/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/recursive-simple/id_i5_o5-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 20:28:42,962 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 20:28:42,965 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 20:28:43,029 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-21 20:28:43,052 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 20:28:43,058 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 20:28:43,060 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 20:28:43,061 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 20:28:43,065 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 20:28:43,067 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 20:28:43,075 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 20:28:43,080 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 20:28:43,084 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 20:28:43,085 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 20:28:43,087 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 20:28:43,089 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 20:28:43,112 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 20:28:43,128 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 20:28:43,129 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 20:28:43,130 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 20:28:43,131 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 20:28:43,160 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 20:28:43,160 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 20:28:43,162 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 20:28:43,162 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 20:28:43,162 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 20:28:43,163 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 20:28:43,163 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 20:28:43,163 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 20:28:43,163 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 20:28:43,163 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 20:28:43,164 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 20:28:43,164 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 20:28:43,166 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 20:28:43,166 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 20:28:43,166 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 20:28:43,166 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 20:28:43,166 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 20:28:43,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 20:28:43,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 20:28:43,167 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 20:28:43,167 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 20:28:43,168 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 20:28:43,168 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 20:28:43,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 20:28:43,621 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 20:28:43,624 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 20:28:43,626 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 20:28:43,627 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 20:28:43,628 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_i5_o5-2.c [2021-02-21 20:28:43,722 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/250c1e161/d5c2f5be1d9c41ab810c53cb32ecd737/FLAG2b6179106 [2021-02-21 20:28:44,452 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 20:28:44,453 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id_i5_o5-2.c [2021-02-21 20:28:44,460 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/250c1e161/d5c2f5be1d9c41ab810c53cb32ecd737/FLAG2b6179106 [2021-02-21 20:28:44,836 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/250c1e161/d5c2f5be1d9c41ab810c53cb32ecd737 [2021-02-21 20:28:44,840 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 20:28:44,858 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 20:28:44,867 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 20:28:44,867 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 20:28:44,871 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 20:28:44,872 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:28:44" (1/1) ... [2021-02-21 20:28:44,874 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6114440d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:28:44, skipping insertion in model container [2021-02-21 20:28:44,874 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:28:44" (1/1) ... [2021-02-21 20:28:44,884 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 20:28:44,901 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 20:28:45,153 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id_i5_o5-2.c[450,463] [2021-02-21 20:28:45,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:28:45,188 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 20:28:45,210 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id_i5_o5-2.c[450,463] [2021-02-21 20:28:45,211 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:28:45,229 INFO L208 MainTranslator]: Completed translation [2021-02-21 20:28:45,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:28:45 WrapperNode [2021-02-21 20:28:45,230 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 20:28:45,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 20:28:45,234 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 20:28:45,234 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 20:28:45,248 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:28:45" (1/1) ... [2021-02-21 20:28:45,248 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:28:45" (1/1) ... [2021-02-21 20:28:45,258 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:28:45" (1/1) ... [2021-02-21 20:28:45,258 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:28:45" (1/1) ... [2021-02-21 20:28:45,272 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:28:45" (1/1) ... [2021-02-21 20:28:45,274 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:28:45" (1/1) ... [2021-02-21 20:28:45,282 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:28:45" (1/1) ... [2021-02-21 20:28:45,288 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 20:28:45,291 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 20:28:45,291 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 20:28:45,292 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 20:28:45,293 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:28:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 20:28:45,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 20:28:45,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 20:28:45,398 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 20:28:45,398 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2021-02-21 