/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/recursive/Fibonacci01-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 17:39:04,919 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 17:39:04,921 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 17:39:04,956 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 17:39:04,970 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 17:39:04,972 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 17:39:04,973 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 17:39:04,974 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 17:39:04,986 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 17:39:04,988 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 17:39:04,999 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 17:39:05,002 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 17:39:05,006 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 17:39:05,017 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 17:39:05,019 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 17:39:05,020 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 17:39:05,023 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 17:39:05,044 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 17:39:05,045 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 17:39:05,046 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 17:39:05,048 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 17:39:05,071 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 17:39:05,071 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 17:39:05,074 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 17:39:05,075 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 17:39:05,075 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 17:39:05,075 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 17:39:05,076 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 17:39:05,076 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 17:39:05,077 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 17:39:05,077 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 17:39:05,078 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 17:39:05,079 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 17:39:05,079 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 17:39:05,079 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 17:39:05,080 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 17:39:05,080 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 17:39:05,080 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 17:39:05,080 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 17:39:05,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 17:39:05,081 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 17:39:05,081 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 17:39:05,081 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 17:39:05,081 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 17:39:05,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 17:39:05,542 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 17:39:05,545 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 17:39:05,547 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 17:39:05,548 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 17:39:05,549 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Fibonacci01-1.c [2021-02-23 17:39:05,637 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d34a5db39/3d1998540d53419abfec2a570d851203/FLAG407cdbb13 [2021-02-23 17:39:06,330 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 17:39:06,331 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/Fibonacci01-1.c [2021-02-23 17:39:06,338 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d34a5db39/3d1998540d53419abfec2a570d851203/FLAG407cdbb13 [2021-02-23 17:39:06,689 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d34a5db39/3d1998540d53419abfec2a570d851203 [2021-02-23 17:39:06,692 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 17:39:06,706 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 17:39:06,710 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 17:39:06,710 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 17:39:06,714 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 17:39:06,715 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:39:06" (1/1) ... [2021-02-23 17:39:06,717 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@493e82c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:39:06, skipping insertion in model container [2021-02-23 17:39:06,717 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:39:06" (1/1) ... [2021-02-23 17:39:06,725 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 17:39:06,743 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 17:39:06,912 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] [2021-02-23 17:39:06,916 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:39:06,927 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 17:39:06,945 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] [2021-02-23 17:39:06,946 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:39:06,964 INFO L208 MainTranslator]: Completed translation [2021-02-23 17:39:06,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:39:06 WrapperNode [2021-02-23 17:39:06,965 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 17:39:06,966 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 17:39:06,967 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 17:39:06,967 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 17:39:06,983 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:39:06" (1/1) ... [2021-02-23 17:39:06,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:39:06" (1/1) ... [2021-02-23 17:39:06,992 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:39:06" (1/1) ... [2021-02-23 17:39:06,992 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:39:06" (1/1) ... [2021-02-23 17:39:06,998 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:39:06" (1/1) ... [2021-02-23 17:39:07,000 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:39:06" (1/1) ... [2021-02-23 17:39:07,002 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:39:06" (1/1) ... [2021-02-23 17:39:07,004 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 17:39:07,005 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 17:39:07,006 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 17:39:07,006 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 17:39:07,007 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:39:06" (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 [2021-02-23 17:39:07,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 17:39:07,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 17:39:07,194 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 17:39:07,194 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2021-02-23 17:39:07,194 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 17:39:07,194 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 17:39:07,195 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 17:39:07,195 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 17:39:07,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 17:39:07,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 17:39:07,195 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2021-02-23 17:39:07,196 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 17:39:07,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 17:39:07,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 17:39:07,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 17:39:07,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 17:39:07,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 17:39:07,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 17:39:07,614 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 17:39:07,614 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-23 17:39:07,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:39:07 BoogieIcfgContainer [2021-02-23 17:39:07,619 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 17:39:07,623 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 17:39:07,623 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 17:39:07,628 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 17:39:07,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 05:39:06" (1/3) ... [2021-02-23 17:39:07,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d0a02ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:39:07, skipping insertion in model container [2021-02-23 17:39:07,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:39:06" (2/3) ... [2021-02-23 17:39:07,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d0a02ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:39:07, skipping insertion in model container [2021-02-23 17:39:07,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:39:07" (3/3) ... [2021-02-23 17:39:07,633 INFO L111 eAbstractionObserver]: Analyzing ICFG Fibonacci01-1.c [2021-02-23 17:39:07,642 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 17:39:07,648 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 17:39:07,670 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 17:39:07,706 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 17:39:07,706 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 17:39:07,706 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 17:39:07,706 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 17:39:07,707 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 17:39:07,707 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 17:39:07,707 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 