/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/bitvector/soft_float_2a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-21 23:14:34,067 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-21 23:14:34,071 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-21 23:14:34,135 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-21 23:14:34,135 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-21 23:14:34,137 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-21 23:14:34,139 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-21 23:14:34,142 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-21 23:14:34,144 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-21 23:14:34,146 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-21 23:14:34,147 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-21 23:14:34,149 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-21 23:14:34,150 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-21 23:14:34,151 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-21 23:14:34,153 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-21 23:14:34,154 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-21 23:14:34,156 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-21 23:14:34,157 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-21 23:14:34,159 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-21 23:14:34,162 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-21 23:14:34,165 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-21 23:14:34,170 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-21 23:14:34,176 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-21 23:14:34,178 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-21 23:14:34,200 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-21 23:14:34,210 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-21 23:14:34,212 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-21 23:14:34,214 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-21 23:14:34,215 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-21 23:14:34,216 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-21 23:14:34,217 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-21 23:14:34,217 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-21 23:14:34,218 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-21 23:14:34,218 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-21 23:14:34,220 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-21 23:14:34,222 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-21 23:14:34,227 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-21 23:14:34,288 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-21 23:14:34,288 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-21 23:14:34,293 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-21 23:14:34,294 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-21 23:14:34,294 INFO L138 SettingsManager]: * Use SBE=true [2020-12-21 23:14:34,294 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-21 23:14:34,295 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-21 23:14:34,295 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-21 23:14:34,295 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-21 23:14:34,295 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-21 23:14:34,297 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-21 23:14:34,297 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-21 23:14:34,297 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-21 23:14:34,297 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-21 23:14:34,298 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-21 23:14:34,298 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-21 23:14:34,298 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-21 23:14:34,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-21 23:14:34,299 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-21 23:14:34,299 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-21 23:14:34,299 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-21 23:14:34,299 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-21 23:14:34,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-21 23:14:34,300 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-21 23:14:34,300 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-21 23:14:34,301 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-21 23:14:34,739 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-21 23:14:34,772 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-21 23:14:34,775 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-21 23:14:34,776 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-21 23:14:34,777 INFO L275 PluginConnector]: CDTParser initialized [2020-12-21 23:14:34,778 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c [2020-12-21 23:14:34,866 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b03255d6/63852799456c4e87b348f62a1d2103e0/FLAG692fd4a5d [2020-12-21 23:14:35,615 INFO L306 CDTParser]: Found 1 translation units. [2020-12-21 23:14:35,619 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c [2020-12-21 23:14:35,628 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b03255d6/63852799456c4e87b348f62a1d2103e0/FLAG692fd4a5d [2020-12-21 23:14:35,645 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b03255d6/63852799456c4e87b348f62a1d2103e0 [2020-12-21 23:14:35,649 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-21 23:14:35,651 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-21 23:14:35,653 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-21 23:14:35,653 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-21 23:14:35,657 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-21 23:14:35,658 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:14:35" (1/1) ... [2020-12-21 23:14:35,659 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4463f592 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:14:35, skipping insertion in model container [2020-12-21 23:14:35,659 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:14:35" (1/1) ... [2020-12-21 23:14:35,668 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-21 23:14:35,696 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-21 23:14:35,865 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/bitvector/soft_float_2a.c.cil.c[423,436] [2020-12-21 23:14:35,919 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-21 23:14:35,929 INFO L203 MainTranslator]: Completed pre-run [2020-12-21 23:14:35,943 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/bitvector/soft_float_2a.c.cil.c[423,436] [2020-12-21 23:14:35,974 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-21 23:14:35,996 INFO L208 MainTranslator]: Completed translation [2020-12-21 23:14:35,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:14:35 WrapperNode [2020-12-21 23:14:35,997 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-21 23:14:35,998 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-21 23:14:35,998 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-21 23:14:35,998 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-21 23:14:36,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:14:35" (1/1) ... [2020-12-21 23:14:36,017 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:14:35" (1/1) ... [2020-12-21 23:14:36,052 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-21 23:14:36,053 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-21 23:14:36,053 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-21 23:14:36,054 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-21 23:14:36,068 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:14:35" (1/1) ... [2020-12-21 23:14:36,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:14:35" (1/1) ... [2020-12-21 23:14:36,079 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:14:35" (1/1) ... [2020-12-21 23:14:36,081 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:14:35" (1/1) ... [2020-12-21 23:14:36,100 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:14:35" (1/1) ... [2020-12-21 23:14:36,119 