 states. [2021-02-24 00:17:40,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:17:40,603 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2021-02-24 00:17:40,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 00:17:40,605 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2021-02-24 00:17:40,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:17:40,613 INFO L225 Difference]: With dead ends: 45 [2021-02-24 00:17:40,614 INFO L226 Difference]: Without dead ends: 27 [2021-02-24 00:17:40,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-24 00:17:40,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-02-24 00:17:40,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2021-02-24 00:17:40,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-02-24 00:17:40,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2021-02-24 00:17:40,665 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 19 [2021-02-24 00:17:40,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:17:40,666 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2021-02-24 00:17:40,666 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 00:17:40,666 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2021-02-24 00:17:40,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-24 00:17:40,667 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:17:40,667 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:17:40,668 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 00:17:40,668 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:17:40,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:17:40,669 INFO L82 PathProgramCache]: Analyzing trace with hash -567626551, now seen corresponding path program 1 times [2021-02-24 00:17:40,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:17:40,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1969527075] [2021-02-24 00:17:40,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:17:40,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:17:40,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:40,753 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:17:40,754 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:40,754 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:17:40,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:40,759 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:17:40,772 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-24 00:17:40,774 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-24 00:17:40,804 WARN L141 QuantifierPusher]: treesize reduction 21, result has 4.5 percent of original size [2021-02-24 00:17:40,806 WARN L147 QuantifierPusher]: treesize reduction 21, result has 4.5 percent of original size 1 [2021-02-24 00:17:40,807 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:40,808 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:17:40,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:17:40,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:17:40,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:40,884 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:17:40,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:17:40,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1969527075] [2021-02-24 00:17:40,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:17:40,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-02-24 00:17:40,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456746882] [2021-02-24 00:17:40,895 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-24 00:17:40,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:17:40,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-24 00:17:40,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-02-24 00:17:40,897 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 6 states. [2021-02-24 00:17:41,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:17:41,161 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2021-02-24 00:17:41,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-24 00:17:41,162 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2021-02-24 00:17:41,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:17:41,166 INFO L225 Difference]: With dead ends: 37 [2021-02-24 00:17:41,166 INFO L226 Difference]: Without dead ends: 32 [2021-02-24 00:17:41,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-02-24 00:17:41,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-02-24 00:17:41,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2021-02-24 00:17:41,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-02-24 00:17:41,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2021-02-24 00:17:41,191 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 24 [2021-02-24 00:17:41,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:17:41,195 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2021-02-24 00:17:41,196 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-24 00:17:41,197 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2021-02-24 00:17:41,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-02-24 00:17:41,199 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:17:41,199 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:17:41,205 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 00:17:41,205 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:17:41,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:17:41,211 INFO L82 PathProgramCache]: Analyzing trace with hash -137877107, now seen corresponding path program 2 times [2021-02-24 00:17:41,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:17:41,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [650593363] [2021-02-24 00:17:41,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:17:41,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:17:41,319 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:41,320 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:17:41,321 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:41,321 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:17:41,324 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:41,324 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:17:41,329 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:41,329 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:17:41,338 