17:39:07,707 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 17:39:07,723 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2021-02-23 17:39:07,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-02-23 17:39:07,734 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:39:07,735 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] [2021-02-23 17:39:07,735 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:39:07,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:39:07,742 INFO L82 PathProgramCache]: Analyzing trace with hash 754086871, now seen corresponding path program 1 times [2021-02-23 17:39:07,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:39:07,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945953149] [2021-02-23 17:39:07,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:39:07,846 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:39:07,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:08,114 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:08,116 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:08,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:08,127 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:39:08,154 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:08,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:39:08,176 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:08,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:08,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:39:08,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:08,264 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:08,265 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:08,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-23 17:39:08,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:08,287 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:08,289 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:39:08,307 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:08,308 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:39:08,330 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:08,332 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 17:39:08,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:39:08,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945953149] [2021-02-23 17:39:08,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:39:08,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-23 17:39:08,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271911223] [2021-02-23 17:39:08,380 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-23 17:39:08,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:39:08,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-23 17:39:08,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-02-23 17:39:08,398 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 8 states. [2021-02-23 17:39:09,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:39:09,321 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2021-02-23 17:39:09,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-23 17:39:09,323 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2021-02-23 17:39:09,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:39:09,334 INFO L225 Difference]: With dead ends: 59 [2021-02-23 17:39:09,334 INFO L226 Difference]: Without dead ends: 39 [2021-02-23 17:39:09,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-02-23 17:39:09,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-02-23 17:39:09,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-02-23 17:39:09,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-02-23 17:39:09,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2021-02-23 17:39:09,392 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 27 [2021-02-23 17:39:09,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:39:09,393 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2021-02-23 17:39:09,393 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-23 17:39:09,393 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2021-02-23 17:39:09,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-23 17:39:09,396 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:39:09,396 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] [2021-02-23 17:39:09,396 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 17:39:09,397 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:39:09,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:39:09,397 INFO L82 PathProgramCache]: Analyzing trace with hash -213937358, now seen corresponding path program 1 times [2021-02-23 17:39:09,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:39:09,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861612585] [2021-02-23 17:39:09,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:39:09,402 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:39:09,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:09,446 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:09,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:09,451 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:09,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:39:09,467 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-23 17:39:09,468 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-23 17:39:09,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:09,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:09,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:39:09,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:09,541 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:09,542 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:09,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-23 17:39:09,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:09,558 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:09,559 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:39:09,572 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:09,573 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:39:09,588 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:09,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 17:39:09,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:39:09,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861612585] [2021-02-23 17:39:09,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:39:09,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-23 17:39:09,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214791811] [2021-02-23 17:39:09,640 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-23 17:39:09,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:39:09,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-23 17:39:09,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-02-23 17:39:09,642 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 8 states. [2021-02-23 17:39:10,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:39:10,221 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2021-02-23 17:39:10,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-23 17:39:10,223 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2021-02-23 17:39:10,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:39:10,225 INFO L225 Difference]: With dead ends: 47 [2021-02-23 17:39:10,225 INFO L226 Difference]: Without dead ends: 41 [2021-02-23 17:39:10,227 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 [2021-02-23 17:39:10,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-02-23 17:39:10,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2021-02-23 17:39:10,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-02-23 17:39:10,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2021-02-23 17:39:10,243 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 28 [2021-02-23 17:39:10,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:39:10,243 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2021-02-23 17:39:10,243 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-23 17:39:10,243 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2021-02-23 17:39:10,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-02-23 17:39:10,245 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:39:10,246 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] [2021-02-23 17:39:10,246 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 17:39:10,246 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:39:10,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:39:10,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1480948785, now seen corresponding path program 1 times [2021-02-23 17:39:10,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:39:10,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1068439929] [2021-02-23 17:39:10,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:39:10,250 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:39:10,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:10,308 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:10,309 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:10,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:10,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:10,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:39:10,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:10,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:10,377 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:10,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-23 17:39:10,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:10,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:10,400 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:10,403 WARN L141 QuantifierPusher]: treesize reduction 6, result has 33.3 percent of original