20:28:45,398 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 20:28:45,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 20:28:45,398 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 20:28:45,398 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 20:28:45,400 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 20:28:45,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 20:28:45,400 INFO L130 BoogieDeclarations]: Found specification of procedure id [2021-02-21 20:28:45,400 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 20:28:45,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 20:28:45,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 20:28:45,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 20:28:45,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 20:28:45,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 20:28:45,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 20:28:45,644 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 20:28:45,645 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-21 20:28:45,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:28:45 BoogieIcfgContainer [2021-02-21 20:28:45,647 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 20:28:45,649 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 20:28:45,649 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 20:28:45,653 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 20:28:45,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 08:28:44" (1/3) ... [2021-02-21 20:28:45,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@94f7c4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:28:45, skipping insertion in model container [2021-02-21 20:28:45,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:28:45" (2/3) ... [2021-02-21 20:28:45,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@94f7c4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:28:45, skipping insertion in model container [2021-02-21 20:28:45,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:28:45" (3/3) ... [2021-02-21 20:28:45,656 INFO L111 eAbstractionObserver]: Analyzing ICFG id_i5_o5-2.c [2021-02-21 20:28:45,692 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 20:28:45,722 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 20:28:45,762 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 20:28:45,791 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 20:28:45,792 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 20:28:45,792 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 20:28:45,792 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 20:28:45,792 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 20:28:45,792 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 20:28:45,793 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 20:28:45,793 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 20:28:45,810 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2021-02-21 20:28:45,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-21 20:28:45,820 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:28:45,821 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:28:45,821 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:28:45,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:28:45,828 INFO L82 PathProgramCache]: Analyzing trace with hash -777358502, now seen corresponding path program 1 times [2021-02-21 20:28:45,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:28:45,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2108214725] [2021-02-21 20:28:45,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:28:45,932 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:28:46,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:46,079 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:46,080 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:46,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:46,082 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:46,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:46,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:46,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:28:46,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:46,159 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:46,160 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:46,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-21 20:28:46,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:46,199 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:46,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:46,218 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:46,219 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:46,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:28:46,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2108214725] [2021-02-21 20:28:46,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:28:46,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 20:28:46,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516919462] [2021-02-21 20:28:46,259 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 20:28:46,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:28:46,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 20:28:46,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-21 20:28:46,285 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 6 states. [2021-02-21 20:28:46,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:28:46,676 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2021-02-21 20:28:46,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 20:28:46,679 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2021-02-21 20:28:46,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:28:46,696 INFO L225 Difference]: With dead ends: 46 [2021-02-21 20:28:46,696 INFO L226 Difference]: Without dead ends: 31 [2021-02-21 20:28:46,702 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-02-21 20:28:46,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-02-21 20:28:46,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-02-21 20:28:46,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-02-21 20:28:46,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2021-02-21 20:28:46,788 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 24 [2021-02-21 20:28:46,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:28:46,789 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2021-02-21 20:28:46,789 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 20:28:46,789 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2021-02-21 20:28:46,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-02-21 20:28:46,791 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:28:46,792 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] [2021-02-21 20:28:46,792 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 20:28:46,793 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:28:46,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:28:46,794 