/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/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/recursive/Fibonacci01-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 01:32:49,152 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 01:32:49,157 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 01:32:49,213 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-22 01:32:49,243 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 01:32:49,246 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 01:32:49,248 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 01:32:49,250 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 01:32:49,253 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 01:32:49,254 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 01:32:49,261 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 01:32:49,270 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 01:32:49,272 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 01:32:49,274 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 01:32:49,276 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 01:32:49,278 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 01:32:49,287 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-22 01:32:49,300 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 01:32:49,301 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 01:32:49,301 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 01:32:49,303 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 01:32:49,327 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 01:32:49,327 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 01:32:49,331 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 01:32:49,332 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 01:32:49,332 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 01:32:49,332 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 01:32:49,332 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 01:32:49,333 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 01:32:49,333 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 01:32:49,333 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 01:32:49,334 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 01:32:49,335 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 01:32:49,335 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 01:32:49,336 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 01:32:49,336 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 01:32:49,336 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 01:32:49,337 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 01:32:49,337 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 01:32:49,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:32:49,337 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 01:32:49,338 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 01:32:49,338 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 01:32:49,338 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 01:32:49,338 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 01:32:49,761 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 01:32:49,793 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 01:32:49,796 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 01:32:49,798 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 01:32:49,798 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 01:32:49,799 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Fibonacci01-1.c [2021-02-22 01:32:49,889 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e5f48c32/e905f828ecf541189becab00de376b7b/FLAG669d6cf31 [2021-02-22 01:32:50,455 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 01:32:50,455 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/Fibonacci01-1.c [2021-02-22 01:32:50,465 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e5f48c32/e905f828ecf541189becab00de376b7b/FLAG669d6cf31 [2021-02-22 01:32:50,859 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e5f48c32/e905f828ecf541189becab00de376b7b [2021-02-22 01:32:50,863 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 01:32:50,880 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 01:32:50,886 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 01:32:50,887 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 01:32:50,891 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 01:32:50,892 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:32:50" (1/1) ... [2021-02-22 01:32:50,893 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@841a53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:50, skipping insertion in model container [2021-02-22 01:32:50,893 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:32:50" (1/1) ... [2021-02-22 01:32:50,902 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 01:32:50,920 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 01:32:51,106 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/Fibonacci01-1.c[804,817] [2021-02-22 01:32:51,109 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:32:51,130 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 01:32:51,148 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/Fibonacci01-1.c[804,817] [2021-02-22 01:32:51,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:32:51,166 INFO L208 MainTranslator]: Completed translation [2021-02-22 01:32:51,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:51 WrapperNode [2021-02-22 01:32:51,166 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 01:32:51,168 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 01:32:51,168 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 01:32:51,168 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 01:32:51,182 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:51" (1/1) ... [2021-02-22 01:32:51,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:51" (1/1) ... [2021-02-22 01:32:51,190 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:51" (1/1) ... [2021-02-22 01:32:51,190 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:51" (1/1) ... [2021-02-22 01:32:51,196 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:51" (1/1) ... [2021-02-22 01:32:51,198 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:51" (1/1) ... [2021-02-22 01:32:51,199 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:51" (1/1) ... [2021-02-22 01:32:51,201 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 01:32:51,202 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 01:32:51,202 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 01:32:51,202 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 01:32:51,203 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:51" (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 [2021-02-22 01:32:51,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 01:32:51,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 01:32:51,327 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 01:32:51,327 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2021-02-22 01:32:51,327 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 01:32:51,327 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 01:32:51,327 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 01:32:51,328 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 01:32:51,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 01:32:51,329 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 01:32:51,329 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2021-02-22 01:32:51,330 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 01:32:51,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 01:32:51,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 01:32:51,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 01:32:51,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 01:32:51,332 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 01:32:51,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 01:32:51,794 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 01:32:51,795 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-22 01:32:51,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:32:51 BoogieIcfgContainer [2021-02-22 01:32:51,797 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 01:32:51,799 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 01:32:51,799 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 01:32:51,802 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 01:32:51,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 01:32:50" (1/3) ... [2021-02-22 01:32:51,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24e4d7cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:32:51, skipping insertion in model container [2021-02-22 01:32:51,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:51" (2/3) ... [2021-02-22 01:32:51,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24e4d7cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:32:51, skipping insertion in model container [2021-02-22 01:32:51,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:32:51" (3/3) ... [2021-02-22 01:32:51,806 INFO L111 eAbstractionObserver]: Analyzing ICFG Fibonacci01-1.c [2021-02-22 01:32:51,812 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 01:32:51,817 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 01:32:51,835 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 01:32:51,858 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 01:32:51,859 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 01:32:51,859 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 01:32:51,859 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 01:32:51,859 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 01:32:51,859 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 01:32:51,859 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 01:32:51,859 