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:41,339 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:17:41,349 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-24 00:17:41,350 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-24 00:17:41,376 WARN L141 QuantifierPusher]: treesize reduction 21, result has 4.5 percent of original size [2021-02-24 00:17:41,377 WARN L147 QuantifierPusher]: treesize reduction 21, result has 4.5 percent of original size 1 [2021-02-24 00:17:41,378 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:41,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:17:41,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:17:41,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:17:41,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:41,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:17:41,419 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:17:41,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [650593363] [2021-02-24 00:17:41,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:17:41,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-02-24 00:17:41,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696185795] [2021-02-24 00:17:41,421 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-24 00:17:41,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:17:41,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-24 00:17:41,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-02-24 00:17:41,422 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 8 states. [2021-02-24 00:17:41,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:17:41,746 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2021-02-24 00:17:41,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-24 00:17:41,747 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2021-02-24 00:17:41,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:17:41,748 INFO L225 Difference]: With dead ends: 42 [2021-02-24 00:17:41,748 INFO L226 Difference]: Without dead ends: 37 [2021-02-24 00:17:41,749 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-02-24 00:17:41,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-02-24 00:17:41,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2021-02-24 00:17:41,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-02-24 00:17:41,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2021-02-24 00:17:41,762 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 29 [2021-02-24 00:17:41,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:17:41,763 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2021-02-24 00:17:41,763 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-24 00:17:41,763 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2021-02-24 00:17:41,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-02-24 00:17:41,764 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:17:41,765 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:17:41,765 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 00:17:41,765 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:17:41,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:17:41,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1729556663, now seen corresponding path program 3 times [2021-02-24 00:17:41,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:17:41,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [309487243] [2021-02-24 00:17:41,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:17:41,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:17:41,816 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:41,817 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:17:41,817 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:41,818 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:17:41,820 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:41,821 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:17:41,825 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:41,826 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:17:41,833 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:41,833 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:17:41,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:41,843 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:17:41,854 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:41,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:17:41,869 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-24 00:17:41,870 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-24 00:17:41,900 WARN L141 QuantifierPusher]: treesize reduction 21, result has 4.5 percent of original size [2021-02-24 00:17:41,901 WARN L147 QuantifierPusher]: treesize reduction 21, result has 4.5 percent of original size 1 [2021-02-24 00:17:41,901 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:41,902 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:17:41,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:17:41,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:17:41,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:41,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:17:41,948 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:17:41,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [309487243] [2021-02-24 00:17:41,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:17:41,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-02-24 00:17:41,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163861526] [2021-02-24 00:17:41,950 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-24 00:17:41,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:17:41,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-24 00:17:41,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-02-24 00:17:41,951 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 10 states. [2021-02-24 00:17:42,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:17:42,440 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2021-02-24 00:17:42,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-24 00:17:42,440 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2021-02-24 00:17:42,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:17:42,442 INFO L225 Difference]: With dead ends: 47 [2021-02-24 00:17:42,442 INFO L226 Difference]: Without dead ends: 42 [2021-02-24 00:17:42,443 