size [2021-02-23 17:39:10,404 WARN L147 QuantifierPusher]: treesize reduction 6, result has 33.3 percent of original size 3 [2021-02-23 17:39:10,409 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:10,410 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 17:39:10,416 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:10,417 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:10,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:10,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:10,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:39:10,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:10,427 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:10,428 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:39:10,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:10,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:39:10,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-02-23 17:39:10,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:10,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:10,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:10,454 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-02-23 17:39:10,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1068439929] [2021-02-23 17:39:10,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:39:10,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 17:39:10,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266743457] [2021-02-23 17:39:10,456 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 17:39:10,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:39:10,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 17:39:10,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-02-23 17:39:10,458 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 7 states. [2021-02-23 17:39:10,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:39:10,774 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2021-02-23 17:39:10,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 17:39:10,774 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 44 [2021-02-23 17:39:10,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:39:10,776 INFO L225 Difference]: With dead ends: 63 [2021-02-23 17:39:10,777 INFO L226 Difference]: Without dead ends: 41 [2021-02-23 17:39:10,778 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 [2021-02-23 17:39:10,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-02-23 17:39:10,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-02-23 17:39:10,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2021-02-23 17:39:10,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2021-02-23 17:39:10,792 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 44 [2021-02-23 17:39:10,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:39:10,793 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2021-02-23 17:39:10,793 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 17:39:10,793 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2021-02-23 17:39:10,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-02-23 17:39:10,795 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:39:10,795 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] [2021-02-23 17:39:10,796 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 17:39:10,796 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:39:10,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:39:10,797 INFO L82 PathProgramCache]: Analyzing trace with hash -189469004, now seen corresponding path program 1 times [2021-02-23 17:39:10,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:39:10,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [564375219] [2021-02-23 17:39:10,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:39:10,800 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:39:10,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:10,838 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:10,838 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:10,839 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:10,840 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 17:39:10,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:10,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 17:39:10,849 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:10,850 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:10,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:39:10,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:10,886 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:10,886 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:10,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-23 17:39:10,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:10,910 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:10,915 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:39:10,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:10,924 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:39:10,936 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:10,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-23 17:39:10,946 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:10,947 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 17:39:10,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:39:10,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:10,968 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:10,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:39:10,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:10,970 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:39:10,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:10,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:39:10,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:39:10,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:11,000 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:11,001 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:11,002 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:11,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:39:11,018 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-02-23 17:39:11,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [564375219] [2021-02-23 17:39:11,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:39:11,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-23 17:39:11,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719145062] [2021-02-23 17:39:11,020 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-23 17:39:11,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:39:11,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-23 17:39:11,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-02-23 17:39:11,021 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 12 states. [2021-02-23 17:39:11,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:39:11,777 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2021-02-23 17:39:11,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 17:39:11,778 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2021-02-23 17:39:11,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:39:11,780 INFO L225 Difference]: With dead ends: 59 [2021-02-23 17:39:11,781 INFO L226 Difference]: Without dead ends: 53 [2021-02-23 17:39:11,782 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 [2021-02-23 17:39:11,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-02-23 17:39:11,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2021-02-23 17:39:11,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2021-02-23 17:39:11,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2021-02-23 17:39:11,799 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 45 [2021-02-23 17:39:11,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:39:11,799 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2021-02-23 17:39:11,800 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-23 17:39:11,800 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2021-02-23 17:39:11,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-02-23 17:39:11,802 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:39:11,803 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] [2021-02-23 17:39:11,803 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 17:39:11,803 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:39:11,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:39:11,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1181749608, now seen corresponding path program 1 times [2021-02-23 17:39:11,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:39:11,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1222345385] [2021-02-23 17:39:11,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:39:11,809 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:39:11,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:11,846 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:11,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:11,847 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:11,847 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:11,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:39:11,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:11,875 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:11,876 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:11,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-23 17:39:11,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:11,894 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:11,895 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:11,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:11,896 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:39:11,901 