INFO L82 PathProgramCache]: Analyzing trace with hash 814440848, now seen corresponding path program 1 times [2021-02-21 20:28:46,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:28:46,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1858451336] [2021-02-21 20:28:46,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:28:46,799 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:28:46,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:46,854 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:46,856 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:46,859 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:46,862 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:46,873 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:46,875 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:46,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:28:46,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:46,947 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:46,948 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:46,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-21 20:28:46,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:46,970 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:46,971 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:46,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:46,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:46,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:46,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:46,996 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:46,997 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:46,998 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:46,999 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:47,013 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-21 20:28:47,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1858451336] [2021-02-21 20:28:47,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:28:47,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-21 20:28:47,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792030195] [2021-02-21 20:28:47,016 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-21 20:28:47,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:28:47,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-21 20:28:47,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-02-21 20:28:47,018 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 7 states. [2021-02-21 20:28:47,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:28:47,342 INFO L93 Difference]: Finished difference Result 42 states and 43 transitions. [2021-02-21 20:28:47,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-21 20:28:47,343 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2021-02-21 20:28:47,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:28:47,344 INFO L225 Difference]: With dead ends: 42 [2021-02-21 20:28:47,345 INFO L226 Difference]: Without dead ends: 36 [2021-02-21 20:28:47,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-02-21 20:28:47,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-02-21 20:28:47,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-02-21 20:28:47,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-02-21 20:28:47,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2021-02-21 20:28:47,360 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 32 [2021-02-21 20:28:47,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:28:47,361 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2021-02-21 20:28:47,361 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-21 20:28:47,361 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2021-02-21 20:28:47,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-21 20:28:47,363 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:28:47,363 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:28:47,364 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 20:28:47,364 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:28:47,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:28:47,365 INFO L82 PathProgramCache]: Analyzing trace with hash -545888486, now seen corresponding path program 2 times [2021-02-21 20:28:47,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:28:47,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2044109248] [2021-02-21 20:28:47,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:28:47,369 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:28:47,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:47,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:47,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:47,416 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:47,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:47,419 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:47,420 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:47,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:28:47,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:47,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:47,464 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:47,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-21 20:28:47,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:47,486 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:47,487 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:47,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:47,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:47,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:47,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:47,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:47,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:47,516 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:47,517 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:47,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:47,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:47,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:47,534 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:47,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:47,535 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:47,556 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-02-21 20:28:47,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2044109248] [2021-02-21 20:28:47,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:28:47,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-21 20:28:47,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845101938] [2021-02-21 20:28:47,561 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-21 20:28:47,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:28:47,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-21 20:28:47,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-02-21 20:28:47,565 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 8 