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:14:35" (1/1) ... [2020-12-21 23:14:36,123 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:14:35" (1/1) ... [2020-12-21 23:14:36,131 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-21 23:14:36,132 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-21 23:14:36,132 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-21 23:14:36,132 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-21 23:14:36,138 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:14:35" (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 [2020-12-21 23:14:36,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-21 23:14:36,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-21 23:14:36,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-21 23:14:36,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-21 23:14:36,976 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-21 23:14:36,976 INFO L299 CfgBuilder]: Removed 24 assume(true) statements. [2020-12-21 23:14:36,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:14:36 BoogieIcfgContainer [2020-12-21 23:14:36,980 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-21 23:14:36,984 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-21 23:14:36,984 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-21 23:14:36,988 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-21 23:14:36,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 11:14:35" (1/3) ... [2020-12-21 23:14:36,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4de26771 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:14:36, skipping insertion in model container [2020-12-21 23:14:36,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:14:35" (2/3) ... [2020-12-21 23:14:36,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4de26771 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:14:36, skipping insertion in model container [2020-12-21 23:14:36,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:14:36" (3/3) ... [2020-12-21 23:14:36,991 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_2a.c.cil.c [2020-12-21 23:14:36,999 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-21 23:14:37,004 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-21 23:14:37,025 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-21 23:14:37,058 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-21 23:14:37,058 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-21 23:14:37,058 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-21 23:14:37,059 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-21 23:14:37,059 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-21 23:14:37,059 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-21 23:14:37,059 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-21 23:14:37,059 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-21 23:14:37,077 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2020-12-21 23:14:37,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-21 23:14:37,085 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:14:37,086 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, 1] [2020-12-21 23:14:37,087 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:14:37,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:14:37,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1243249868, now seen corresponding path program 1 times [2020-12-21 23:14:37,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:14:37,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760119622] [2020-12-21 23:14:37,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:14:37,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:14:37,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:14:37,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760119622] [2020-12-21 23:14:37,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:14:37,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:14:37,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681174576] [2020-12-21 23:14:37,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:14:37,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:14:37,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:14:37,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:14:37,434 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 3 states. [2020-12-21 23:14:37,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:14:37,531 INFO L93 Difference]: Finished difference Result 150 states and 251 transitions. [2020-12-21 23:14:37,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:14:37,533 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-12-21 23:14:37,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:14:37,547 INFO L225 Difference]: With dead ends: 150 [2020-12-21 23:14:37,547 INFO L226 Difference]: Without dead ends: 68 [2020-12-21 23:14:37,552 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:14:37,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-12-21 23:14:37,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-12-21 23:14:37,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-12-21 23:14:37,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 101 transitions. [2020-12-21 23:14:37,600 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 101 transitions. Word has length 25 [2020-12-21 23:14:37,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:14:37,600 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 101 transitions. [2020-12-21 23:14:37,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:14:37,601 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 101 transitions. [2020-12-21 23:14:37,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-21 23:14:37,602 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:14:37,602 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, 1, 1, 1] [2020-12-21 23:14:37,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-21 23:14:37,603 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:14:37,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:14:37,604 INFO L82 PathProgramCache]: Analyzing trace with hash 464393210, now seen corresponding path program 1 times [2020-12-21 23:14:37,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:14:37,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240086211] [2020-12-21 23:14:37,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:14:37,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:14:37,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:14:37,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240086211] [2020-12-21 23:14:37,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:14:37,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-21 23:14:37,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020204690] [2020-12-21 23:14:37,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-21 23:14:37,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:14:37,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-21 23:14:37,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-21 23:14:37,712 INFO L87 Difference]: Start difference. First operand 68 states and 101 transitions. Second operand 4 states. [2020-12-21 23:14:37,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:14:37,774 INFO L93 Difference]: Finished difference Result 88 states and 129 transitions. [2020-12-21 23:14:37,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-21 23:14:37,775 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-12-21 23:14:37,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:14:37,776 INFO L225 Difference]: With dead ends: 88 [2020-12-21 23:14:37,777 INFO L226 Difference]: Without dead ends: 68 [2020-12-21 23:14:37,778 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-21 23:14:37,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-12-21 23:14:37,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-12-21 23:14:37,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-12-21 23:14:37,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 100 transitions. [2020-12-21 23:14:37,792 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 100 transitions. Word has length 27 [2020-12-21 