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:11,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:11,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:39:11,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:11,909 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:11,910 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:39:11,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:11,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:39:11,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:39:11,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:11,938 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:11,939 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:39:11,939 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:11,940 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:39:11,950 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:11,964 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:39:11,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:39:11,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:11,978 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:11,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:11,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:39:11,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:11,985 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:11,986 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:11,994 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-02-23 17:39:11,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1222345385] [2021-02-23 17:39:11,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:39:11,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-23 17:39:11,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856416003] [2021-02-23 17:39:11,996 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-23 17:39:11,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:39:11,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-23 17:39:11,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-02-23 17:39:11,997 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand 8 states. [2021-02-23 17:39:12,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:39:12,419 INFO L93 Difference]: Finished difference Result 84 states and 108 transitions. [2021-02-23 17:39:12,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-23 17:39:12,420 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 64 [2021-02-23 17:39:12,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:39:12,426 INFO L225 Difference]: With dead ends: 84 [2021-02-23 17:39:12,426 INFO L226 Difference]: Without dead ends: 51 [2021-02-23 17:39:12,431 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 [2021-02-23 17:39:12,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-02-23 17:39:12,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-02-23 17:39:12,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-02-23 17:39:12,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2021-02-23 17:39:12,461 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 64 [2021-02-23 17:39:12,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:39:12,461 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2021-02-23 17:39:12,462 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-23 17:39:12,462 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2021-02-23 17:39:12,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-02-23 17:39:12,471 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:39:12,472 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] [2021-02-23 17:39:12,472 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 17:39:12,472 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:39:12,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:39:12,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1062763502, now seen corresponding path program 2 times [2021-02-23 17:39:12,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:39:12,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [779499087] [2021-02-23 17:39:12,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:39:12,483 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:39:12,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:12,552 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:12,555 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:12,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:12,560 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:12,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:39:12,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:12,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:12,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:12,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-23 17:39:12,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:12,601 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:12,602 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:12,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:12,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:39:12,608 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:12,609 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:12,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:39:12,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:12,622 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:12,623 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:39:12,629 WARN L141 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-02-23 17:39:12,630 WARN L147 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size 7 [2021-02-23 17:39:12,639 WARN L141 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-02-23 17:39:12,640 WARN L147 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size 7 [2021-02-23 17:39:12,650 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:12,651 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:39:12,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:39:12,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:12,663 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:12,664 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:12,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:39:12,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:12,669 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:12,670 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:12,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-23 17:39:12,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:12,677 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:12,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:39:12,678 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:12,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:39:12,718 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-02-23 17:39:12,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [779499087] [2021-02-23 17:39:12,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:39:12,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 17:39:12,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865457874] [2021-02-23 17:39:12,719 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 17:39:12,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:39:12,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 17:39:12,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-02-23 17:39:12,720 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand 9 states. [2021-02-23 17:39:13,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:39:13,062 INFO L93 Difference]: Finished difference Result 85 states and 99 transitions. [2021-02-23 17:39:13,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-23 17:39:13,063 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2021-02-23 17:39:13,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:39:13,067 INFO L225 Difference]: With dead ends: 85 [2021-02-23 17:39:13,068 INFO L226 Difference]: Without dead ends: 51 [2021-02-23 17:39:13,071 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 [2021-02-23 17:39:13,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-02-23 17:39:13,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-02-23 17:39:13,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-02-23 17:39:13,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2021-02-23 17:39:13,096 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 62 [2021-02-23 17:39:13,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:39:13,097 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2021-02-23 17:39:13,097 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 17:39:13,097 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2021-02-23 17:39:13,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-02-23 17:39:13,101 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:39:13,101 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] [2021-02-23 17:39:13,101 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 17:39:13,101 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:39:13,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:39:13,102 INFO L82 PathProgramCache]: Analyzing trace with hash -745129785, now seen corresponding path program 3 times [2021-02-23 17:39:13,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:39:13,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905005716] [2021-02-23 17:39:13,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:39:13,108 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:39:13,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:13,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:13,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:13,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:13,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 