/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_4-2a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-21 23:14:38,034 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-21 23:14:38,037 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-21 23:14:38,073 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-21 23:14:38,073 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-21 23:14:38,075 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-21 23:14:38,078 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-21 23:14:38,081 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-21 23:14:38,083 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-21 23:14:38,084 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-21 23:14:38,086 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-21 23:14:38,087 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-21 23:14:38,088 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-21 23:14:38,089 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-21 23:14:38,091 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-21 23:14:38,092 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-21 23:14:38,105 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-21 23:14:38,112 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-21 23:14:38,114 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-21 23:14:38,119 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-21 23:14:38,125 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-21 23:14:38,131 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-21 23:14:38,133 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-21 23:14:38,134 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-21 23:14:38,143 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-21 23:14:38,153 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-21 23:14:38,154 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-21 23:14:38,155 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-21 23:14:38,158 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-21 23:14:38,161 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-21 23:14:38,161 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-21 23:14:38,162 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-21 23:14:38,162 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-21 23:14:38,163 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-21 23:14:38,164 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-21 23:14:38,165 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-21 23:14:38,167 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-21 23:14:38,229 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-21 23:14:38,229 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-21 23:14:38,234 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-21 23:14:38,234 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-21 23:14:38,235 INFO L138 SettingsManager]: * Use SBE=true [2020-12-21 23:14:38,235 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-21 23:14:38,235 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-21 23:14:38,235 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-21 23:14:38,235 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-21 23:14:38,236 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-21 23:14:38,237 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-21 23:14:38,237 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-21 23:14:38,237 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-21 23:14:38,238 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-21 23:14:38,238 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-21 23:14:38,238 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-21 23:14:38,238 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-21 23:14:38,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-21 23:14:38,239 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-21 23:14:38,239 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-21 23:14:38,239 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-21 23:14:38,239 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-21 23:14:38,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-21 23:14:38,240 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-21 23:14:38,240 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-21 23:14:38,241 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-21 23:14:38,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-21 23:14:38,675 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-21 23:14:38,678 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-21 23:14:38,679 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-21 23:14:38,680 INFO L275 PluginConnector]: CDTParser initialized [2020-12-21 23:14:38,684 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_4-2a.c.cil.c [2020-12-21 23:14:38,780 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdcc0a663/4b5bf192a2594c9ea05f466927c7dc98/FLAG17bf59d87 [2020-12-21 23:14:39,540 INFO L306 CDTParser]: Found 1 translation units. [2020-12-21 23:14:39,541 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_4-2a.c.cil.c [2020-12-21 23:14:39,558 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdcc0a663/4b5bf192a2594c9ea05f466927c7dc98/FLAG17bf59d87 [2020-12-21 23:14:39,879 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdcc0a663/4b5bf192a2594c9ea05f466927c7dc98 [2020-12-21 23:14:39,883 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-21 23:14:39,885 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-21 23:14:39,890 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-21 23:14:39,890 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-21 23:14:39,894 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-21 23:14:39,895 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:14:39" (1/1) ... [2020-12-21 23:14:39,898 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46af8686 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:14:39, skipping insertion in model container [2020-12-21 23:14:39,898 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:14:39" (1/1) ... [2020-12-21 23:14:39,906 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-21 23:14:39,963 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-21 23:14:40,140 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_4-2a.c.cil.c[450,463] [2020-12-21 23:14:40,194 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-21 23:14:40,207 INFO L203 MainTranslator]: Completed pre-run [2020-12-21 23:14:40,223 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_4-2a.c.cil.c[450,463] [2020-12-21 23:14:40,258 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-21 23:14:40,278 INFO L208 MainTranslator]: Completed translation [2020-12-21 23:14:40,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:14:40 WrapperNode [2020-12-21 23:14:40,280 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-21 23:14:40,285 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-21 23:14:40,285 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-21 