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 01:32:51,873 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2021-02-22 01:32:51,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-02-22 01:32:51,883 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:32:51,884 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:32:51,884 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:32:51,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:32:51,891 INFO L82 PathProgramCache]: Analyzing trace with hash 754086871, now seen corresponding path program 1 times [2021-02-22 01:32:51,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:32:51,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1569450406] [2021-02-22 01:32:51,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:32:51,981 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:32:52,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:52,138 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:52,139 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:52,148 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:52,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:32:52,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:52,189 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:32:52,213 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:52,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:52,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:32:52,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:52,349 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:52,352 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:52,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-22 01:32:52,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:52,390 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:52,391 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:52,408 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:52,409 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:52,432 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:52,436 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-22 01:32:52,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:32:52,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1569450406] [2021-02-22 01:32:52,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:32:52,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-22 01:32:52,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880318650] [2021-02-22 01:32:52,492 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-22 01:32:52,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:32:52,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-22 01:32:52,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-02-22 01:32:52,513 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 8 states. [2021-02-22 01:32:53,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:32:53,147 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2021-02-22 01:32:53,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-22 01:32:53,149 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2021-02-22 01:32:53,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:32:53,159 INFO L225 Difference]: With dead ends: 59 [2021-02-22 01:32:53,159 INFO L226 Difference]: Without dead ends: 39 [2021-02-22 01:32:53,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-02-22 01:32:53,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-02-22 01:32:53,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-02-22 01:32:53,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-02-22 01:32:53,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2021-02-22 01:32:53,223 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 27 [2021-02-22 01:32:53,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:32:53,224 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2021-02-22 01:32:53,224 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-22 01:32:53,224 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2021-02-22 01:32:53,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-22 01:32:53,226 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:32:53,227 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:32:53,227 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 01:32:53,227 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:32:53,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:32:53,228 INFO L82 PathProgramCache]: Analyzing trace with hash -213937358, now seen corresponding path program 1 times [2021-02-22 01:32:53,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:32:53,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402117384] [2021-02-22 01:32:53,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:32:53,232 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:32:53,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:53,301 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:53,301 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:53,303 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:53,304 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:32:53,310 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-22 01:32:53,311 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-22 01:32:53,318 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:53,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:53,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:32:53,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:53,361 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:53,363 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:53,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-22 01:32:53,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:53,378 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:53,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:53,386 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:53,389 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:53,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:53,403 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-22 01:32:53,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:32:53,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1402117384] [2021-02-22 01:32:53,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:32:53,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-22 01:32:53,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560937269] [2021-02-22 01:32:53,435 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-22 01:32:53,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:32:53,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-22 01:32:53,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-02-22 01:32:53,436 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 8 states. [2021-02-22 01:32:53,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:32:53,803 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2021-02-22 01:32:53,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-22 01:32:53,804 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2021-02-22 01:32:53,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:32:53,806 INFO L225 Difference]: With dead ends: 47 [2021-02-22 01:32:53,806 INFO L226 Difference]: Without dead ends: 41 [2021-02-22 01:32:53,808 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-02-22 01:32:53,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-02-22 01:32:53,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2021-02-22 01:32:53,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-02-22 01:32:53,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2021-02-22 01:32:53,824 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 28 [2021-02-22 01:32:53,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:32:53,825 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2021-02-22 01:32:53,825 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-22 01:32:53,825 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2021-02-22 01:32:53,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-02-22 01:32:53,827 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:32:53,827 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:32:53,827 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 01:32:53,827 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:32:53,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:32:53,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1480948785, now seen corresponding path program 1 times [2021-02-22 01:32:53,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:32:53,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509710658] [2021-02-22 01:32:53,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:32:53,832 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:32:53,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:53,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:53,870 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:53,871 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:53,871 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:53,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:32:53,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:53,901 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:53,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:53,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-22 01:32:53,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:53,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:53,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:53,919 WARN L141 QuantifierPusher]: treesize reduction 6, result has 33.3 percent of original size [2021-02-22 01:32:53,919 WARN L147 QuantifierPusher]: treesize reduction 6, result has 33.3 percent of original size 3 [2021-02-22 01:32:53,924 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:53,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:32:53,930 