17:39:13,184 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:13,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 17:39:13,191 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:13,192 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:13,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:39:13,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:13,226 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:13,227 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:13,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-23 17:39:13,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:13,259 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:13,260 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:39:13,270 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:13,272 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:39:13,283 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:13,284 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-23 17:39:13,293 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:13,293 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 17:39:13,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:39:13,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:13,341 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:13,342 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:39:13,344 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:13,345 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:39:13,367 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:13,368 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-23 17:39:13,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:13,375 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 17:39:13,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:39:13,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:13,382 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:13,382 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:39:13,383 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:13,383 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:39:13,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:13,395 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:39:13,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:39:13,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:13,412 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:13,413 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:13,413 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:13,414 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:39:13,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-23 17:39:13,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:13,433 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:13,434 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:13,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:13,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:39:13,477 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-02-23 17:39:13,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905005716] [2021-02-23 17:39:13,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:39:13,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-23 17:39:13,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372022767] [2021-02-23 17:39:13,487 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 17:39:13,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:39:13,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 17:39:13,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-02-23 17:39:13,491 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand 14 states. [2021-02-23 17:39:14,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:39:14,475 INFO L93 Difference]: Finished difference Result 69 states and 79 transitions. [2021-02-23 17:39:14,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-23 17:39:14,476 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 63 [2021-02-23 17:39:14,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:39:14,478 INFO L225 Difference]: With dead ends: 69 [2021-02-23 17:39:14,478 INFO L226 Difference]: Without dead ends: 63 [2021-02-23 17:39:14,479 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 [2021-02-23 17:39:14,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-02-23 17:39:14,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 53. [2021-02-23 17:39:14,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-02-23 17:39:14,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2021-02-23 17:39:14,494 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 63 [2021-02-23 17:39:14,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:39:14,495 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2021-02-23 17:39:14,495 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 17:39:14,495 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2021-02-23 17:39:14,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-02-23 17:39:14,496 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:39:14,497 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] [2021-02-23 17:39:14,497 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 17:39:14,497 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:39:14,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:39:14,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1589190530, now seen corresponding path program 4 times [2021-02-23 17:39:14,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:39:14,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506921748] [2021-02-23 17:39:14,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:39:14,500 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:39:14,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:14,531 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:14,532 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:14,532 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:14,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:14,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:39:14,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:14,558 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:14,559 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:14,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-23 17:39:14,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:14,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:14,579 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:14,580 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:14,580 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:39:14,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:14,585 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:14,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:39:14,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:14,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:14,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:39:14,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:14,604 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:39:14,613 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:14,613 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:39:14,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:39:14,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:14,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:14,630 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:39:14,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:14,633 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:39:14,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:39:14,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:14,644 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:14,645 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:14,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-23 17:39:14,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:14,660 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:14,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:39:14,661 WARN L141 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-02-23 17:39:14,662 WARN L147 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size 7 [2021-02-23 17:39:14,673 WARN L141 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-02-23 17:39:14,674 WARN L147 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size 7 [2021-02-23 17:39:14,685 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:14,686 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:39:14,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:39:14,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:14,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:14,702 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:14,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:39:14,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:14,705 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:14,705 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:14,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:39:14,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:14,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:14,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:14,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-23 17:39:14,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:14,713 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:14,714 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:14,733 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 17 proven. 