23:14:40,286 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-21 23:14:40,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:14:40" (1/1) ... [2020-12-21 23:14:40,326 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:14:40" (1/1) ... [2020-12-21 23:14:40,399 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-21 23:14:40,404 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-21 23:14:40,404 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-21 23:14:40,404 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-21 23:14:40,417 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:14:40" (1/1) ... [2020-12-21 23:14:40,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:14:40" (1/1) ... [2020-12-21 23:14:40,438 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:14:40" (1/1) ... [2020-12-21 23:14:40,438 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:14:40" (1/1) ... [2020-12-21 23:14:40,460 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:14:40" (1/1) ... [2020-12-21 23:14:40,479 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:14:40" (1/1) ... [2020-12-21 23:14:40,483 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:14:40" (1/1) ... [2020-12-21 23:14:40,497 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-21 23:14:40,501 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-21 23:14:40,502 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-21 23:14:40,502 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-21 23:14:40,503 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:14:40" (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 23:14:40,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-21 23:14:40,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-21 23:14:40,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-21 23:14:40,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-21 23:14:41,389 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-21 23:14:41,389 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2020-12-21 23:14:41,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:14:41 BoogieIcfgContainer [2020-12-21 23:14:41,392 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-21 23:14:41,393 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-21 23:14:41,394 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-21 23:14:41,397 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-21 23:14:41,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 11:14:39" (1/3) ... [2020-12-21 23:14:41,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66efae5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:14:41, skipping insertion in model container [2020-12-21 23:14:41,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:14:40" (2/3) ... [2020-12-21 23:14:41,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66efae5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:14:41, skipping insertion in model container [2020-12-21 23:14:41,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:14:41" (3/3) ... [2020-12-21 23:14:41,401 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_4-2a.c.cil.c [2020-12-21 23:14:41,407 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-21 23:14:41,411 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-21 23:14:41,428 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-21 23:14:41,457 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-21 23:14:41,458 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-21 23:14:41,458 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-21 23:14:41,458 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-21 23:14:41,458 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-21 23:14:41,458 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-21 23:14:41,458 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-21 23:14:41,459 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-21 23:14:41,477 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states. [2020-12-21 23:14:41,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-21 23:14:41,483 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:14:41,484 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:14:41,485 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:14:41,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:14:41,492 INFO L82 PathProgramCache]: Analyzing trace with hash 765447693, now seen corresponding path program 1 times [2020-12-21 23:14:41,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:14:41,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960032991] [2020-12-21 23:14:41,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:14:41,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:14:41,771 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 23:14:41,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960032991] [2020-12-21 23:14:41,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:14:41,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-21 23:14:41,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627816121] [2020-12-21 23:14:41,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-21 23:14:41,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:14:41,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-21 23:14:41,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-21 23:14:41,802 INFO L87 Difference]: Start difference. First operand 82 states. Second operand 7 states. [2020-12-21 23:14:42,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:14:42,105 INFO L93 Difference]: Finished difference Result 261 states and 388 transitions. [2020-12-21 23:14:42,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-21 23:14:42,107 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-12-21 23:14:42,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:14:42,121 INFO L225 Difference]: With dead ends: 261 [2020-12-21 23:14:42,122 INFO L226 Difference]: Without dead ends: 173 [2020-12-21 23:14:42,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-12-21 23:14:42,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-12-21 23:14:42,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 115. [2020-12-21 23:14:42,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-12-21 23:14:42,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 157 transitions. [2020-12-21 23:14:42,184 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 157 transitions. Word has length 15 [2020-12-21 23:14:42,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:14:42,185 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 157 transitions. [2020-12-21 23:14:42,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-21 23:14:42,185 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 157 transitions. [2020-12-21 23:14:42,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-21 23:14:42,187 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:14:42,187 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 23:14:42,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-21 23:14:42,188 