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:53,931 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:53,931 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:53,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:53,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:32:53,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:53,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:53,941 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:53,947 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:53,948 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:53,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-02-22 01:32:53,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:53,959 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:53,960 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:53,964 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-02-22 01:32:53,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [509710658] [2021-02-22 01:32:53,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:32:53,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-22 01:32:53,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009708065] [2021-02-22 01:32:53,966 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-22 01:32:53,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:32:53,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-22 01:32:53,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-02-22 01:32:53,967 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 7 states. [2021-02-22 01:32:54,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:32:54,241 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2021-02-22 01:32:54,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-22 01:32:54,242 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 44 [2021-02-22 01:32:54,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:32:54,244 INFO L225 Difference]: With dead ends: 63 [2021-02-22 01:32:54,244 INFO L226 Difference]: Without dead ends: 41 [2021-02-22 01:32:54,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-02-22 01:32:54,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-02-22 01:32:54,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-02-22 01:32:54,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2021-02-22 01:32:54,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2021-02-22 01:32:54,260 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 44 [2021-02-22 01:32:54,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:32:54,261 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2021-02-22 01:32:54,261 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-22 01:32:54,261 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2021-02-22 01:32:54,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-02-22 01:32:54,263 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:32:54,263 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:32:54,264 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 01:32:54,264 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:32:54,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:32:54,265 INFO L82 PathProgramCache]: Analyzing trace with hash -189469004, now seen corresponding path program 1 times [2021-02-22 01:32:54,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:32:54,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1318832767] [2021-02-22 01:32:54,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:32:54,268 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:32:54,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:54,308 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:54,309 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:54,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:54,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:32:54,314 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:54,315 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:32:54,319 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:54,322 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:54,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:32:54,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:54,366 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:54,367 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:54,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-22 01:32:54,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:54,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:54,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:54,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:54,409 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-22 01:32:54,420 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:54,421 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-22 01:32:54,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:54,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:32:54,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:32:54,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:54,479 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:54,480 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:54,481 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:54,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:54,496 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:54,498 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:54,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-22 01:32:54,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:54,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:54,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:54,543 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:54,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:54,562 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-02-22 01:32:54,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1318832767] [2021-02-22 01:32:54,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:32:54,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-22 01:32:54,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344089298] [2021-02-22 01:32:54,565 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-22 01:32:54,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:32:54,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-22 01:32:54,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-02-22 01:32:54,567 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 12 states. [2021-02-22 01:32:55,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:32:55,391 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2021-02-22 01:32:55,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-22 01:32:55,392 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2021-02-22 01:32:55,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:32:55,395 INFO L225 Difference]: With dead ends: 59 [2021-02-22 01:32:55,395 INFO L226 Difference]: Without dead ends: 53 [2021-02-22 01:32:55,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2021-02-22 01:32:55,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-02-22 01:32:55,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2021-02-22 01:32:55,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2021-02-22 01:32:55,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2021-02-22 01:32:55,413 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 45 [2021-02-22 01:32:55,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:32:55,414 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2021-02-22 01:32:55,414 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-22 01:32:55,414 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2021-02-22 01:32:55,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-02-22 01:32:55,417 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:32:55,417 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 2, 2, 2, 2, 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, 1] [2021-02-22 01:32:55,417 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-22 01:32:55,417 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:32:55,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:32:55,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1181749608, now seen corresponding path program 1 times [2021-02-22 01:32:55,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:32:55,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1968532966] [2021-02-22 01:32:55,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:32:55,421 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:32:55,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:55,466 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:55,468 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:55,469 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:55,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:55,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:32:55,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:55,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:55,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:55,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-22 01:32:55,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:55,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:55,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:55,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:55,520 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:55,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:55,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:55,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:32:55,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:55,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:55,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:55,545 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:55,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:55,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-22 