states. [2021-02-21 20:28:47,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:28:47,856 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2021-02-21 20:28:47,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-21 20:28:47,857 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2021-02-21 20:28:47,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:28:47,859 INFO L225 Difference]: With dead ends: 47 [2021-02-21 20:28:47,859 INFO L226 Difference]: Without dead ends: 41 [2021-02-21 20:28:47,860 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-02-21 20:28:47,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-02-21 20:28:47,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-02-21 20:28:47,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2021-02-21 20:28:47,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2021-02-21 20:28:47,875 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 40 [2021-02-21 20:28:47,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:28:47,875 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2021-02-21 20:28:47,876 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-21 20:28:47,876 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2021-02-21 20:28:47,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-02-21 20:28:47,878 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:28:47,878 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:28:47,878 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 20:28:47,878 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:28:47,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:28:47,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1925368272, now seen corresponding path program 3 times [2021-02-21 20:28:47,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:28:47,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1791442419] [2021-02-21 20:28:47,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:28:47,883 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:28:47,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:47,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:47,924 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:47,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:47,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:47,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:47,930 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:47,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:28:47,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:47,960 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:47,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:47,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-21 20:28:47,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:47,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:47,996 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:48,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:48,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:48,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:48,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:48,049 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:48,050 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:48,051 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:48,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:48,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:48,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:48,091 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:48,091 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:48,092 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:48,093 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:48,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:48,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:48,107 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:48,108 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:48,109 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:48,109 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:48,124 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-02-21 20:28:48,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1791442419] [2021-02-21 20:28:48,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:28:48,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 20:28:48,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790449784] [2021-02-21 20:28:48,126 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 20:28:48,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:28:48,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 20:28:48,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-02-21 20:28:48,127 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 9 states. [2021-02-21 20:28:48,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:28:48,449 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2021-02-21 20:28:48,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-21 20:28:48,450 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 48 [2021-02-21 20:28:48,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:28:48,452 INFO L225 Difference]: With dead ends: 52 [2021-02-21 20:28:48,452 INFO L226 Difference]: Without dead ends: 46 [2021-02-21 20:28:48,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2021-02-21 20:28:48,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-02-21 20:28:48,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-02-21 20:28:48,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2021-02-21 20:28:48,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2021-02-21 20:28:48,468 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 48 [2021-02-21 20:28:48,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:28:48,468 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2021-02-21 20:28:48,468 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 20:28:48,468 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2021-02-21 20:28:48,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-02-21 20:28:48,470 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:28:48,471 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:28:48,471 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 20:28:48,471 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:28:48,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:28:48,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1702046426, now seen corresponding path program 4 times [2021-02-21 20:28:48,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:28:48,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1677140561] [2021-02-21 20:28:48,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:28:48,475 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:28:48,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:48,510 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:48,510 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:48,511 