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:14:42,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:14:42,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1395490240, now seen corresponding path program 1 times [2020-12-21 23:14:42,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:14:42,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696023449] [2020-12-21 23:14:42,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:14:42,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:14:42,470 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 23:14:42,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696023449] [2020-12-21 23:14:42,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:14:42,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-21 23:14:42,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598351519] [2020-12-21 23:14:42,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-21 23:14:42,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:14:42,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-21 23:14:42,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-21 23:14:42,477 INFO L87 Difference]: Start difference. First operand 115 states and 157 transitions. Second operand 7 states. [2020-12-21 23:14:42,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:14:42,695 INFO L93 Difference]: Finished difference Result 186 states and 235 transitions. [2020-12-21 23:14:42,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-21 23:14:42,698 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-12-21 23:14:42,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:14:42,703 INFO L225 Difference]: With dead ends: 186 [2020-12-21 23:14:42,704 INFO L226 Difference]: Without dead ends: 159 [2020-12-21 23:14:42,707 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-12-21 23:14:42,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-12-21 23:14:42,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 104. [2020-12-21 23:14:42,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-12-21 23:14:42,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 140 transitions. [2020-12-21 23:14:42,726 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 140 transitions. Word has length 19 [2020-12-21 23:14:42,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:14:42,727 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 140 transitions. [2020-12-21 23:14:42,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-21 23:14:42,727 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 140 transitions. [2020-12-21 23:14:42,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-21 23:14:42,728 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:14:42,728 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] [2020-12-21 23:14:42,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-21 23:14:42,729 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:14:42,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:14:42,730 INFO L82 PathProgramCache]: Analyzing trace with hash -96423684, now seen corresponding path program 1 times [2020-12-21 23:14:42,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:14:42,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179988035] [2020-12-21 23:14:42,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:14:42,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:14:42,967 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 23:14:42,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179988035] [2020-12-21 23:14:42,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:14:42,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-12-21 23:14:42,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423843990] [2020-12-21 23:14:42,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-21 23:14:42,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:14:42,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-21 23:14:42,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-12-21 23:14:42,980 INFO L87 Difference]: Start difference. First operand 104 states and 140 transitions. Second operand 14 states. [2020-12-21 23:14:43,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:14:43,413 INFO L93 Difference]: Finished difference Result 161 states and 204 transitions. [2020-12-21 23:14:43,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-21 23:14:43,413 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 23 [2020-12-21 23:14:43,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:14:43,420 INFO L225 Difference]: With dead ends: 161 [2020-12-21 23:14:43,421 INFO L226 Difference]: Without dead ends: 156 [2020-12-21 23:14:43,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2020-12-21 23:14:43,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-12-21 23:14:43,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 113. [2020-12-21 23:14:43,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-12-21 23:14:43,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 149 transitions. [2020-12-21 23:14:43,466 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 149 transitions. Word has length 23 [2020-12-21 23:14:43,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:14:43,466 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 149 transitions. [2020-12-21 23:14:43,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-21 23:14:43,467 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 149 transitions. [2020-12-21 23:14:43,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-21 23:14:43,470 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:14:43,471 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] [2020-12-21 23:14:43,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-21 23:14:43,471 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:14:43,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:14:43,472 INFO L82 PathProgramCache]: Analyzing trace with hash 89058496, now seen corresponding path program 1 times [2020-12-21 23:14:43,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:14:43,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623035206] [2020-12-21 23:14:43,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:14:43,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:14:43,665 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 23:14:43,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623035206] [2020-12-21 23:14:43,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:14:43,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-21 23:14:43,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832288718] [2020-12-21 23:14:43,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-21 23:14:43,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:14:43,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-21 23:14:43,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-21 23:14:43,668 INFO L87 Difference]: Start difference. First operand 113 states and 149 transitions. Second operand 7 states. [2020-12-21 23:14:43,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:14:43,802 INFO L93 