01:32:55,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:55,592 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:55,592 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:55,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:55,594 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:32:55,604 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:55,608 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:55,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:32:55,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:55,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:55,629 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:55,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-22 01:32:55,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:55,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:55,642 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:55,652 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-02-22 01:32:55,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1968532966] [2021-02-22 01:32:55,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:32:55,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-22 01:32:55,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860033175] [2021-02-22 01:32:55,655 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-22 01:32:55,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:32:55,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-22 01:32:55,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-02-22 01:32:55,656 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand 8 states. [2021-02-22 01:32:56,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:32:56,085 INFO L93 Difference]: Finished difference Result 84 states and 108 transitions. [2021-02-22 01:32:56,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-22 01:32:56,086 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 64 [2021-02-22 01:32:56,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:32:56,088 INFO L225 Difference]: With dead ends: 84 [2021-02-22 01:32:56,088 INFO L226 Difference]: Without dead ends: 51 [2021-02-22 01:32:56,089 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-02-22 01:32:56,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-02-22 01:32:56,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-02-22 01:32:56,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-02-22 01:32:56,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2021-02-22 01:32:56,105 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 64 [2021-02-22 01:32:56,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:32:56,106 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2021-02-22 01:32:56,106 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-22 01:32:56,106 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2021-02-22 01:32:56,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-02-22 01:32:56,107 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:32:56,108 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1] [2021-02-22 01:32:56,108 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-22 01:32:56,108 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:32:56,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:32:56,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1062763502, now seen corresponding path program 2 times [2021-02-22 01:32:56,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:32:56,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1083205661] [2021-02-22 01:32:56,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:32:56,111 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:32:56,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:56,136 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:56,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:56,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:56,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:56,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:32:56,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:56,164 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:56,165 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:56,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-22 01:32:56,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:56,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:56,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:56,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:56,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:56,184 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:56,185 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:56,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:32:56,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:56,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:56,198 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:56,209 WARN L141 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-02-22 01:32:56,212 WARN L147 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size 7 [2021-02-22 01:32:56,221 WARN L141 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-02-22 01:32:56,222 WARN L147 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size 7 [2021-02-22 01:32:56,231 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:56,232 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:56,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:32:56,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:56,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:56,247 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:56,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-22 01:32:56,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:56,251 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:56,252 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:56,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-22 01:32:56,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:56,258 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:56,259 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:56,259 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:56,260 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:56,274 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-02-22 01:32:56,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1083205661] [2021-02-22 01:32:56,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:32:56,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-22 01:32:56,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479724362] [2021-02-22 01:32:56,276 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-22 01:32:56,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:32:56,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-22 01:32:56,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-02-22 01:32:56,277 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand 9 states. [2021-02-22 01:32:56,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:32:56,609 INFO L93 Difference]: Finished difference Result 85 states and 99 transitions. [2021-02-22 01:32:56,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-22 01:32:56,609 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2021-02-22 01:32:56,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:32:56,611 INFO L225 Difference]: With dead ends: 85 [2021-02-22 01:32:56,611 INFO L226 Difference]: Without dead ends: 51 [2021-02-22 01:32:56,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-02-22 01:32:56,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-02-22 01:32:56,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-02-22 01:32:56,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-02-22 01:32:56,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2021-02-22 01:32:56,627 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 62 [2021-02-22 01:32:56,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:32:56,628 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2021-02-22 01:32:56,628 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-22 01:32:56,628 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2021-02-22 01:32:56,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-02-22 01:32:56,629 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:32:56,630 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1] [2021-02-22 01:32:56,630 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-22 01:32:56,630 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:32:56,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:32:56,631 INFO L82 PathProgramCache]: Analyzing trace with hash -745129785, now seen corresponding path program 3 times [2021-02-22 01:32:56,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:32:56,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1061549878] [2021-02-22 01:32:56,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:32:56,633 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:32:56,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:56,661 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:56,662 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:56,663 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:56,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:32:56,667 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:56,667 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:32:56,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:56,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:56,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:32:56,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:56,700 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:56,700 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:56,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-22 01:32:56,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:56,718 