23:14:37,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:14:37,792 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 100 transitions. [2020-12-21 23:14:37,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-21 23:14:37,793 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 100 transitions. [2020-12-21 23:14:37,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-21 23:14:37,794 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:14:37,795 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, 1, 1, 1] [2020-12-21 23:14:37,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-21 23:14:37,795 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:14:37,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:14:37,796 INFO L82 PathProgramCache]: Analyzing trace with hash 722558648, now seen corresponding path program 1 times [2020-12-21 23:14:37,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:14:37,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201471812] [2020-12-21 23:14:37,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:14:37,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:14:37,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:14:37,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201471812] [2020-12-21 23:14:37,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:14:37,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:14:37,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859399026] [2020-12-21 23:14:37,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:14:37,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:14:37,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:14:37,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:14:37,888 INFO L87 Difference]: Start difference. First operand 68 states and 100 transitions. Second operand 3 states. [2020-12-21 23:14:38,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:14:38,017 INFO L93 Difference]: Finished difference Result 119 states and 172 transitions. [2020-12-21 23:14:38,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:14:38,018 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-12-21 23:14:38,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:14:38,019 INFO L225 Difference]: With dead ends: 119 [2020-12-21 23:14:38,020 INFO L226 Difference]: Without dead ends: 69 [2020-12-21 23:14:38,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:14:38,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-12-21 23:14:38,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 65. [2020-12-21 23:14:38,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-12-21 23:14:38,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 93 transitions. [2020-12-21 23:14:38,030 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 93 transitions. Word has length 27 [2020-12-21 23:14:38,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:14:38,031 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 93 transitions. [2020-12-21 23:14:38,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:14:38,031 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 93 transitions. [2020-12-21 23:14:38,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-21 23:14:38,032 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:14:38,033 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, 1, 1, 1, 1, 1, 1] [2020-12-21 23:14:38,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-21 23:14:38,033 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:14:38,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:14:38,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1336799219, now seen corresponding path program 1 times [2020-12-21 23:14:38,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:14:38,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755448280] [2020-12-21 23:14:38,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:14:38,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:14:38,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:14:38,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755448280] [2020-12-21 23:14:38,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:14:38,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-21 23:14:38,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003540958] [2020-12-21 23:14:38,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-21 23:14:38,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:14:38,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-21 23:14:38,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:14:38,088 INFO L87 Difference]: Start difference. First operand 65 states and 93 transitions. Second operand 3 states. [2020-12-21 23:14:38,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:14:38,128 INFO L93 Difference]: Finished difference Result 129 states and 183 transitions. [2020-12-21 23:14:38,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-21 23:14:38,129 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-12-21 23:14:38,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:14:38,130 INFO L225 Difference]: With dead ends: 129 [2020-12-21 23:14:38,131 INFO L226 Difference]: Without dead ends: 75 [2020-12-21 23:14:38,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-21 23:14:38,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-12-21 23:14:38,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2020-12-21 23:14:38,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-12-21 23:14:38,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 101 transitions. [2020-12-21 23:14:38,141 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 101 transitions. Word has length 30 [2020-12-21 23:14:38,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:14:38,142 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 101 transitions. [2020-12-21 23:14:38,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-21 23:14:38,142 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 101 transitions. [2020-12-21 23:14:38,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-21 23:14:38,144 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:14:38,144 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:14:38,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-21 23:14:38,144 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:14:38,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:14:38,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1305570860, now seen corresponding path program 1 times [2020-12-21 23:14:38,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:14:38,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001968316] [2020-12-21 23:14:38,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:14:38,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:14:38,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:14:38,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001968316] [2020-12-21 23:14:38,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:14:38,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-21 23:14:38,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850929223] [2020-12-21 23:14:38,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-21 23:14:38,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:14:38,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-21 23:14:38,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-21 23:14:38,270 INFO L87 Difference]: Start difference. First operand 72 states and 101 transitions. Second operand 4 states. [2020-12-21 23:14:38,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:14:38,380 INFO L93 Difference]: Finished difference Result 136 states and 189 transitions. [2020-12-21 23:14:38,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-21 23:14:38,380 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-12-21 23:14:38,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:14:38,382 INFO L225 Difference]: With dead ends: 136 [2020-12-21 23:14:38,382 INFO L226 Difference]: Without dead ends: 73 [2020-12-21 23:14:38,390 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-21 23:14:38,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-12-21 23:14:38,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 