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2021-02-24 00:17:42,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-02-24 00:17:42,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2021-02-24 00:17:42,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2021-02-24 00:17:42,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2021-02-24 00:17:42,455 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 34 [2021-02-24 00:17:42,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:17:42,455 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2021-02-24 00:17:42,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-24 00:17:42,456 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2021-02-24 00:17:42,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-24 00:17:42,457 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:17:42,457 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:17:42,457 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 00:17:42,457 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:17:42,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:17:42,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1302438131, now seen corresponding path program 4 times [2021-02-24 00:17:42,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:17:42,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [411690370] [2021-02-24 00:17:42,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:17:42,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:17:42,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:42,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:17:42,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:42,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:17:42,545 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:42,546 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:17:42,550 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:42,551 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:17:42,558 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:42,559 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:17:42,574 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:42,575 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:17:42,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:42,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:17:42,598 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:42,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:17:42,612 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:42,613 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:17:42,627 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-24 00:17:42,628 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-24 00:17:42,656 WARN L141 QuantifierPusher]: treesize reduction 21, result has 4.5 percent of original size [2021-02-24 00:17:42,657 WARN L147 QuantifierPusher]: treesize reduction 21, result has 4.5 percent of original size 1 [2021-02-24 00:17:42,658 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:42,658 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:17:42,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:17:42,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:17:42,699 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:42,699 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:17:42,703 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:17:42,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [411690370] [2021-02-24 00:17:42,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:17:42,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-02-24 00:17:42,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22624665] [2021-02-24 00:17:42,705 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-24 00:17:42,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:17:42,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-24 00:17:42,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-02-24 00:17:42,706 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 12 states. [2021-02-24 00:17:43,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:17:43,376 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2021-02-24 00:17:43,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-24 00:17:43,377 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 39 [2021-02-24 00:17:43,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:17:43,378 INFO L225 Difference]: With dead ends: 52 [2021-02-24 00:17:43,378 INFO L226 Difference]: Without dead ends: 47 [2021-02-24 00:17:43,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2021-02-24 00:17:43,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-02-24 00:17:43,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2021-02-24 00:17:43,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-02-24 00:17:43,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2021-02-24 00:17:43,393 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 39 [2021-02-24 00:17:43,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:17:43,394 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2021-02-24 00:17:43,394 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-24 00:17:43,394 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2021-02-24 00:17:43,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-02-24 00:17:43,395 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:17:43,396 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:17:43,396 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-24 00:17:43,396 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:17:43,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:17:43,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1465403849, now seen corresponding path program 5 times [2021-02-24 00:17:43,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:17:43,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1058914638] [2021-02-24 00:17:43,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:17:43,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:17:43,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:43,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:17:43,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:43,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:17:43,452 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:43,453 