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:48,512 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:48,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:48,515 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:48,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:28:48,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:48,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:48,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:48,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-21 20:28:48,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:48,568 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:48,568 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:48,574 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:48,575 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:48,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:48,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:48,599 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:48,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:48,601 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:48,602 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:48,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:48,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:48,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:48,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:48,628 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:48,628 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:48,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:48,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:48,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:48,648 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:48,649 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:48,650 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:48,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:48,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:48,666 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:48,667 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:48,668 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:48,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:48,687 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-02-21 20:28:48,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1677140561] [2021-02-21 20:28:48,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:28:48,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 20:28:48,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472940494] [2021-02-21 20:28:48,689 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 20:28:48,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:28:48,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 20:28:48,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-02-21 20:28:48,691 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 10 states. [2021-02-21 20:28:49,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:28:49,016 INFO L93 Difference]: Finished difference Result 57 states and 58 transitions. [2021-02-21 20:28:49,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-21 20:28:49,017 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 56 [2021-02-21 20:28:49,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:28:49,022 INFO L225 Difference]: With dead ends: 57 [2021-02-21 20:28:49,022 INFO L226 Difference]: Without dead ends: 51 [2021-02-21 20:28:49,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2021-02-21 20:28:49,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-02-21 20:28:49,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-02-21 20:28:49,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-02-21 20:28:49,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2021-02-21 20:28:49,062 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 56 [2021-02-21 20:28:49,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:28:49,063 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2021-02-21 20:28:49,063 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 20:28:49,063 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2021-02-21 20:28:49,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-02-21 20:28:49,065 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:28:49,065 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:28:49,065 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 20:28:49,065 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:28:49,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:28:49,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1874632176, now seen corresponding path program 5 times [2021-02-21 20:28:49,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:28:49,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839367939] [2021-02-21 20:28:49,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:28:49,069 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:28:49,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:49,106 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:49,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:49,114 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:49,115 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:28:49,125 WARN L141 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-02-21 20:28:49,126 WARN L147 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size 7 [2021-02-21 20:28:49,133 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:49,134 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:49,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:28:49,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:49,166 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:49,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:49,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-21 20:28:49,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:49,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:49,198 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:49,204 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:49,205 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:28:49,217 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:49,218 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:28:49,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:49,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:49,267 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:49,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:49,272 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:49,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:28:49,288 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:49,289 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:28:49,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:49,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:49,327 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:49,328 