67. [2020-12-21 23:14:38,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-12-21 23:14:38,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 92 transitions. [2020-12-21 23:14:38,408 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 92 transitions. Word has length 32 [2020-12-21 23:14:38,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:14:38,408 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 92 transitions. [2020-12-21 23:14:38,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-21 23:14:38,409 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 92 transitions. [2020-12-21 23:14:38,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-21 23:14:38,414 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:14:38,414 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:14:38,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-21 23:14:38,415 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:14:38,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:14:38,416 INFO L82 PathProgramCache]: Analyzing trace with hash 734686790, now seen corresponding path program 1 times [2020-12-21 23:14:38,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:14:38,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140842118] [2020-12-21 23:14:38,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:14:38,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:14:38,509 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:14:38,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140842118] [2020-12-21 23:14:38,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090706851] [2020-12-21 23:14:38,510 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 [2020-12-21 23:14:38,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:14:38,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-21 23:14:38,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-21 23:14:38,672 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:14:38,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-21 23:14:38,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-12-21 23:14:38,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728264066] [2020-12-21 23:14:38,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-21 23:14:38,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:14:38,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-21 23:14:38,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-21 23:14:38,675 INFO L87 Difference]: Start difference. First operand 67 states and 92 transitions. Second operand 5 states. [2020-12-21 23:14:38,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:14:38,727 INFO L93 Difference]: Finished difference Result 160 states and 218 transitions. [2020-12-21 23:14:38,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-21 23:14:38,728 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-12-21 23:14:38,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:14:38,729 INFO L225 Difference]: With dead ends: 160 [2020-12-21 23:14:38,730 INFO L226 Difference]: Without dead ends: 103 [2020-12-21 23:14:38,730 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-21 23:14:38,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-12-21 23:14:38,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 72. [2020-12-21 23:14:38,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-12-21 23:14:38,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 98 transitions. [2020-12-21 23:14:38,738 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 98 transitions. Word has length 33 [2020-12-21 23:14:38,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:14:38,738 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 98 transitions. [2020-12-21 23:14:38,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-21 23:14:38,739 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 98 transitions. [2020-12-21 23:14:38,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-21 23:14:38,740 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:14:38,740 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:14:38,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-21 23:14:38,954 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:14:38,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:14:38,954 INFO L82 PathProgramCache]: Analyzing trace with hash -861199835, now seen corresponding path program 1 times [2020-12-21 23:14:38,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:14:38,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451595005] [2020-12-21 23:14:38,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:14:39,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:14:39,098 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:14:39,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451595005] [2020-12-21 23:14:39,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340637108] [2020-12-21 23:14:39,099 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 [2020-12-21 23:14:39,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:14:39,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-21 23:14:39,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-21 23:14:39,381 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-21 23:14:39,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-21 23:14:39,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2020-12-21 23:14:39,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453671177] [2020-12-21 23:14:39,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-21 23:14:39,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:14:39,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-21 23:14:39,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-12-21 23:14:39,384 INFO L87 Difference]: Start difference. First operand 72 states and 98 transitions. Second operand 7 states. [2020-12-21 23:14:39,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:14:39,630 INFO L93 Difference]: Finished difference Result 216 states and 294 transitions. [2020-12-21 23:14:39,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-21 23:14:39,630 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-12-21 23:14:39,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:14:39,632 INFO L225 Difference]: With dead ends: 216 [2020-12-21 23:14:39,632 INFO L226 Difference]: Without dead ends: 147 [2020-12-21 23:14:39,633 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-12-21 23:14:39,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-12-21 23:14:39,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 62. [2020-12-21 23:14:39,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-12-21 23:14:39,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 83 transitions. [2020-12-21 23:14:39,642 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 83 transitions. Word has length 35 [2020-12-21 23:14:39,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:14:39,642 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 83 transitions. [2020-12-21 23:14:39,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-21 23:14:39,642 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 83 transitions. [2020-12-21 23:14:39,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-21 23:14:39,643 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:14:39,643 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:14:39,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-21 23:14:39,857 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:14:39,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:14:39,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1367220671, now seen corresponding path program 1 times [2020-12-21 23:14:39,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:14:39,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207459725] [2020-12-21 23:14:39,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:14:39,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:14:39,947 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:14:39,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207459725] [2020-12-21 23:14:39,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987067741] [2020-12-21 