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:56,719 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:56,726 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:56,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-22 01:32:56,738 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:56,739 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-22 01:32:56,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:56,748 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:32:56,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:32:56,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:56,770 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:56,770 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:56,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:56,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-22 01:32:56,786 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:56,786 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-22 01:32:56,789 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:56,789 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:32:56,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:32:56,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:56,796 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:56,797 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:56,797 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:56,798 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:56,809 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:56,809 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:56,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-22 01:32:56,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:56,826 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:56,827 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:56,827 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:56,830 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:56,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-22 01:32:56,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:56,850 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:56,851 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:56,853 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:56,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:56,876 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-02-22 01:32:56,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1061549878] [2021-02-22 01:32:56,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:32:56,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-22 01:32:56,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128544744] [2021-02-22 01:32:56,878 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-22 01:32:56,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:32:56,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-22 01:32:56,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-02-22 01:32:56,879 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand 14 states. [2021-02-22 01:32:57,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:32:57,793 INFO L93 Difference]: Finished difference Result 69 states and 79 transitions. [2021-02-22 01:32:57,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-22 01:32:57,793 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 63 [2021-02-22 01:32:57,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:32:57,795 INFO L225 Difference]: With dead ends: 69 [2021-02-22 01:32:57,795 INFO L226 Difference]: Without dead ends: 63 [2021-02-22 01:32:57,796 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=167, Invalid=703, Unknown=0, NotChecked=0, Total=870 [2021-02-22 01:32:57,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-02-22 01:32:57,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 53. [2021-02-22 01:32:57,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-02-22 01:32:57,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2021-02-22 01:32:57,813 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 63 [2021-02-22 01:32:57,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:32:57,814 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2021-02-22 01:32:57,814 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-22 01:32:57,814 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2021-02-22 01:32:57,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-02-22 01:32:57,815 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:32:57,816 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2021-02-22 01:32:57,816 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-22 01:32:57,816 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:32:57,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:32:57,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1589190530, now seen corresponding path program 4 times [2021-02-22 01:32:57,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:32:57,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213290470] [2021-02-22 01:32:57,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:32:57,819 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:32:57,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:57,850 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:57,851 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:57,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:57,852 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:57,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:32:57,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:57,876 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:57,877 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:57,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-22 01:32:57,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:57,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:57,896 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:57,897 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:57,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:57,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:57,902 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:57,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:32:57,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:57,913 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:57,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:57,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:57,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:32:57,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:57,930 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:57,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:32:57,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:57,942 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:57,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:57,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:57,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:57,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-22 01:32:57,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:57,956 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:57,956 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:57,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-22 01:32:57,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:57,970 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:57,971 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:57,972 WARN L141 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-02-22 01:32:57,973 WARN L147 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size 7 [2021-02-22 01:32:57,984 WARN L141 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-02-22 01:32:57,984 WARN L147 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size 7 [2021-02-22 01:32:57,996 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:57,997 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:58,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:32:58,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:58,013 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:58,015 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:58,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:32:58,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:58,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:58,019 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:58,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-22 01:32:58,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:58,023 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:58,023 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:58,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-22 01:32:58,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:58,028 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:58,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:58,059 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 17 proven. 