42 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-02-23 17:39:14,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1506921748] [2021-02-23 17:39:14,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:39:14,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-23 17:39:14,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124305223] [2021-02-23 17:39:14,734 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-23 17:39:14,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:39:14,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-23 17:39:14,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-02-23 17:39:14,735 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand 11 states. [2021-02-23 17:39:15,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:39:15,264 INFO L93 Difference]: Finished difference Result 106 states and 135 transitions. [2021-02-23 17:39:15,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-23 17:39:15,265 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 98 [2021-02-23 17:39:15,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:39:15,266 INFO L225 Difference]: With dead ends: 106 [2021-02-23 17:39:15,267 INFO L226 Difference]: Without dead ends: 70 [2021-02-23 17:39:15,268 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 [2021-02-23 17:39:15,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-02-23 17:39:15,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 64. [2021-02-23 17:39:15,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-02-23 17:39:15,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 76 transitions. [2021-02-23 17:39:15,286 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 76 transitions. Word has length 98 [2021-02-23 17:39:15,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:39:15,286 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 76 transitions. [2021-02-23 17:39:15,286 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-23 17:39:15,287 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 76 transitions. [2021-02-23 17:39:15,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-02-23 17:39:15,288 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:39:15,288 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] [2021-02-23 17:39:15,289 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 17:39:15,289 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:39:15,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:39:15,289 INFO L82 PathProgramCache]: Analyzing trace with hash -2037596062, now seen corresponding path program 5 times [2021-02-23 17:39:15,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:39:15,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1725177121] [2021-02-23 17:39:15,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:39:15,292 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:39:15,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:15,332 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:15,333 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:15,334 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:15,334 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:15,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:39:15,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:15,360 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:15,361 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:15,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-23 17:39:15,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:15,389 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:15,390 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:15,390 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:15,391 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:39:15,395 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:15,396 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:15,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:39:15,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:15,410 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:15,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:39:15,417 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:15,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:39:15,426 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:15,427 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:39:15,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:39:15,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:15,445 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:15,446 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:39:15,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:15,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:39:15,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:15,458 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:39:15,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:39:15,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:15,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:15,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:39:15,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:15,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:39:15,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:39:15,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:15,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:15,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:15,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-23 17:39:15,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:15,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:15,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:15,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-23 17:39:15,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:15,513 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:15,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:39:15,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:15,515 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 17:39:15,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:15,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:39:15,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:39:15,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:15,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:15,553 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:39:15,557 WARN L141 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-02-23 17:39:15,558 WARN L147 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size 7 [2021-02-23 17:39:15,573 WARN L141 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-02-23 17:39:15,574 WARN L147 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size 7 [2021-02-23 17:39:15,589 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:15,589 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:39:15,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:39:15,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:15,608 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:15,610 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:15,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:39:15,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:15,615 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:15,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:15,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:39:15,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:15,619 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:15,620 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:15,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-23 17:39:15,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:15,625 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:15,625 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:15,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-23 17:39:15,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:15,633 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:15,634 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:15,701 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 27 proven. 70 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-02-23 17:39:15,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1725177121] [2021-02-23 17:39:15,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:39:15,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-23 17:39:15,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145509648] [2021-02-23 17:39:15,702 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-23 17:39:15,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:39:15,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-23 17:39:15,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-02-23 17:39:15,703 INFO L87 Difference]: Start difference. First operand 64 states and 76 transitions. Second operand 15 states. [2021-02-23 17:39:16,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:39:16,596 INFO L93 Difference]: Finished difference Result 132 states and 174 transitions. [2021-02-23 17:39:16,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-23 17:39:16,597 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 134 [2021-02-23 17:39:16,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:39:16,601 INFO L225 Difference]: With dead ends: 132 [2021-02-23 17:39:16,601 INFO L226 Difference]: Without dead ends: 85 [2021-02-23 17:39:16,603 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2021-02-23 17:39:16,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-02-23 17:39:16,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 76. [2021-02-23 17:39:16,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2021-02-23 17:39:16,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 93 transitions. [2021-02-23 17:39:16,639 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 93 transitions. Word has length 134 [2021-02-23 