23:14:39,948 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 [2020-12-21 23:14:40,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:14:40,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-21 23:14:40,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-21 23:14:40,118 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-21 23:14:40,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-21 23:14:40,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2020-12-21 23:14:40,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585221279] [2020-12-21 23:14:40,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-21 23:14:40,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:14:40,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-21 23:14:40,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-21 23:14:40,120 INFO L87 Difference]: Start difference. First operand 62 states and 83 transitions. Second operand 6 states. [2020-12-21 23:14:40,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:14:40,246 INFO L93 Difference]: Finished difference Result 77 states and 97 transitions. [2020-12-21 23:14:40,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-21 23:14:40,247 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-12-21 23:14:40,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:14:40,248 INFO L225 Difference]: With dead ends: 77 [2020-12-21 23:14:40,248 INFO L226 Difference]: Without dead ends: 72 [2020-12-21 23:14:40,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-12-21 23:14:40,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-12-21 23:14:40,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 67. [2020-12-21 23:14:40,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-12-21 23:14:40,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 88 transitions. [2020-12-21 23:14:40,256 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 88 transitions. Word has length 37 [2020-12-21 23:14:40,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:14:40,256 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 88 transitions. [2020-12-21 23:14:40,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-21 23:14:40,257 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 88 transitions. [2020-12-21 23:14:40,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-21 23:14:40,257 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:14:40,258 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:14:40,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-21 23:14:40,473 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:14:40,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:14:40,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1369067713, now seen corresponding path program 1 times [2020-12-21 23:14:40,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:14:40,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323277391] [2020-12-21 23:14:40,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:14:40,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:14:40,526 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-21 23:14:40,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323277391] [2020-12-21 23:14:40,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:14:40,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-21 23:14:40,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967001230] [2020-12-21 23:14:40,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-21 23:14:40,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:14:40,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-21 23:14:40,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-21 23:14:40,528 INFO L87 Difference]: Start difference. First operand 67 states and 88 transitions. Second operand 5 states. [2020-12-21 23:14:40,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:14:40,582 INFO L93 Difference]: Finished difference Result 72 states and 92 transitions. [2020-12-21 23:14:40,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-21 23:14:40,583 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-12-21 23:14:40,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:14:40,583 INFO L225 Difference]: With dead ends: 72 [2020-12-21 23:14:40,584 INFO L226 Difference]: Without dead ends: 62 [2020-12-21 23:14:40,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-21 23:14:40,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-12-21 23:14:40,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-12-21 23:14:40,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-12-21 23:14:40,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 80 transitions. [2020-12-21 23:14:40,589 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 80 transitions. Word has length 37 [2020-12-21 23:14:40,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:14:40,590 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 80 transitions. [2020-12-21 23:14:40,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-21 23:14:40,590 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 80 transitions. [2020-12-21 23:14:40,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-21 23:14:40,591 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:14:40,591 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:14:40,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-21 23:14:40,591 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:14:40,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:14:40,592 INFO L82 PathProgramCache]: Analyzing trace with hash -896100667, now seen corresponding path program 1 times [2020-12-21 23:14:40,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:14:40,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350815618] [2020-12-21 23:14:40,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:14:40,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:14:40,667 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:14:40,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350815618] [2020-12-21 23:14:40,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415207229] [2020-12-21 23:14:40,668 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 [2020-12-21 23:14:40,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:14:40,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-21 23:14:40,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-21 23:14:40,847 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-21 23:14:40,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-21 23:14:40,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2020-12-21 23:14:40,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643285924] [2020-12-21 23:14:40,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-21 23:14:40,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:14:40,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-21 23:14:40,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-12-21 23:14:40,850 INFO L87 Difference]: Start difference. First operand 62 states and 80 transitions. Second operand 8 states. [2020-12-21 23:14:41,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:14:41,151 INFO L93 Difference]: Finished difference Result 133 states and 166 transitions. [2020-12-21 23:14:41,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-21 23:14:41,152 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-12-21 23:14:41,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:14:41,154 INFO L225 Difference]: With dead ends: 133 [2020-12-21 23:14:41,154 INFO L226 Difference]: Without dead ends: 88 [2020-12-21 23:14:41,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2020-12-21 23:14:41,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-12-21 23:14:41,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 62. [2020-12-21 23:14:41,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-12-21 23:14:41,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 78 transitions. [2020-12-21 23:14:41,160 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 78 transitions. Word has length 38 [2020-12-21 23:14:41,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:14:41,160 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 78 