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:17:43,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:43,458 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:17:43,466 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:43,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:17:43,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:43,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:17:43,486 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:43,487 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:17:43,499 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:43,499 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:17:43,514 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:43,515 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:17:43,529 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:43,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:17:43,545 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:43,546 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:17:43,563 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-24 00:17:43,564 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-24 00:17:43,596 WARN L141 QuantifierPusher]: treesize reduction 21, result has 4.5 percent of original size [2021-02-24 00:17:43,598 WARN L147 QuantifierPusher]: treesize reduction 21, result has 4.5 percent of original size 1 [2021-02-24 00:17:43,599 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:43,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:17:43,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:17:43,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:17:43,641 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:43,642 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:17:43,647 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:17:43,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1058914638] [2021-02-24 00:17:43,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:17:43,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-02-24 00:17:43,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373503580] [2021-02-24 00:17:43,648 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-24 00:17:43,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:17:43,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-24 00:17:43,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-02-24 00:17:43,649 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 14 states. [2021-02-24 00:17:44,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:17:44,558 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2021-02-24 00:17:44,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-24 00:17:44,559 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 44 [2021-02-24 00:17:44,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:17:44,560 INFO L225 Difference]: With dead ends: 57 [2021-02-24 00:17:44,560 INFO L226 Difference]: Without dead ends: 52 [2021-02-24 00:17:44,561 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=143, Invalid=727, Unknown=0, NotChecked=0, Total=870 [2021-02-24 00:17:44,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-02-24 00:17:44,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2021-02-24 00:17:44,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-02-24 00:17:44,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2021-02-24 00:17:44,578 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 44 [2021-02-24 00:17:44,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:17:44,579 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2021-02-24 00:17:44,579 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-24 00:17:44,579 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2021-02-24 00:17:44,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-02-24 00:17:44,581 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:17:44,581 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:17:44,581 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-24 00:17:44,581 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:17:44,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:17:44,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1959769229, now seen corresponding path program 6 times [2021-02-24 00:17:44,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:17:44,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1303677143] [2021-02-24 00:17:44,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:17:44,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:17:44,651 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:44,652 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:17:44,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:44,653 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:17:44,657 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:44,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:17:44,662 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:44,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:17:44,672 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:44,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:17:44,682 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:44,683 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:17:44,700 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:44,700 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:17:44,712 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:44,713 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:17:44,725 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:44,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:17:44,740 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:44,741 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:17:44,766 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:44,767 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:17:44,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:44,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:17:44,803 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:44,804 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:17:44,826 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.0 percent of original size [2021-02-24 00:17:44,827 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.0 