42 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-02-22 01:32:58,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213290470] [2021-02-22 01:32:58,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:32:58,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-22 01:32:58,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044687822] [2021-02-22 01:32:58,060 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-22 01:32:58,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:32:58,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-22 01:32:58,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-02-22 01:32:58,061 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand 11 states. [2021-02-22 01:32:58,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:32:58,578 INFO L93 Difference]: Finished difference Result 106 states and 135 transitions. [2021-02-22 01:32:58,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-22 01:32:58,578 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 98 [2021-02-22 01:32:58,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:32:58,580 INFO L225 Difference]: With dead ends: 106 [2021-02-22 01:32:58,580 INFO L226 Difference]: Without dead ends: 70 [2021-02-22 01:32:58,581 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-02-22 01:32:58,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-02-22 01:32:58,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 64. [2021-02-22 01:32:58,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-02-22 01:32:58,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 76 transitions. [2021-02-22 01:32:58,603 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 76 transitions. Word has length 98 [2021-02-22 01:32:58,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:32:58,603 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 76 transitions. [2021-02-22 01:32:58,603 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-22 01:32:58,603 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 76 transitions. [2021-02-22 01:32:58,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-02-22 01:32:58,605 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:32:58,605 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 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] [2021-02-22 01:32:58,606 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-22 01:32:58,606 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:32:58,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:32:58,606 INFO L82 PathProgramCache]: Analyzing trace with hash -2037596062, now seen corresponding path program 5 times [2021-02-22 01:32:58,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:32:58,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1013298852] [2021-02-22 01:32:58,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:32:58,609 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:32:58,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:58,648 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:58,648 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:58,649 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:58,650 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:58,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:32:58,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:58,675 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:58,676 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:58,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-22 01:32:58,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:58,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:58,703 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:58,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:58,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:58,709 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:58,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:58,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:32:58,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:58,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:58,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:58,729 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:58,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:32:58,738 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:58,739 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:58,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:32:58,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:58,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:58,756 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:58,756 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:58,757 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:32:58,767 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:58,768 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:58,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:32:58,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:58,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:58,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:58,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:58,784 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:58,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-22 01:32:58,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:58,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:58,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:58,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-22 01:32:58,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:58,816 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:58,818 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:58,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-22 01:32:58,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:58,838 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:58,839 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:58,839 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:58,840 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:32:58,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:58,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:58,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:32:58,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:58,877 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:58,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:58,881 WARN L141 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-02-22 01:32:58,881 WARN L147 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size 7 [2021-02-22 01:32:58,896 WARN L141 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-02-22 01:32:58,897 WARN L147 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size 7 [2021-02-22 01:32:58,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:58,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:58,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:32:58,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:58,931 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:58,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:58,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:32:58,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:58,937 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:58,938 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:58,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-22 01:32:58,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:58,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:58,942 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:58,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-22 01:32:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:58,947 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:58,947 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:58,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-22 01:32:58,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:58,956 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:58,957 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:59,003 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 27 proven. 70 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-02-22 01:32:59,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1013298852] [2021-02-22 01:32:59,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:32:59,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-22 01:32:59,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7715908] [2021-02-22 01:32:59,005 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-22 01:32:59,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:32:59,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-22 01:32:59,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-02-22 01:32:59,006 INFO L87 Difference]: Start difference. First operand 64 states and 76 transitions. Second operand 15 states. [2021-02-22 01:32:59,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:32:59,798 INFO L93 Difference]: Finished difference Result 132 states and 174 transitions. [2021-02-22 01:32:59,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-22 01:32:59,799 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 134 [2021-02-22 01:32:59,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:32:59,804 INFO L225 Difference]: With dead ends: 132 [2021-02-22 01:32:59,804 INFO L226 Difference]: Without dead ends: 85 [2021-02-22 01:32:59,805 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2021-02-22 01:32:59,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-02-22 01:32:59,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 76. [2021-02-22 01:32:59,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2021-02-22 01:32:59,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 93 transitions. [2021-02-22 01:32:59,841 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 93 transitions. Word has length 134 [2021-02-22 01:32:59,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:32:59,843 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 93 transitions. [2021-02-22 01:32:59,843 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-22 01:32:59,843 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 93 transitions. [2021-02-22 01:32:59,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-02-22 01:32:59,844 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:32:59,844 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2021-02-22 01:32:59,845 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-22 01:32:59,845 INFO L428 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:32:59,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:32:59,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1069346308, now seen corresponding path program 6 times [2021-02-22 01:32:59,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:32:59,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [989068335] [2021-02-22 