transitions. [2020-12-21 23:14:41,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-21 23:14:41,161 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 78 transitions. [2020-12-21 23:14:41,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-21 23:14:41,161 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:14:41,162 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:14:41,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-21 23:14:41,377 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:14:41,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:14:41,378 INFO L82 PathProgramCache]: Analyzing trace with hash 964064688, now seen corresponding path program 1 times [2020-12-21 23:14:41,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:14:41,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354630165] [2020-12-21 23:14:41,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:14:41,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:14:41,468 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:14:41,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354630165] [2020-12-21 23:14:41,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031889449] [2020-12-21 23:14:41,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-21 23:14:41,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:14:41,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-21 23:14:41,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-21 23:14:41,634 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-21 23:14:41,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-21 23:14:41,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2020-12-21 23:14:41,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940336237] [2020-12-21 23:14:41,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-21 23:14:41,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:14:41,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-21 23:14:41,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-12-21 23:14:41,637 INFO L87 Difference]: Start difference. First operand 62 states and 78 transitions. Second operand 7 states. [2020-12-21 23:14:41,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:14:41,781 INFO L93 Difference]: Finished difference Result 89 states and 109 transitions. [2020-12-21 23:14:41,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-21 23:14:41,782 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2020-12-21 23:14:41,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:14:41,783 INFO L225 Difference]: With dead ends: 89 [2020-12-21 23:14:41,783 INFO L226 Difference]: Without dead ends: 64 [2020-12-21 23:14:41,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-12-21 23:14:41,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-12-21 23:14:41,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2020-12-21 23:14:41,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-12-21 23:14:41,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 76 transitions. [2020-12-21 23:14:41,788 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 76 transitions. Word has length 42 [2020-12-21 23:14:41,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:14:41,789 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 76 transitions. [2020-12-21 23:14:41,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-21 23:14:41,789 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 76 transitions. [2020-12-21 23:14:41,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-21 23:14:41,789 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:14:41,790 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:14:42,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-21 23:14:42,006 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:14:42,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:14:42,007 INFO L82 PathProgramCache]: Analyzing trace with hash 123088613, now seen corresponding path program 1 times [2020-12-21 23:14:42,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:14:42,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726058674] [2020-12-21 23:14:42,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:14:42,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:14:42,137 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 23:14:42,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726058674] [2020-12-21 23:14:42,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269513484] [2020-12-21 23:14:42,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-21 23:14:42,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:14:42,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-21 23:14:42,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-21 23:14:42,406 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-21 23:14:42,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-21 23:14:42,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [5] total 12 [2020-12-21 23:14:42,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651564241] [2020-12-21 23:14:42,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-21 23:14:42,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:14:42,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-21 23:14:42,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-12-21 23:14:42,409 INFO L87 Difference]: Start difference. First operand 62 states and 76 transitions. Second operand 9 states. [2020-12-21 23:14:42,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:14:42,666 INFO L93 Difference]: Finished difference Result 65 states and 79 transitions. [2020-12-21 23:14:42,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-21 23:14:42,666 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 46 [2020-12-21 23:14:42,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:14:42,666 INFO L225 Difference]: With dead ends: 65 [2020-12-21 23:14:42,667 INFO L226 Difference]: Without dead ends: 0 [2020-12-21 23:14:42,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2020-12-21 23:14:42,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-21 23:14:42,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-21 23:14:42,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-21 23:14:42,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-21 23:14:42,668 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 46 [2020-12-21 23:14:42,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:14:42,669 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-21 23:14:42,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-21 23:14:42,669 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-21 23:14:42,669 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-21 23:14:42,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-21 23:14:42,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-21 23:14:43,328 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-21 23:14:43,329 INFO L189 CegarLoopUtils]: For program point L235(lines 235 244) no Hoare annotation was computed. [2020-12-21 23:14:43,329 INFO L189 CegarLoopUtils]: For program point L235-2(lines 235 244) no Hoare annotation was computed. [2020-12-21 23:14:43,329 INFO L189 CegarLoopUtils]: For program point L252(lines 252 256) no Hoare annotation was computed. [2020-12-21 23:14:43,329 INFO L189 CegarLoopUtils]: For program point L186(lines 186 203) no Hoare annotation was computed. [2020-12-21 23:14:43,329 INFO L189 CegarLoopUtils]: For program point L252-2(lines 252 256) no Hoare annotation was computed. [2020-12-21 23:14:43,329 INFO L189 CegarLoopUtils]: For program point L186-2(lines 186 203) no Hoare annotation was computed. [2020-12-21 23:14:43,329 INFO L189 CegarLoopUtils]: For program point L21(lines 21 26) no Hoare annotation was computed. [2020-12-21 23:14:43,330 INFO L189 CegarLoopUtils]: For program point L21-1(lines 21 26) no Hoare annotation was computed. [2020-12-21 23:14:43,330 INFO L189 CegarLoopUtils]: For program point L21-2(lines 21 26) no Hoare annotation was computed. [2020-12-21 23:14:43,330 INFO L189 CegarLoopUtils]: For program point L21-3(lines 21 26) no Hoare annotation was computed. [2020-12-21 23:14:43,330 INFO L185 CegarLoopUtils]: At program point L71(lines 