Difference]: Finished difference Result 175 states and 223 transitions. [2020-12-21 23:14:43,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-21 23:14:43,802 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-12-21 23:14:43,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:14:43,804 INFO L225 Difference]: With dead ends: 175 [2020-12-21 23:14:43,804 INFO L226 Difference]: Without dead ends: 152 [2020-12-21 23:14:43,805 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-21 23:14:43,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-12-21 23:14:43,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 116. [2020-12-21 23:14:43,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-12-21 23:14:43,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 153 transitions. [2020-12-21 23:14:43,816 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 153 transitions. Word has length 23 [2020-12-21 23:14:43,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:14:43,816 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 153 transitions. [2020-12-21 23:14:43,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-21 23:14:43,817 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 153 transitions. [2020-12-21 23:14:43,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-21 23:14:43,818 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:14:43,819 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] [2020-12-21 23:14:43,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-21 23:14:43,819 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:14:43,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:14:43,820 INFO L82 PathProgramCache]: Analyzing trace with hash 88998914, now seen corresponding path program 1 times [2020-12-21 23:14:43,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:14:43,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719480051] [2020-12-21 23:14:43,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:14:43,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:14:43,904 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 23:14:43,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719480051] [2020-12-21 23:14:43,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:14:43,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-21 23:14:43,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704011081] [2020-12-21 23:14:43,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-21 23:14:43,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:14:43,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-21 23:14:43,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-21 23:14:43,908 INFO L87 Difference]: Start difference. First operand 116 states and 153 transitions. Second operand 7 states. [2020-12-21 23:14:44,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:14:44,028 INFO L93 Difference]: Finished difference Result 161 states and 205 transitions. [2020-12-21 23:14:44,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-21 23:14:44,029 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-12-21 23:14:44,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:14:44,030 INFO L225 Difference]: With dead ends: 161 [2020-12-21 23:14:44,030 INFO L226 Difference]: Without dead ends: 138 [2020-12-21 23:14:44,031 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-12-21 23:14:44,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-12-21 23:14:44,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 116. [2020-12-21 23:14:44,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-12-21 23:14:44,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 153 transitions. [2020-12-21 23:14:44,040 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 153 transitions. Word has length 23 [2020-12-21 23:14:44,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:14:44,041 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 153 transitions. [2020-12-21 23:14:44,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-21 23:14:44,041 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 153 transitions. [2020-12-21 23:14:44,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-21 23:14:44,042 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:14:44,042 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] [2020-12-21 23:14:44,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-21 23:14:44,043 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:14:44,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:14:44,044 INFO L82 PathProgramCache]: Analyzing trace with hash 84449649, now seen corresponding path program 1 times [2020-12-21 23:14:44,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:14:44,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149005011] [2020-12-21 23:14:44,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:14:44,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 23:14:44,150 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 23:14:44,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149005011] [2020-12-21 23:14:44,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 23:14:44,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-21 23:14:44,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559934922] [2020-12-21 23:14:44,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-21 23:14:44,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 23:14:44,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-21 23:14:44,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-21 23:14:44,164 INFO L87 Difference]: Start difference. First operand 116 states and 153 transitions. Second operand 6 states. [2020-12-21 23:14:44,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 23:14:44,428 INFO L93 Difference]: Finished difference Result 322 states and 410 transitions. [2020-12-21 23:14:44,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-21 23:14:44,429 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-12-21 23:14:44,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 23:14:44,430 INFO L225 Difference]: With dead ends: 322 [2020-12-21 23:14:44,431 INFO L226 Difference]: Without dead ends: 280 [2020-12-21 23:14:44,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-12-21 23:14:44,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-12-21 23:14:44,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 130. [2020-12-21 23:14:44,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-12-21 23:14:44,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 173 transitions. [2020-12-21 23:14:44,442 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 173 transitions. Word has length 23 [2020-12-21 23:14:44,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 23:14:44,443 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 173 transitions. [2020-12-21 23:14:44,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-21 23:14:44,443 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 173 transitions. [2020-12-21 23:14:44,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-21 23:14:44,444 