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:49,331 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:49,332 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:28:49,347 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:49,355 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:28:49,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:49,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:49,403 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:49,404 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:49,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:49,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:28:49,424 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:49,425 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:28:49,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:49,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:49,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:49,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:49,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:49,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:49,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:49,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:28:49,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:49,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:49,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:49,520 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:49,521 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:49,522 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:49,556 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-02-21 20:28:49,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839367939] [2021-02-21 20:28:49,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:28:49,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-21 20:28:49,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394519342] [2021-02-21 20:28:49,558 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-21 20:28:49,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:28:49,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-21 20:28:49,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-21 20:28:49,559 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 16 states. [2021-02-21 20:28:50,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:28:50,856 INFO L93 Difference]: Finished difference Result 62 states and 63 transitions. [2021-02-21 20:28:50,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-02-21 20:28:50,857 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 64 [2021-02-21 20:28:50,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:28:50,858 INFO L225 Difference]: With dead ends: 62 [2021-02-21 20:28:50,858 INFO L226 Difference]: Without dead ends: 56 [2021-02-21 20:28:50,860 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=123, Invalid=1067, Unknown=0, NotChecked=0, Total=1190 [2021-02-21 20:28:50,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-02-21 20:28:50,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-02-21 20:28:50,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-02-21 20:28:50,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2021-02-21 20:28:50,877 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 64 [2021-02-21 20:28:50,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:28:50,877 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2021-02-21 20:28:50,877 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-21 20:28:50,878 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2021-02-21 20:28:50,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-02-21 20:28:50,879 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:28:50,879 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:28:50,879 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 20:28:50,879 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:28:50,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:28:50,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1809628826, now seen corresponding path program 6 times [2021-02-21 20:28:50,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:28:50,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1926208083] [2021-02-21 20:28:50,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:28:50,883 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:28:50,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:50,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:50,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:50,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:50,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:50,918 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:50,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:50,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:28:50,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:50,947 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:50,948 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:28:50,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-21 20:28:50,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:50,968 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:50,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:50,975 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:50,975 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:50,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:50,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:50,999 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:51,000 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:51,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:51,001 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:51,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:51,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:51,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:51,035 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:51,037 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:51,038 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:51,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:51,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:51,059 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:51,060 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:51,061 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:51,061 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:51,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:51,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:51,080 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:51,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:51,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:51,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:51,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:51,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:51,101 