20 73) the Hoare annotation is: (and (= ULTIMATE.start_base2flt_~__retres4~0 0) (= ULTIMATE.start_base2flt_~m 0)) [2020-12-21 23:14:43,330 INFO L185 CegarLoopUtils]: At program point L71-1(lines 20 73) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2020-12-21 23:14:43,330 INFO L185 CegarLoopUtils]: At program point L71-2(lines 20 73) the Hoare annotation is: (or (and (<= (mod ULTIMATE.start_main_~zero~0 4294967296) 0) (= ULTIMATE.start_base2flt_~__retres4~0 0)) (= ULTIMATE.start_main_~zero~0 0)) [2020-12-21 23:14:43,331 INFO L185 CegarLoopUtils]: At program point L71-3(lines 20 73) the Hoare annotation is: (let ((.cse0 (<= (mod ULTIMATE.start_main_~zero~0 4294967296) 0))) (or (and .cse0 (= ULTIMATE.start_base2flt_~__retres4~0 0)) (and (= ULTIMATE.start_main_~a~0 0) .cse0) (= ULTIMATE.start_main_~zero~0 0))) [2020-12-21 23:14:43,331 INFO L189 CegarLoopUtils]: For program point L187(lines 187 192) no Hoare annotation was computed. [2020-12-21 23:14:43,331 INFO L189 CegarLoopUtils]: For program point L171(lines 171 176) no Hoare annotation was computed. [2020-12-21 23:14:43,331 INFO L185 CegarLoopUtils]: At program point L72(lines 16 74) the Hoare annotation is: (and (= |ULTIMATE.start_base2flt_#res| 0) (= ULTIMATE.start_base2flt_~__retres4~0 0) (= ULTIMATE.start_base2flt_~m 0)) [2020-12-21 23:14:43,332 INFO L189 CegarLoopUtils]: For program point L39(lines 39 43) no Hoare annotation was computed. [2020-12-21 23:14:43,332 INFO L185 CegarLoopUtils]: At program point L72-1(lines 16 74) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2020-12-21 23:14:43,332 INFO L185 CegarLoopUtils]: At program point L39-1(lines 29 44) the Hoare annotation is: false [2020-12-21 23:14:43,332 INFO L185 CegarLoopUtils]: At program point L72-2(lines 16 74) the Hoare annotation is: (or (= ULTIMATE.start_main_~zero~0 0) (and (= |ULTIMATE.start_base2flt_#res| 0) (<= (mod ULTIMATE.start_main_~zero~0 4294967296) 0) (= ULTIMATE.start_base2flt_~__retres4~0 0))) [2020-12-21 23:14:43,333 INFO L189 CegarLoopUtils]: For program point L39-2(lines 39 43) no Hoare annotation was computed. [2020-12-21 23:14:43,333 INFO L185 CegarLoopUtils]: At program point L72-3(lines 16 74) the Hoare annotation is: (let ((.cse0 (<= (mod ULTIMATE.start_main_~zero~0 4294967296) 0))) (or (and (= ULTIMATE.start_main_~a~0 0) .cse0) (= ULTIMATE.start_main_~zero~0 0) (and (= |ULTIMATE.start_base2flt_#res| 0) .cse0 (= ULTIMATE.start_base2flt_~__retres4~0 0)))) [2020-12-21 23:14:43,333 INFO L185 CegarLoopUtils]: At program point L39-3(lines 29 44) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2020-12-21 23:14:43,333 INFO L189 CegarLoopUtils]: For program point L39-4(lines 39 43) no Hoare annotation was computed. [2020-12-21 23:14:43,333 INFO L185 CegarLoopUtils]: At program point L39-5(lines 29 44) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2020-12-21 23:14:43,333 INFO L189 CegarLoopUtils]: For program point L39-6(lines 39 43) no Hoare annotation was computed. [2020-12-21 23:14:43,333 INFO L185 CegarLoopUtils]: At program point L39-7(lines 29 44) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~a~0 0) (<= (mod ULTIMATE.start_main_~zero~0 4294967296) 0)) (= ULTIMATE.start_main_~zero~0 0)) [2020-12-21 23:14:43,334 INFO L189 CegarLoopUtils]: For program point L238(lines 238 242) no Hoare annotation was computed. [2020-12-21 23:14:43,334 INFO L189 CegarLoopUtils]: For program point L238-2(lines 238 242) no Hoare annotation was computed. [2020-12-21 23:14:43,334 INFO L189 CegarLoopUtils]: For program point L8(lines 8 10) no Hoare annotation was computed. [2020-12-21 23:14:43,334 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-21 23:14:43,334 INFO L189 CegarLoopUtils]: For program point L9(line 9) no Hoare annotation was computed. [2020-12-21 23:14:43,334 INFO L185 CegarLoopUtils]: At program point L208(lines 149 210) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~sa~0 1) (= ULTIMATE.start_main_~tmp~2 1)) (and (= ULTIMATE.start_mulflt_~__retres10~1 0) (<= (mod ULTIMATE.start_main_~zero~0 4294967296) 0)) (<= (+ ULTIMATE.start_main_~sa~0 1) 0)) [2020-12-21 23:14:43,334 INFO L189 CegarLoopUtils]: For program point L27(lines 27 67) no Hoare annotation was computed. [2020-12-21 23:14:43,334 INFO L189 CegarLoopUtils]: For program point L27-1(lines 27 67) no Hoare annotation was computed. [2020-12-21 23:14:43,334 INFO L189 CegarLoopUtils]: For program point L27-2(lines 27 67) no Hoare annotation was computed. [2020-12-21 23:14:43,335 INFO L189 CegarLoopUtils]: For program point L27-3(lines 27 67) no Hoare annotation was computed. [2020-12-21 23:14:43,335 INFO L185 CegarLoopUtils]: At program point L209(lines 139 211) the Hoare annotation is: (or (and (= ULTIMATE.start_mulflt_~__retres10~1 0) (<= (mod ULTIMATE.start_main_~zero~0 4294967296) 0) (= |ULTIMATE.start_mulflt_#res| 0)) (and (= ULTIMATE.start_main_~sa~0 1) (= ULTIMATE.start_main_~tmp~2 1)) (<= (+ ULTIMATE.start_main_~sa~0 1) 0)) [2020-12-21 23:14:43,335 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-21 23:14:43,335 INFO L189 CegarLoopUtils]: For program point L177(lines 177 182) no Hoare annotation was computed. [2020-12-21 23:14:43,335 INFO L189 CegarLoopUtils]: For program point L195(lines 195 200) no Hoare annotation was computed. [2020-12-21 23:14:43,335 INFO L189 CegarLoopUtils]: For program point L30(lines 29 44) no Hoare annotation was computed. [2020-12-21 23:14:43,335 INFO L189 CegarLoopUtils]: For program point L30-1(lines 29 44) no Hoare annotation was computed. [2020-12-21 23:14:43,335 INFO L189 CegarLoopUtils]: For program point L30-2(lines 29 44) no Hoare annotation was computed. [2020-12-21 23:14:43,336 INFO L189 CegarLoopUtils]: For program point L30-3(lines 29 44) no Hoare annotation was computed. [2020-12-21 23:14:43,336 INFO L185 CegarLoopUtils]: At program point L65(lines 27 67) the Hoare annotation is: false [2020-12-21 23:14:43,336 INFO L185 CegarLoopUtils]: At program point L65-1(lines 27 67) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2020-12-21 23:14:43,336 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-21 23:14:43,336 INFO L185 CegarLoopUtils]: At program point L65-2(lines 27 67) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2020-12-21 23:14:43,336 INFO L185 CegarLoopUtils]: At program point L65-3(lines 27 67) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~a~0 0) (<= (mod ULTIMATE.start_main_~zero~0 4294967296) 0)) (= ULTIMATE.start_main_~zero~0 0)) [2020-12-21 23:14:43,336 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2020-12-21 23:14:43,336 INFO L185 CegarLoopUtils]: At program point L49-2(lines 49 64) the Hoare annotation is: false [2020-12-21 23:14:43,337 INFO L185 CegarLoopUtils]: At program point L49-5(lines 49 64) the Hoare annotation is: false [2020-12-21 23:14:43,337 INFO L185 CegarLoopUtils]: At program point L49-8(lines 49 64) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2020-12-21 23:14:43,337 INFO L185 CegarLoopUtils]: At program point L49-11(lines 49 64) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~a~0 0) (<= (mod ULTIMATE.start_main_~zero~0 4294967296) 0)) (= ULTIMATE.start_main_~zero~0 0)) [2020-12-21 23:14:43,337 INFO L189 CegarLoopUtils]: For program point L248(lines 248 264) no Hoare annotation was computed. [2020-12-21 23:14:43,337 INFO L192 CegarLoopUtils]: At program point L248-1(lines 248 264) the Hoare annotation is: true [2020-12-21 23:14:43,337 INFO L189 CegarLoopUtils]: For program point L50(lines 49 64) no Hoare annotation was computed. [2020-12-21 23:14:43,337 INFO L189 CegarLoopUtils]: For program point L50-1(lines 49 64) no Hoare annotation was computed. [2020-12-21 23:14:43,337 INFO L189 CegarLoopUtils]: For program point L50-2(lines 49 64) no Hoare annotation was computed. [2020-12-21 23:14:43,337 INFO L189 CegarLoopUtils]: For program point L50-3(lines 49 64) no Hoare annotation was computed. [2020-12-21 23:14:43,338 INFO L189 CegarLoopUtils]: For program point L249(lines 249 258) no Hoare annotation was computed. [2020-12-21 23:14:43,338 INFO L189 CegarLoopUtils]: For program point L249-2(lines 249 258) no Hoare annotation was computed. [2020-12-21 23:14:43,338 INFO L189 CegarLoopUtils]: For program point