percent of original size 32 [2021-02-24 00:17:44,873 WARN L141 QuantifierPusher]: treesize reduction 19, result has 67.2 percent of original size [2021-02-24 00:17:44,877 WARN L147 QuantifierPusher]: treesize reduction 19, result has 67.2 percent of original size 39 [2021-02-24 00:17:44,926 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:44,927 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:17:44,948 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:44,948 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:17:44,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:44,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:17:45,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:17:45,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:17:45,029 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:45,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:17:45,040 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:17:45,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1303677143] [2021-02-24 00:17:45,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:17:45,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-02-24 00:17:45,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681286795] [2021-02-24 00:17:45,043 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-02-24 00:17:45,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:17:45,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-02-24 00:17:45,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2021-02-24 00:17:45,044 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 19 states. [2021-02-24 00:17:46,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:17:46,305 INFO L93 Difference]: Finished difference Result 58 states and 59 transitions. [2021-02-24 00:17:46,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-02-24 00:17:46,305 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 49 [2021-02-24 00:17:46,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:17:46,306 INFO L225 Difference]: With dead ends: 58 [2021-02-24 00:17:46,306 INFO L226 Difference]: Without dead ends: 0 [2021-02-24 00:17:46,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=171, Invalid=1389, Unknown=0, NotChecked=0, Total=1560 [2021-02-24 00:17:46,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-24 00:17:46,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-24 00:17:46,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-24 00:17:46,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-24 00:17:46,309 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 49 [2021-02-24 00:17:46,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:17:46,309 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-24 00:17:46,309 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-02-24 00:17:46,309 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-24 00:17:46,309 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-24 00:17:46,310 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-24 00:17:46,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-24 00:17:46,809 WARN L202 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 22 [2021-02-24 00:17:47,001 WARN L202 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 34 [2021-02-24 00:17:47,243 WARN L202 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 46 [2021-02-24 00:17:47,423 WARN L202 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 37 [2021-02-24 00:17:47,538 WARN L202 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 24 [2021-02-24 00:17:47,564 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-24 00:17:47,564 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-24 00:17:47,564 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-24 00:17:47,564 INFO L192 CegarLoopUtils]: At program point L3-2(line 3) the Hoare annotation is: true [2021-02-24 00:17:47,565 INFO L192 CegarLoopUtils]: At program point L3-3(line 3) the Hoare annotation is: true [2021-02-24 00:17:47,565 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 00:17:47,565 INFO L192 CegarLoopUtils]: At program point L3-4(line 3) the Hoare annotation is: true [2021-02-24 00:17:47,565 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-24 00:17:47,565 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2021-02-24 00:17:47,565 INFO L185 CegarLoopUtils]: 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|)) [2021-02-24 00:17:47,565 INFO L192 CegarLoopUtils]: At program point L3(line 3) the Hoare annotation is: true [2021-02-24 00:17:47,566 INFO L192 CegarLoopUtils]: At program point L3-1(line 3) the Hoare annotation is: true [2021-02-24 00:17:47,566 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-24 00:17:47,566 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-24 00:17:47,566 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 00:17:47,566 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-24 00:17:47,566 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-24 00:17:47,566 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 12 22) the Hoare annotation is: true [2021-02-24 00:17:47,566 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 12 22) the Hoare annotation is: true [2021-02-24 00:17:47,567 INFO L185 CegarLoopUtils]: At program point L18(line 18) the Hoare annotation is: (or (let ((.cse1 (div main_~x~0 4294967296))) (let ((.cse0 (* 4294967296 .cse1))) (and (< (+ .cse0 5) main_~x~0) (< 0 (+ .cse1 1)) (<= main_~x~0 (+ .cse0 6))))) (and (<= 4 main_~x~0) (<= main_~x~0 4)) (and (<= 2 main_~x~0) (<= main_~x~0 2)) (and (<= 1 main_~x~0) (<= main_~x~0 1)) (and (<= main_~x~0 3) (<= 3 main_~x~0)) (and (<= main_~x~0 5) (<= 5 main_~x~0))) [2021-02-24 00:17:47,567 INFO L185 CegarLoopUtils]: At program point L17(line 17) the Hoare annotation is: (or (and (<= 4 main_~x~0) (<= main_~x~0 4)) (and (<= 2 main_~x~0) (<= main_~x~0 2)) (and (<= 1 main_~x~0) (<= main_~x~0 1)) (and (<= main_~x~0 3) (<= 3 main_~x~0)) (and (<= main_~x~0 5) (<= 5 main_~x~0)) (= main_~x~0 0)) [2021-02-24 00:17:47,567 INFO L185 CegarLoopUtils]: At program point L17-1(line 17) the Hoare annotation is: (or (and (<= |main_#t~post7| 1) (<= 1 main_~x~0) (<= 1 |main_#t~post7|) (<= main_~x~0 1)) (and (<= main_~x~0 5) (<= |main_#t~post7| 5) (<= 5 main_~x~0) (<= 5 |main_#t~post7|)) (and (<= 2 main_~x~0) (<= main_~x~0 2) (<= 2 |main_#t~post7|) (<= |main_#t~post7| 2)) (and (<= |main_#t~post7| 3) (<= main_~x~0 3) (<= 3 |main_#t~post7|) (<= 3 main_~x~0)) (and (<= 4 |main_#t~post7|) (<= 4 main_~x~0) (<= |main_#t~post7| 4) (<= main_~x~0 4)) (and (= |main_#t~post7| 0) (= main_~x~0 0))) [2021-02-24 00:17:47,568 INFO L185 CegarLoopUtils]: At program point L17-2(line 17) the Hoare annotation is: (or (and (<= |main_#t~post7| 1) (<= 2 main_~x~0) (<= 1 |main_#t~post7|) (<= main_~x~0 2)) (and (<= main_~x~0 3) (<= 3 main_~x~0) (<= 2 |main_#t~post7|) (<= |main_#t~post7| 2)) (and (<= 1 main_~x~0) (= |main_#t~post7| 0) (<= main_~x~0 1)) (and (<= 4 main_~x~0) (<= |main_#t~post7| 3) (<= 3 |main_#t~post7|) (<= main_~x~0 4)) (let ((.cse1 (div main_~x~0 4294967296))) (let ((.cse0 (* 4294967296 .cse1))) (and (< (+ .cse0 5) main_~x~0) (< 0 (+ .cse1 1)) (<= |main_#t~post7| 5) (<= main_~x~0 (+ .cse0 6)) (<= 5 |main_#t~post7|)))) (and (<= 4 |main_#t~post7|) (<= |main_#t~post7| 4) (<= main_~x~0 5) (<= 5 main_~x~0))) [2021-02-24 00:17:47,568 INFO L185 CegarLoopUtils]: At program point L14(line 14) the Hoare annotation is: (= main_~x~0 0) [2021-02-24 00:17:47,568 INFO L185 CegarLoopUtils]: At program point L16-2(lines 16 19) the Hoare annotation is: (let ((.cse2 (div main_~x~0 4294967296))) (let ((.cse1 (< 0 (+ .cse2 1)))) (or (let ((.cse0 (* 4294967296 .cse2))) (and (< (+ .cse0 5) main_~x~0) .cse1 (<= main_~x~0 (+ .cse0 6)))) (and (<= main_~x~0 5) (<= 5 main_~x~0)) (and .cse1 (<= main_~x~0 4))))) [2021-02-24 00:17:47,568 INFO L185 CegarLoopUtils]: At program point L16-3(lines 16 19) the Hoare annotation is: (let ((.cse1 (div main_~x~0 4294967296))) (let ((.cse0 (* 4294967296 .cse1))) (and (< (+ .cse0 5) main_~x~0) (< 0 (+ .cse1 1)) (<= main_~x~0 (+ .cse0 6))))) [2021-02-24 00:17:47,568 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 12 22) the Hoare annotation is: true [2021-02-24 00:17:47,569 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2021-02-24 00:17:47,569 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 5 10) the Hoare annotation is: true [2021-02-24 00:17:47,569 INFO L185 CegarLoopUtils]: At program point L7(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-24 00:17:47,569 INFO L185 CegarLoopUtils]: At program point L6(lines 6 8) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-24 00:17:47,569 INFO L185 CegarLoopUtils]: At program point L7-1(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-24 00:17:47,569 INFO L192 CegarLoopUtils]: At program point L6-2(lines 5 10) the Hoare annotation is: true [2021-02-24 00:17:47,569 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-24 00:17:47,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 12:17:47 BoogieIcfgContainer [2021-02-24 00:17:47,588 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 00:17:47,590 INFO L168 Benchmark]: Toolchain (without parser) took 8588.02 ms. Allocated memory was 157.3 MB in the beginning and 226.5 MB in the end (delta: 69.2 MB). Free memory was 134.6 MB in the beginning and 101.3 MB in the end (delta: 33.3 MB). Peak memory consumption was 125.3 MB. Max. memory is 8.0 GB. [2021-02-24 00:17:47,590 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 157.3 MB. Free memory is still 138.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 00:17:47,591 INFO L168 Benchmark]: CACSL2BoogieTranslator took 239.42 ms. Allocated memory is still 157.3 MB. Free memory was 133.4 MB in the beginning and 124.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-24 00:17:47,591 INFO L168 Benchmark]: Boogie Preprocessor took 33.65 ms. Allocated memory is still 157.3 MB. Free memory was 124.3 MB in the beginning and 122.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-24 00:17:47,592 INFO L168 Benchmark]: RCFGBuilder took 399.09 ms. Allocated memory is still 157.3 MB. Free memory was 122.8 MB in the beginning and 109.7 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-02-24 00:17:47,592 INFO L168 Benchmark]: TraceAbstraction took 7894.57 ms. Allocated memory was 157.3 MB in the beginning and 226.5 MB in the end (delta: 69.2 MB). Free memory was 109.2 MB in the beginning and 101.3 MB in the end (delta: 7.9 MB). Peak memory consumption was 100.2 MB. Max. memory is 8.0 GB. [2021-02-24 00:17:47,594 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 157.3 MB. Free memory is still 138.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 239.42 ms. Allocated memory is still 157.3 MB. Free memory was 133.4 MB in the beginning and 124.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 33.65 ms. Allocated memory is still 157.3 MB. Free memory was 124.3 MB in the beginning and 122.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 399.09 ms. Allocated memory is still 157.3 MB. Free memory was 122.8 MB in the beginning and 109.7 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7894.57 ms. Allocated memory was 157.3 MB in the beginning and 226.5 MB in the end (delta: 69.2 MB). Free memory was 109.2 MB in the beginning and 101.3 MB in the end (delta: 7.9 MB). Peak memory consumption was 100.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: (((4294967296 * (x / 4294967296) + 5 < x && 0 < x / 4294967296 + 1) && x <= 4294967296 * (x / 4294967296) + 6) || (x <= 5 && 5 <= x)) || (0 < x / 4294967296 + 1 && x <= 4) - ProcedureContractResult [Line: 12]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 5]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.5s, OverallIterations: 7, TraceHistogramMax: 6, AutomataDifference: 4.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 175 SDtfs, 250 SDslu, 543 SDs, 0 SdLazy, 1214 SolverSat, 79 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 158 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 12 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 31 LocationsWithAnnotation, 80 PreInvPairs, 130 NumberOfFragments, 410 HoareAnnotationTreeSize, 80 FomulaSimplifications, 16638 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 31 FomulaSimplificationsInter, 1349 FormulaSimplificationTreeSizeReductionInter, 0.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 238 NumberOfCodeBlocks, 238 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 231 ConstructedInterpolants, 0 QuantifiedInterpolants, 44371 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/196 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...