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:51,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:51,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:51,103 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:51,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 20:28:51,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:28:51,121 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:51,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:51,123 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:28:51,123 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:28:51,152 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-02-21 20:28:51,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1926208083] [2021-02-21 20:28:51,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:28:51,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-21 20:28:51,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977014369] [2021-02-21 20:28:51,153 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-21 20:28:51,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:28:51,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-21 20:28:51,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-02-21 20:28:51,154 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand 12 states. [2021-02-21 20:28:51,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:28:51,639 INFO L93 Difference]: Finished difference Result 56 states and 57 transitions. [2021-02-21 20:28:51,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 20:28:51,640 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2021-02-21 20:28:51,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:28:51,641 INFO L225 Difference]: With dead ends: 56 [2021-02-21 20:28:51,641 INFO L226 Difference]: Without dead ends: 0 [2021-02-21 20:28:51,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-02-21 20:28:51,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-21 20:28:51,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-21 20:28:51,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-21 20:28:51,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-21 20:28:51,643 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 72 [2021-02-21 20:28:51,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:28:51,643 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-21 20:28:51,643 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-21 20:28:51,643 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-21 20:28:51,643 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-21 20:28:51,644 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-21 20:28:51,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-21 20:28:52,206 WARN L202 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 41 [2021-02-21 20:28:52,549 WARN L202 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 41 [2021-02-21 20:28:52,866 WARN L202 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 37 [2021-02-21 20:28:53,078 WARN L202 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 37 [2021-02-21 20:28:53,493 WARN L202 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 51 [2021-02-21 20:28:53,502 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2021-02-21 20:28:53,502 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 4) no Hoare annotation was computed. [2021-02-21 20:28:53,503 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2021-02-21 20:28:53,503 INFO L192 CegarLoopUtils]: At program point L4-3(line 4) the Hoare annotation is: true [2021-02-21 20:28:53,503 INFO L192 CegarLoopUtils]: At program point L4-4(line 4) the Hoare annotation is: true [2021-02-21 20:28:53,503 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 20:28:53,503 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-21 20:28:53,503 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 4) the Hoare annotation is: true [2021-02-21 20:28:53,504 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-02-21 20:28:53,504 INFO L192 CegarLoopUtils]: At program point L4(line 4) the Hoare annotation is: true [2021-02-21 20:28:53,504 INFO L192 CegarLoopUtils]: At program point L4-1(line 4) the Hoare annotation is: true [2021-02-21 20:28:53,504 INFO L192 CegarLoopUtils]: At program point L4-2(line 4) the Hoare annotation is: true [2021-02-21 20:28:53,504 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-21 20:28:53,504 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-21 20:28:53,504 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 20:28:53,505 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-21 20:28:53,505 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-21 20:28:53,505 INFO L185 CegarLoopUtils]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) the Hoare annotation is: false [2021-02-21 20:28:53,505 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 11 17) the Hoare annotation is: true [2021-02-21 20:28:53,505 INFO L185 CegarLoopUtils]: At program point mainEXIT(lines 11 17) the Hoare annotation is: (<= 5 main_~input~0) [2021-02-21 20:28:53,505 INFO L185 CegarLoopUtils]: At program point L15(line 15) the Hoare annotation is: false [2021-02-21 20:28:53,505 INFO L185 CegarLoopUtils]: At program point L14(lines 14 16) the Hoare annotation is: (and (< 4 main_~result~0) (<= 5 main_~input~0) (<= main_~result~0 5)) [2021-02-21 20:28:53,506 INFO L185 CegarLoopUtils]: At program point L15-1(line 15) the Hoare annotation is: false [2021-02-21 20:28:53,506 INFO L185 CegarLoopUtils]: At program point L13(line 13) the Hoare annotation is: (and (<= main_~input~0 5) (<= 5 main_~input~0)) [2021-02-21 20:28:53,506 INFO L185 CegarLoopUtils]: At program point L13-1(line 13) the Hoare annotation is: (and (<= |main_#t~ret8| 5) (<= 5 |main_#t~ret8|) (<= 5 main_~input~0)) [2021-02-21 20:28:53,506 INFO L185 CegarLoopUtils]: At program point L14-2(lines 11 17) the Hoare annotation is: (<= 5 main_~input~0) [2021-02-21 20:28:53,506 INFO L185 CegarLoopUtils]: At program point L13-2(line 13) the Hoare annotation is: (and (<= |main_#t~ret8| 5) (<= 5 |main_#t~ret8|) (<= 5 main_~input~0)) [2021-02-21 20:28:53,506 INFO L185 CegarLoopUtils]: At program point L13-3(line 13) the Hoare annotation is: (and (<= |main_#t~ret8| 5) (< 4 main_~result~0) (<= 5 |main_#t~ret8|) (<= 5 main_~input~0) (<= main_~result~0 5)) [2021-02-21 20:28:53,507 INFO L185 CegarLoopUtils]: At program point idFINAL(lines 6 9) the Hoare annotation is: (let ((.cse0 (= |id_#in~x| id_~x))) (or (and (<= 1 |id_#in~x|) .cse0 (<= |id_#res| 1) (<= 1 |id_#res|) (<= |id_#in~x| 1)) (and (<= |id_#res| 4) (<= 4 |id_#res|) .cse0 (<= |id_#in~x| 4) (<= 4 |id_#in~x|)) (and (<= 2 |id_#res|) .cse0 (<= |id_#res| 2) (<= 2 |id_#in~x|) (<= |id_#in~x| 2)) (and .cse0 (<= 6 |id_#in~x|)) (and (<= |id_#res| 3) (<= 3 |id_#in~x|) .cse0 (<= |id_#in~x| 3) (<= 3 |id_#res|)) (and .cse0 (= |id_#res| 0) (= |id_#in~x| 0)) (and (<= 5 |id_#res|) (<= 5 |id_#in~x|) .cse0 (<= |id_#res| 5)))) [2021-02-21 20:28:53,507 INFO L185 CegarLoopUtils]: At program point idEXIT(lines 6 9) the