L150(lines 150 156) no Hoare annotation was computed. [2020-12-21 23:14:43,338 INFO L189 CegarLoopUtils]: For program point L150-2(lines 149 210) no Hoare annotation was computed. [2020-12-21 23:14:43,338 INFO L189 CegarLoopUtils]: For program point L51(lines 49 64) no Hoare annotation was computed. [2020-12-21 23:14:43,338 INFO L189 CegarLoopUtils]: For program point L51-1(lines 49 64) no Hoare annotation was computed. [2020-12-21 23:14:43,338 INFO L189 CegarLoopUtils]: For program point L51-2(lines 49 64) no Hoare annotation was computed. [2020-12-21 23:14:43,338 INFO L189 CegarLoopUtils]: For program point L51-3(lines 49 64) no Hoare annotation was computed. [2020-12-21 23:14:43,338 INFO L192 CegarLoopUtils]: At program point L266(lines 212 268) the Hoare annotation is: true [2020-12-21 23:14:43,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 11:14:43 BoogieIcfgContainer [2020-12-21 23:14:43,366 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-21 23:14:43,367 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-21 23:14:43,367 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-21 23:14:43,367 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-21 23:14:43,368 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:14:36" (3/4) ... [2020-12-21 23:14:43,372 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-21 23:14:43,388 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-12-21 23:14:43,389 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-21 23:14:43,390 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-21 23:14:43,390 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-21 23:14:43,420 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\result == 0 && __retres4 == 0) && m == 0 [2020-12-21 23:14:43,422 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: zero == 0 || ((\result == 0 && zero % 4294967296 <= 0) && __retres4 == 0) [2020-12-21 23:14:43,423 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((a == 0 && zero % 4294967296 <= 0) || zero == 0) || ((\result == 0 && zero % 4294967296 <= 0) && __retres4 == 0) [2020-12-21 23:14:43,424 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((__retres10 == 0 && zero % 4294967296 <= 0) && \result == 0) || (sa == 1 && tmp == 1)) || sa + 1 <= 0 [2020-12-21 23:14:43,471 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/bitvector/soft_float_2a.c.cil.c-witness.graphml [2020-12-21 23:14:43,471 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-21 23:14:43,473 INFO L168 Benchmark]: Toolchain (without parser) took 7821.72 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 126.1 MB in the beginning and 87.9 MB in the end (delta: 38.2 MB). Peak memory consumption was 70.0 MB. Max. memory is 8.0 GB. [2020-12-21 23:14:43,473 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory is still 124.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-21 23:14:43,474 INFO L168 Benchmark]: CACSL2BoogieTranslator took 344.49 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 113.5 MB in the end (delta: 12.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-12-21 23:14:43,474 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.58 ms. Allocated memory is still 151.0 MB. Free memory was 113.3 MB in the beginning and 111.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-21 23:14:43,475 INFO L168 Benchmark]: Boogie Preprocessor took 78.05 ms. Allocated memory is still 151.0 MB. Free memory was 111.2 MB in the beginning and 109.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-21 23:14:43,475 INFO L168 Benchmark]: RCFGBuilder took 848.48 ms. Allocated memory is still 151.0 MB. Free memory was 109.6 MB in the beginning and 113.8 MB in the end (delta: -4.2 MB). Peak memory consumption was 12.1 MB. Max. memory is 8.0 GB. [2020-12-21 23:14:43,476 INFO L168 Benchmark]: TraceAbstraction took 6382.72 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 113.3 MB in the beginning and 93.6 MB in the end (delta: 19.7 MB). Peak memory consumption was 50.6 MB. Max. memory is 8.0 GB. [2020-12-21 23:14:43,476 INFO L168 Benchmark]: Witness Printer took 104.28 ms. Allocated memory is still 181.4 MB. Free memory was 93.6 MB in the beginning and 87.9 MB in the end (delta: 5.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 8.0 GB. [2020-12-21 23:14:43,479 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory is still 124.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 344.49 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 113.5 MB in the end (delta: 12.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 54.58 ms. Allocated memory is still 151.0 MB. Free memory was 113.3 MB in the beginning and 111.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 78.05 ms. Allocated memory is still 151.0 MB. Free memory was 111.2 MB in the beginning and 109.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 848.48 ms. Allocated memory is still 151.0 MB. Free memory was 109.6 MB in the beginning and 113.8 MB in the end (delta: -4.2 MB). Peak memory consumption was 12.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6382.72 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 113.3 MB in the beginning and 93.6 MB in the end (delta: 19.7 MB). Peak memory consumption was 50.6 MB. Max. memory is 8.0 GB. * Witness Printer took 104.28 ms. Allocated memory is still 181.4 MB. Free memory was 93.6 MB in the beginning and 87.9 MB in the end (delta: 5.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: 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: 49]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (zero % 4294967296 <= 0 && __retres4 == 0) || zero == 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: ((a == 0 && zero % 4294967296 <= 0) || zero == 0) || ((\result == 0 && zero % 4294967296 <= 0) && __retres4 == 0) - InvariantResult [Line: 149]: Loop Invariant Derived loop invariant: ((sa == 1 && tmp == 1) || (__retres10 == 0 && zero % 4294967296 <= 0)) || sa + 1 <= 0 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: zero == 0 || ((\result == 0 && zero % 4294967296 <= 0) && __retres4 == 0) - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: (a == 0 && zero % 4294967296 <= 0) || zero == 0 - InvariantResult [Line: 139]: Loop Invariant Derived loop invariant: (((__retres10 == 0 && zero % 4294967296 <= 0) && \result == 0) || (sa == 1 && tmp == 1)) || sa + 1 <= 0 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: __retres4 == 0 && m == 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: (\result == 0 && __retres4 == 0) && m == 0 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: (a == 0 && zero % 4294967296 <= 0) || zero == 0 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 212]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: (a == 0 && zero % 4294967296 <= 0) || zero == 0 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 248]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: ((zero % 4294967296 <= 0 && __retres4 == 0) || (a == 0 && zero % 4294967296 <= 0)) || zero == 0 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: zero == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.8s, OverallIterations: 12, TraceHistogramMax: 2, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 970 SDtfs, 668 SDslu, 2202 SDs, 0 SdLazy, 687 SolverSat, 61 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 315 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=72occurred in iteration=0, 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, 12 MinimizatonAttempts, 162 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 24 LocationsWithAnnotation, 24 PreInvPairs, 65 NumberOfFragments, 206 HoareAnnotationTreeSize, 24 FomulaSimplifications, 1026 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 24 FomulaSimplificationsInter, 84 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 640 NumberOfCodeBlocks, 640 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 622 ConstructedInterpolants, 0 QuantifiedInterpolants, 39822 SizeOfPredicates, 37 NumberOfNonLiveVariables, 961 ConjunctsInSsa, 86 ConjunctsInUnsatCore, 18 InterpolantComputations, 11 PerfectInterpolantSequences, 18/37 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...