01:32:59,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:32:59,851 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:32:59,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:59,894 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:59,895 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:59,897 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:59,898 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:32:59,901 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:59,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:32:59,906 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:59,906 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:59,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:32:59,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:59,938 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:59,938 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:59,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-22 01:32:59,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:59,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:59,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:59,974 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:59,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-22 01:32:59,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:59,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-22 01:33:00,004 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:33:00,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:33:00,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:33:00,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:33:00,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:33:00,031 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:33:00,032 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:33:00,032 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-22 01:33:00,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:33:00,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-22 01:33:00,034 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:33:00,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:33:00,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:33:00,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:33:00,045 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:33:00,046 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:33:00,046 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:33:00,047 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-22 01:33:00,060 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:33:00,061 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-22 01:33:00,061 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:33:00,062 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:33:00,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:33:00,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:33:00,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:33:00,068 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:33:00,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:33:00,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:33:00,080 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:33:00,080 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:33:00,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-22 01:33:00,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:33:00,096 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:33:00,097 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:33:00,097 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:33:00,098 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:33:00,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-22 01:33:00,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:33:00,115 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:33:00,116 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:33:00,117 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:33:00,117 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:33:00,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-22 01:33:00,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:33:00,140 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:33:00,141 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:33:00,141 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:33:00,142 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:33:00,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:33:00,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:33:00,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:33:00,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:33:00,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-22 01:33:00,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:33:00,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:33:00,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:33:00,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:33:00,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:33:00,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-22 01:33:00,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:33:00,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:33:00,183 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:33:00,184 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:33:00,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:33:00,206 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-02-22 01:33:00,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [989068335] [2021-02-22 01:33:00,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:33:00,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-22 01:33:00,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550362461] [2021-02-22 01:33:00,207 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-22 01:33:00,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:33:00,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-22 01:33:00,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-02-22 01:33:00,208 INFO L87 Difference]: Start difference. First operand 76 states and 93 transitions. Second operand 16 states. [2021-02-22 01:33:01,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:33:01,082 INFO L93 Difference]: Finished difference Result 76 states and 93 transitions. [2021-02-22 01:33:01,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-22 01:33:01,082 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 98 [2021-02-22 01:33:01,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:33:01,083 INFO L225 Difference]: With dead ends: 76 [2021-02-22 01:33:01,083 INFO L226 Difference]: Without dead ends: 0 [2021-02-22 01:33:01,084 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=192, Invalid=800, Unknown=0, NotChecked=0, Total=992 [2021-02-22 01:33:01,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-22 01:33:01,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-22 01:33:01,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-22 01:33:01,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-22 01:33:01,085 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 98 [2021-02-22 01:33:01,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:33:01,085 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-22 01:33:01,085 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-22 01:33:01,086 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-22 01:33:01,086 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-22 01:33:01,086 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-22 01:33:01,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-22 01:33:02,829 WARN L202 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 21 [2021-02-22 01:33:02,955 WARN L202 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 17 [2021-02-22 01:33:03,157 WARN L202 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 17 [2021-02-22 01:33:03,332 WARN L202 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 22 [2021-02-22 01:33:03,628 WARN L202 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 19 [2021-02-22 01:33:03,833 WARN L202 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 19 [2021-02-22 01:33:04,000 WARN L202 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 21 [2021-02-22 01:33:04,341 WARN L202 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 21 [2021-02-22 01:33:04,625 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-22 01:33:04,625 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-22 01:33:04,625 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-22 01:33:04,626 INFO L185 CegarLoopUtils]: At program point fibonacciFINAL(lines 16 24) the Hoare annotation is: (let ((.cse0 (= fibonacci_~n |fibonacci_#in~n|))) (or (and .cse0 (<= |fibonacci_#in~n| (+ |fibonacci_#res| 1)) (< 1 fibonacci_~n)) (and (or (and (<= |fibonacci_#in~n| 1) (<= 1 |fibonacci_#res|) (<= |fibonacci_#res| 1)) (and (<= |fibonacci_#in~n| 0) (<= 0 |fibonacci_#res|) (<= |fibonacci_#res| 0))) .cse0))) [2021-02-22 01:33:04,626 INFO L192 CegarLoopUtils]: At program point fibonacciENTRY(lines 16 24) the Hoare annotation is: true [2021-02-22 01:33:04,626 INFO L185 CegarLoopUtils]: At program point L22(line 22) the Hoare annotation is: (and (= fibonacci_~n |fibonacci_#in~n|) (< 1 fibonacci_~n)) [2021-02-22 01:33:04,627 INFO L185 CegarLoopUtils]: At program point L22-1(line 22) the Hoare annotation is: (and (let ((.cse0 (= fibonacci_~n |fibonacci_#in~n|))) (or (and (<= fibonacci_~n (+ |fibonacci_#t~ret7| 2)) (<= 3 fibonacci_~n) .cse0) (and (<= fibonacci_~n (+ |fibonacci_#t~ret7| 1)) .cse0))) (< 1 fibonacci_~n)) [2021-02-22 01:33:04,627 INFO L185 CegarLoopUtils]: At program point L20(line 20) the Hoare annotation is: (and (<= |fibonacci_#in~n| 1) (= fibonacci_~n |fibonacci_#in~n|) (< 0 fibonacci_~n)) [2021-02-22 01:33:04,627 INFO L185 CegarLoopUtils]: At program point L22-2(line 22) the Hoare annotation is: (and (let ((.cse0 (= fibonacci_~n |fibonacci_#in~n|))) (or (and (<= fibonacci_~n (+ |fibonacci_#t~ret7| 2)) (<= 3 fibonacci_~n) .cse0) (and (<= fibonacci_~n (+ |fibonacci_#t~ret7| 1)) .cse0))) (< 1 fibonacci_~n)) [2021-02-22 01:33:04,628 INFO L185 CegarLoopUtils]: At program point L19(lines 19 23) the Hoare annotation is: (and (= fibonacci_~n |fibonacci_#in~n|) (< 0 fibonacci_~n)) [2021-02-22 01:33:04,628 INFO L185 CegarLoopUtils]: At program point L22-3(line 22) the Hoare annotation is: (let ((.cse0 (= fibonacci_~n |fibonacci_#in~n|)) (.cse1 (<= |fibonacci_#in~n| (+ |fibonacci_#t~ret7| |fibonacci_#t~ret8| 1)))) (or (and (<= fibonacci_~n (+ |fibonacci_#t~ret7| 1)) .cse0 .cse1 (< 1 fibonacci_~n)) (and (<= fibonacci_~n (+ |fibonacci_#t~ret7| 2)) (<= 3 fibonacci_~n) .cse0 .cse1))) [2021-02-22 01:33:04,628 INFO L185 CegarLoopUtils]: At program point L18(line 18) the Hoare annotation is: (and (= fibonacci_~n |fibonacci_#in~n|) (<= |fibonacci_#in~n| 0)) [2021-02-22 01:33:04,629 INFO L185 CegarLoopUtils]: At program point L22-4(line 22) the Hoare annotation is: (let ((.cse0 (= fibonacci_~n |fibonacci_#in~n|)) (.cse1 (<= |fibonacci_#in~n| (+ |fibonacci_#t~ret7| |fibonacci_#t~ret8| 1)))) (or (and (<= fibonacci_~n (+ |fibonacci_#t~ret7| 1)) .cse0 .cse1 (< 1 fibonacci_~n)) (and (<= fibonacci_~n (+ |fibonacci_#t~ret7| 2)) (<= 3 fibonacci_~n) .cse0 .cse1))) [2021-02-22 01:33:04,629 INFO L185 CegarLoopUtils]: At program point fibonacciEXIT(lines 16 24) the Hoare annotation is: (let ((.cse0 (= fibonacci_~n |fibonacci_#in~n|))) (or (and .cse0 (<= |fibonacci_#in~n| (+ |fibonacci_#res| 1)) (< 1 fibonacci_~n)) (and (or (and (<= |fibonacci_#in~n| 1) (<= 1 |fibonacci_#res|) (<= |fibonacci_#res| 1)) (and (<= |fibonacci_#in~n| 0) (<= 0 |fibonacci_#res|) (<= |fibonacci_#res| 0))) .cse0))) [2021-02-22 01:33:04,629 INFO L185 CegarLoopUtils]: At program point L17(lines 17 23) the Hoare annotation is: (= fibonacci_~n |fibonacci_#in~n|) [2021-02-22 01:33:04,629 INFO L185 CegarLoopUtils]: At program point L22-5(line 22) the Hoare annotation is: (let ((.cse0 (= fibonacci_~n |fibonacci_#in~n|)) (.cse1 (<= |fibonacci_#in~n| (+ |fibonacci_#res| 1))) (.cse2 (<= |fibonacci_#in~n| (+ |fibonacci_#t~ret7| |fibonacci_#t~ret8| 1)))) (or (and (<= fibonacci_~n (+ |fibonacci_#t~ret7| 1)) .cse0 .cse1 .cse2 (< 1 fibonacci_~n)) (and (<= fibonacci_~n (+ |fibonacci_#t~ret7| 2)) (<= 3 fibonacci_~n) .cse0 .cse1 .cse2))) [2021-02-22 01:33:04,629 INFO L185 CegarLoopUtils]: At program point L22-6(line 22) the Hoare annotation is: (let ((.cse0 (= fibonacci_~n |fibonacci_#in~n|)) (.cse1 (<= |fibonacci_#in~n| (+ |fibonacci_#res| 1)))) (or (and (<= fibonacci_~n (+ |fibonacci_#t~ret7| 1)) .cse0 .cse1 (< 1 fibonacci_~n)) (and (<= fibonacci_~n (+ |fibonacci_#t~ret7| 2)) (<= 3 fibonacci_~n) .cse0 .cse1))) [2021-02-22 01:33:04,630 INFO L192 CegarLoopUtils]: At program point L3-2(line 3) the Hoare annotation is: true [2021-02-22 01:33:04,630 INFO L192 CegarLoopUtils]: At program point L3-3(line 3) the Hoare annotation is: true [2021-02-22 01:33:04,630 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-22 01:33:04,630 INFO L192 CegarLoopUtils]: At program point L3-4(line 3) the Hoare annotation is: true [2021-02-22 01:33:04,630 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-22 01:33:04,630 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2021-02-22 01:33:04,630 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|)) [2021-02-22 01:33:04,630 INFO L192 CegarLoopUtils]: At program point L3(line 3) the Hoare annotation is: true [2021-02-22 01:33:04,630 INFO L192 CegarLoopUtils]: At program point L3-1(line 3) the Hoare annotation is: true [2021-02-22 01:33:04,631 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-22 01:33:04,631 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-22 01:33:04,631 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-22 01:33:04,631 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-22 01:33:04,631 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-22 01:33:04,631 INFO L185 CegarLoopUtils]: At program point L33(lines 33 37) the Hoare annotation is: (<= main_~x~0 (+ main_~result~0 1)) [2021-02-22 01:33:04,631 INFO L192 CegarLoopUtils]: At program point L32(line 32) the Hoare annotation is: true [2021-02-22 01:33:04,631 INFO L185 CegarLoopUtils]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 36) the Hoare annotation is: false [2021-02-22 01:33:04,631 INFO L185 CegarLoopUtils]: At program point L32-1(line 32) the Hoare annotation is: (<= main_~x~0 (+ |main_#t~ret10| 1)) [2021-02-22 01:33:04,631 INFO L192 CegarLoopUtils]: At program point L30(line 30) the Hoare annotation is: true [2021-02-22 01:33:04,631 INFO L185 CegarLoopUtils]: At program point L32-2(line 32) the Hoare annotation is: (<= main_~x~0 (+ |main_#t~ret10| 1)) [2021-02-22 01:33:04,632 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 27 38) the Hoare annotation is: true [2021-02-22 01:33:04,632 INFO L192 CegarLoopUtils]: At program point L29(lines 29 31) the Hoare annotation is: true [2021-02-22 01:33:04,632 INFO L185 CegarLoopUtils]: At program point L32-3(line 32) the Hoare annotation is: (and (<= main_~x~0 (+ main_~result~0 1)) (<= main_~x~0 (+ |main_#t~ret10| 1))) [2021-02-22 01:33:04,632 INFO L192 CegarLoopUtils]: At program point L28(line 28) the Hoare annotation is: true [2021-02-22 01:33:04,632 INFO L192 CegarLoopUtils]: At program point L28-1(line 28) the Hoare annotation is: true [2021-02-22 01:33:04,632 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 27 38) the Hoare annotation is: true [2021-02-22 01:33:04,632 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 27 38) the Hoare annotation is: true [2021-02-22 01:33:04,632 INFO L185 CegarLoopUtils]: At program point L36(line 36) the Hoare annotation is: false [2021-02-22 01:33:04,632 INFO L185 CegarLoopUtils]: At program point L36-1(line 36) the Hoare annotation is: false [2021-02-22 01:33:04,632 INFO L192 CegarLoopUtils]: At program point L34(line 34) the Hoare annotation is: true [2021-02-22 01:33:04,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 01:33:04 BoogieIcfgContainer [2021-02-22 01:33:04,648 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 01:33:04,649 INFO L168 Benchmark]: Toolchain (without parser) took 13782.72 ms. Allocated memory was 159.4 MB in the beginning and 332.4 MB in the end (delta: 173.0 MB). Free memory was 121.3 MB in the beginning and 301.5 MB in the end (delta: -180.2 MB). Peak memory consumption was 184.2 MB. Max. memory is 8.0 GB. [2021-02-22 01:33:04,649 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 159.4 MB. Free memory is still 137.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 01:33:04,650 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.57 ms. Allocated memory is still 159.4 MB. Free memory was 120.1 MB in the beginning and 110.9 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2021-02-22 01:33:04,650 INFO L168 Benchmark]: Boogie Preprocessor took 33.49 ms. Allocated memory is still 159.4 MB. Free memory was 110.9 MB in the beginning and 109.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-22 01:33:04,650 INFO L168 Benchmark]: RCFGBuilder took 594.80 ms. Allocated memory is still 159.4 MB. Free memory was 109.4 MB in the beginning and 133.5 MB in the end (delta: -24.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 8.0 GB. [2021-02-22 01:33:04,651 INFO L168 Benchmark]: TraceAbstraction took 12849.16 ms. Allocated memory was 159.4 MB in the beginning and 332.4 MB in the end (delta: 173.0 MB). Free memory was 132.9 MB in the beginning and 301.5 MB in the end (delta: -168.6 MB). Peak memory consumption was 195.2 MB. Max. memory is 8.0 GB. [2021-02-22 01:33:04,652 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 159.4 MB. Free memory is still 137.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 280.57 ms. Allocated memory is still 159.4 MB. Free memory was 120.1 MB in the beginning and 110.9 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 33.49 ms. Allocated memory is still 159.4 MB. Free memory was 110.9 MB in the beginning and 109.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 594.80 ms. Allocated memory is still 159.4 MB. Free memory was 109.4 MB in the beginning and 133.5 MB in the end (delta: -24.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 12849.16 ms. Allocated memory was 159.4 MB in the beginning and 332.4 MB in the end (delta: 173.0 MB). Free memory was 132.9 MB in the beginning and 301.5 MB in the end (delta: -168.6 MB). Peak memory consumption was 195.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 36]: 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: 16]: Procedure Contract for fibonacci Derived contract for procedure fibonacci: ((n == \old(n) && \old(n) <= \result + 1) && 1 < n) || ((((\old(n) <= 1 && 1 <= \result) && \result <= 1) || ((\old(n) <= 0 && 0 <= \result) && \result <= 0)) && n == \old(n)) - ProcedureContractResult [Line: 27]: Procedure Contract for main Derived contract for procedure main: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.2s, OverallIterations: 10, TraceHistogramMax: 13, AutomataDifference: 6.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 345 SDtfs, 720 SDslu, 747 SDs, 0 SdLazy, 1760 SolverSat, 303 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 334 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 591 ImplicationChecksByTransitivity, 4.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=9, 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, 10 MinimizatonAttempts, 31 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 44 LocationsWithAnnotation, 380 PreInvPairs, 651 NumberOfFragments, 401 HoareAnnotationTreeSize, 380 FomulaSimplifications, 43897 FormulaSimplificationTreeSizeReduction, 1.4s HoareSimplificationTime, 44 FomulaSimplificationsInter, 9078 FormulaSimplificationTreeSizeReductionInter, 2.0s 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...