Hoare annotation is: (let ((.cse0 (= |id_#in~x| id_~x))) (or (and (<= 1 |id_#in~x|) .cse0 (<= |id_#res| 1) (<= 1 |id_#res|) (<= |id_#in~x| 1)) (and (<= |id_#res| 4) (<= 4 |id_#res|) .cse0 (<= |id_#in~x| 4) (<= 4 |id_#in~x|)) (and (<= 2 |id_#res|) .cse0 (<= |id_#res| 2) (<= 2 |id_#in~x|) (<= |id_#in~x| 2)) (and .cse0 (<= 6 |id_#in~x|)) (and (<= |id_#res| 3) (<= 3 |id_#in~x|) .cse0 (<= |id_#in~x| 3) (<= 3 |id_#res|)) (and .cse0 (= |id_#res| 0) (= |id_#in~x| 0)) (and (<= 5 |id_#res|) (<= 5 |id_#in~x|) .cse0 (<= |id_#res| 5)))) [2021-02-21 20:28:53,508 INFO L185 CegarLoopUtils]: At program point L8(line 8) the Hoare annotation is: (= |id_#in~x| id_~x) [2021-02-21 20:28:53,508 INFO L192 CegarLoopUtils]: At program point idENTRY(lines 6 9) the Hoare annotation is: true [2021-02-21 20:28:53,508 INFO L185 CegarLoopUtils]: At program point L7(line 7) the Hoare annotation is: (= |id_#in~x| id_~x) [2021-02-21 20:28:53,508 INFO L185 CegarLoopUtils]: At program point L8-1(line 8) the Hoare annotation is: (let ((.cse0 (= |id_#in~x| id_~x))) (or (and (<= 5 |id_#in~x|) .cse0 (<= 4 |id_#t~ret7|) (<= |id_#t~ret7| 4)) (and .cse0 (<= |id_#in~x| 4) (<= 3 |id_#t~ret7|) (<= |id_#t~ret7| 3) (<= 4 |id_#in~x|)) (and .cse0 (<= 6 |id_#in~x|)) (and .cse0 (<= |id_#t~ret7| 1) (<= 1 |id_#t~ret7|) (<= 2 |id_#in~x|) (<= |id_#in~x| 2)) (and (<= 1 |id_#in~x|) .cse0 (= |id_#t~ret7| 0) (<= |id_#in~x| 1)) (and (<= 3 |id_#in~x|) .cse0 (<= |id_#t~ret7| 2) (<= 2 |id_#t~ret7|) (<= |id_#in~x| 3)))) [2021-02-21 20:28:53,508 INFO L185 CegarLoopUtils]: At program point L7-1(line 7) the Hoare annotation is: (and (= |id_#in~x| id_~x) (= |id_#in~x| 0)) [2021-02-21 20:28:53,508 INFO L185 CegarLoopUtils]: At program point L8-2(line 8) the Hoare annotation is: (let ((.cse0 (= |id_#in~x| id_~x))) (or (and (<= 5 |id_#in~x|) .cse0 (<= 4 |id_#t~ret7|) (<= |id_#t~ret7| 4)) (and .cse0 (<= |id_#in~x| 4) (<= 3 |id_#t~ret7|) (<= |id_#t~ret7| 3) (<= 4 |id_#in~x|)) (and .cse0 (<= 6 |id_#in~x|)) (and .cse0 (<= |id_#t~ret7| 1) (<= 1 |id_#t~ret7|) (<= 2 |id_#in~x|) (<= |id_#in~x| 2)) (and (<= 1 |id_#in~x|) .cse0 (= |id_#t~ret7| 0) (<= |id_#in~x| 1)) (and (<= 3 |id_#in~x|) .cse0 (<= |id_#t~ret7| 2) (<= 2 |id_#t~ret7|) (<= |id_#in~x| 3)))) [2021-02-21 20:28:53,509 INFO L185 CegarLoopUtils]: At program point L8-3(line 8) the Hoare annotation is: (and (let ((.cse0 (= |id_#in~x| id_~x))) (or (and (<= 5 |id_#res|) .cse0 (<= |id_#res| 5) (<= 4 |id_#t~ret7|) (<= |id_#t~ret7| 4)) (and .cse0 (<= 6 |id_#in~x|)) (and .cse0 (<= |id_#in~x| 4)))) (or (<= 5 |id_#in~x|) (and (<= |id_#res| 4) (<= 4 |id_#res|) (<= 3 |id_#t~ret7|) (<= |id_#t~ret7| 3) (<= 4 |id_#in~x|)) (and (<= 1 |id_#in~x|) (<= |id_#res| 1) (= |id_#t~ret7| 0) (<= 1 |id_#res|) (<= |id_#in~x| 1)) (and (<= |id_#res| 3) (<= 3 |id_#in~x|) (<= |id_#t~ret7| 2) (<= 2 |id_#t~ret7|) (<= |id_#in~x| 3) (<= 3 |id_#res|)) (and (<= 2 |id_#res|) (<= |id_#t~ret7| 1) (<= |id_#res| 2) (<= 1 |id_#t~ret7|) (<= 2 |id_#in~x|) (<= |id_#in~x| 2)))) [2021-02-21 20:28:53,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 08:28:53 BoogieIcfgContainer [2021-02-21 20:28:53,528 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 20:28:53,530 INFO L168 Benchmark]: Toolchain (without parser) took 8687.17 ms. Allocated memory was 151.0 MB in the beginning and 264.2 MB in the end (delta: 113.2 MB). Free memory was 127.3 MB in the beginning and 241.2 MB in the end (delta: -114.0 MB). Peak memory consumption was 121.7 MB. Max. memory is 8.0 GB. [2021-02-21 20:28:53,530 INFO L168 Benchmark]: CDTParser took 1.31 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 126.1 MB in the end (delta: 83.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 20:28:53,531 INFO L168 Benchmark]: CACSL2BoogieTranslator took 364.06 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 117.2 MB in the end (delta: 8.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-21 20:28:53,532 INFO L168 Benchmark]: Boogie Preprocessor took 54.41 ms. Allocated memory is still 151.0 MB. Free memory was 117.0 MB in the beginning and 115.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-21 20:28:53,532 INFO L168 Benchmark]: RCFGBuilder took 356.30 ms. Allocated memory is still 151.0 MB. Free memory was 115.7 MB in the beginning and 102.7 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-02-21 20:28:53,533 INFO L168 Benchmark]: TraceAbstraction took 7879.81 ms. Allocated memory was 151.0 MB in the beginning and 264.2 MB in the end (delta: 113.2 MB). Free memory was 102.3 MB in the beginning and 241.2 MB in the end (delta: -139.0 MB). Peak memory consumption was 96.5 MB. Max. memory is 8.0 GB. [2021-02-21 20:28:53,535 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.31 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 126.1 MB in the end (delta: 83.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 364.06 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 117.2 MB in the end (delta: 8.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 54.41 ms. Allocated memory is still 151.0 MB. Free memory was 117.0 MB in the beginning and 115.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 356.30 ms. Allocated memory is still 151.0 MB. Free memory was 115.7 MB in the beginning and 102.7 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7879.81 ms. Allocated memory was 151.0 MB in the beginning and 264.2 MB in the end (delta: 113.2 MB). Free memory was 102.3 MB in the beginning and 241.2 MB in the end (delta: -139.0 MB). Peak memory consumption was 96.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: 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 - ProcedureContractResult [Line: 11]: Procedure Contract for main Derived contract for procedure main: 5 <= input - ProcedureContractResult [Line: 6]: Procedure Contract for id Derived contract for procedure id: (((((((((1 <= \old(x) && \old(x) == x) && \result <= 1) && 1 <= \result) && \old(x) <= 1) || ((((\result <= 4 && 4 <= \result) && \old(x) == x) && \old(x) <= 4) && 4 <= \old(x))) || ((((2 <= \result && \old(x) == x) && \result <= 2) && 2 <= \old(x)) && \old(x) <= 2)) || (\old(x) == x && 6 <= \old(x))) || ((((\result <= 3 && 3 <= \old(x)) && \old(x) == x) && \old(x) <= 3) && 3 <= \result)) || ((\old(x) == x && \result == 0) && \old(x) == 0)) || (((5 <= \result && 5 <= \old(x)) && \old(x) == x) && \result <= 5) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.8s, OverallIterations: 7, TraceHistogramMax: 7, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 209 SDtfs, 288 SDslu, 516 SDs, 0 SdLazy, 985 SolverSat, 83 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 178 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 34 LocationsWithAnnotation, 43 PreInvPairs, 152 NumberOfFragments, 581 HoareAnnotationTreeSize, 43 FomulaSimplifications, 2111 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 34 FomulaSimplificationsInter, 2545 FormulaSimplificationTreeSizeReductionInter, 1.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...