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 23:14:44,444 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] [2020-12-21 23:14:44,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-21 23:14:44,445 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 23:14:44,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 23:14:44,446 INFO L82 PathProgramCache]: Analyzing trace with hash 84509231, now seen corresponding path program 1 times [2020-12-21 23:14:44,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 23:14:44,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866556647] [2020-12-21 23:14:44,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 23:14:44,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-21 23:14:44,477 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-21 23:14:44,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-21 23:14:44,535 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-21 23:14:44,591 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-21 23:14:44,592 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-21 23:14:44,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-21 23:14:44,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 11:14:44 BoogieIcfgContainer [2020-12-21 23:14:44,647 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-21 23:14:44,648 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-21 23:14:44,648 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-21 23:14:44,648 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-21 23:14:44,649 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:14:41" (3/4) ... [2020-12-21 23:14:44,653 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-21 23:14:44,653 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-21 23:14:44,655 INFO L168 Benchmark]: Toolchain (without parser) took 4769.39 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 128.2 MB in the beginning and 122.4 MB in the end (delta: 5.8 MB). Peak memory consumption was 38.1 MB. Max. memory is 8.0 GB. [2020-12-21 23:14:44,656 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 153.1 MB. Free memory is still 125.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-21 23:14:44,657 INFO L168 Benchmark]: CACSL2BoogieTranslator took 393.25 ms. Allocated memory is still 153.1 MB. Free memory was 128.0 MB in the beginning and 115.2 MB in the end (delta: 12.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-12-21 23:14:44,657 INFO L168 Benchmark]: Boogie Procedure Inliner took 114.09 ms. Allocated memory is still 153.1 MB. Free memory was 115.2 MB in the beginning and 112.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-21 23:14:44,658 INFO L168 Benchmark]: Boogie Preprocessor took 93.29 ms. Allocated memory is still 153.1 MB. Free memory was 112.9 MB in the beginning and 111.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-21 23:14:44,659 INFO L168 Benchmark]: RCFGBuilder took 890.35 ms. Allocated memory is still 153.1 MB. Free memory was 111.2 MB in the beginning and 113.9 MB in the end (delta: -2.7 MB). Peak memory consumption was 11.0 MB. Max. memory is 8.0 GB. [2020-12-21 23:14:44,660 INFO L168 Benchmark]: TraceAbstraction took 3254.12 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 113.4 MB in the beginning and 122.4 MB in the end (delta: -9.1 MB). Peak memory consumption was 22.9 MB. Max. memory is 8.0 GB. [2020-12-21 23:14:44,661 INFO L168 Benchmark]: Witness Printer took 4.96 ms. Allocated memory is still 184.5 MB. Free memory is still 122.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-21 23:14:44,665 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 153.1 MB. Free memory is still 125.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 393.25 ms. Allocated memory is still 153.1 MB. Free memory was 128.0 MB in the beginning and 115.2 MB in the end (delta: 12.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 114.09 ms. Allocated memory is still 153.1 MB. Free memory was 115.2 MB in the beginning and 112.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 93.29 ms. Allocated memory is still 153.1 MB. Free memory was 112.9 MB in the beginning and 111.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 890.35 ms. Allocated memory is still 153.1 MB. Free memory was 111.2 MB in the beginning and 113.9 MB in the end (delta: -2.7 MB). Peak memory consumption was 11.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3254.12 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 113.4 MB in the beginning and 122.4 MB in the end (delta: -9.1 MB). Peak memory consumption was 22.9 MB. Max. memory is 8.0 GB. * Witness Printer took 4.96 ms. Allocated memory is still 184.5 MB. Free memory is still 122.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 10]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 103, overapproximation of bitwiseAnd at line 101. Possible FailurePath: [L219] unsigned int a ; [L220] unsigned int ma = __VERIFIER_nondet_uint(); [L221] signed char ea = __VERIFIER_nondet_char(); [L222] unsigned int b ; [L223] unsigned int mb = __VERIFIER_nondet_uint(); [L224] signed char eb = __VERIFIER_nondet_char(); [L225] unsigned int r_add1 ; [L226] unsigned int r_add2 ; [L227] unsigned int zero ; [L228] int tmp ; [L229] int tmp___0 ; [L230] int __retres14 ; [L18] unsigned int res ; [L19] unsigned int __retres4 ; [L22] COND TRUE ! m [L23] __retres4 = 0U [L73] return (__retres4); [L234] zero = base2flt(0, 0) [L18] unsigned int res ; [L19] unsigned int __retres4 ; [L22] COND FALSE !(! m) [L28] COND FALSE !(m < 1U << 24U) [L50] COND TRUE 1 [L52] COND TRUE m >= 1U << 25U [L57] COND TRUE e >= 127 [L58] __retres4 = 4294967295U [L73] return (__retres4); [L235] a = base2flt(ma, ea) [L18] unsigned int res ; [L19] unsigned int __retres4 ; [L22] COND FALSE !(! m) [L28] COND FALSE !(m < 1U << 24U) [L50] COND TRUE 1 [L52] COND FALSE !(m >= 1U << 25U) [L69] m = m & ~ (1U << 24U) [L70] res = m | ((unsigned int )(e + 128) << 24U) [L71] __retres4 = res [L73] return (__retres4); [L236] b = base2flt(mb, eb) [L77] unsigned int res ; [L78] unsigned int ma ; [L79] unsigned int mb ; [L80] unsigned int delta ; [L81] int ea ; [L82] int eb ; [L83] unsigned int tmp ; [L84] unsigned int __retres10 ; [L87] COND FALSE !(a < b) [L94] COND FALSE !(! b) [L101] ma = a & ((1U << 24U) - 1U) [L102] ea = (int )(a >> 24U) - 128 [L103] ma = ma | (1U << 24U) [L104] mb = b & ((1U << 24U) - 1U) [L105] eb = (int )(b >> 24U) - 128 [L106] mb = mb | (1U << 24U) [L9] COND TRUE !(cond) [L10] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 82 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.1s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 692 SDtfs, 1200 SDslu, 3227 SDs, 0 SdLazy, 623 SolverSat, 91 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=130occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 364 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 149 NumberOfCodeBlocks, 149 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 120 ConstructedInterpolants, 0 QuantifiedInterpolants, 7020 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...