17:39:16,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:39:16,640 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 93 transitions. [2021-02-23 17:39:16,641 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-23 17:39:16,641 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 93 transitions. [2021-02-23 17:39:16,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-02-23 17:39:16,642 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:39:16,642 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] [2021-02-23 17:39:16,642 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-23 17:39:16,643 INFO L428 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:39:16,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:39:16,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1069346308, now seen corresponding path program 6 times [2021-02-23 17:39:16,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:39:16,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1364027284] [2021-02-23 17:39:16,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:39:16,648 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:39:16,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:16,692 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:16,693 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:16,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:16,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 17:39:16,698 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:16,698 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 17:39:16,702 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:16,703 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:16,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:39:16,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:16,738 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:16,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:16,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-23 17:39:16,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:16,760 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:16,760 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:39:16,767 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:16,768 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:39:16,778 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:16,779 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-23 17:39:16,788 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:16,788 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 17:39:16,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:39:16,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:16,814 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:16,815 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:39:16,815 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:16,816 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:39:16,817 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:16,817 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-23 17:39:16,818 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:16,818 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 17:39:16,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:39:16,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:16,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:16,830 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:39:16,831 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:16,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 17:39:16,845 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:16,845 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-23 17:39:16,846 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:16,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 17:39:16,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:39:16,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:16,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:16,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:39:16,853 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:16,854 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:39:16,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:16,864 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:39:16,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:39:16,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:16,880 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:16,881 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:16,881 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:16,882 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:39:16,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-23 17:39:16,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:16,901 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:16,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:16,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:16,902 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:39:16,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-23 17:39:16,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:16,926 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:16,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:16,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:16,927 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:39:16,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:16,941 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 17:39:16,958 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:16,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:39:16,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 17:39:16,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:16,962 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:16,963 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:16,963 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:16,964 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:39:16,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-23 17:39:16,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:39:16,968 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:16,969 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:39:16,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:39:16,970 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 17:39:16,993 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-02-23 17:39:16,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1364027284] [2021-02-23 17:39:16,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:39:16,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-23 17:39:16,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346528727] [2021-02-23 17:39:16,994 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-23 17:39:16,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:39:16,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-23 17:39:16,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-02-23 17:39:16,995 INFO L87 Difference]: Start difference. First operand 76 states and 93 transitions. Second operand 16 states. [2021-02-23 17:39:17,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:39:17,929 INFO L93 Difference]: Finished difference Result 76 states and 93 transitions. [2021-02-23 17:39:17,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-23 17:39:17,930 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 98 [2021-02-23 17:39:17,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:39:17,931 INFO L225 Difference]: With dead ends: 76 [2021-02-23 17:39:17,931 INFO L226 Difference]: Without dead ends: 0 [2021-02-23 17:39:17,932 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=192, Invalid=800, Unknown=0, NotChecked=0, Total=992 [2021-02-23 17:39:17,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-23 17:39:17,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-23 17:39:17,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-23 17:39:17,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-23 17:39:17,933 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 98 [2021-02-23 17:39:17,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:39:17,933 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-23 17:39:17,933 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-23 17:39:17,934 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-23 17:39:17,934 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-23 17:39:17,934 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-23 17:39:17,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-23 17:39:19,849 WARN L202 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 21 [2021-02-23 17:39:19,979 WARN L202 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 17 [2021-02-23 17:39:20,201 WARN L202 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 17 [2021-02-23 17:39:20,393 WARN L202 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 22 [2021-02-23 17:39:20,694 WARN L202 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 19 [2021-02-23 17:39:20,919 WARN L202 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 19 [2021-02-23 17:39:21,095 WARN L202 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 21 [2021-02-23 17:39:21,459 WARN L202 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 21 [2021-02-23 17:39:21,685 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-23 17:39:21,685 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-23 17:39:21,686 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-23 17:39:21,686 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))) [2021-02-23 17:39:21,686 INFO L192 CegarLoopUtils]: At program point fibonacciENTRY(lines 16 24) the Hoare annotation is: true [2021-02-23 17:39:21,686 INFO L185 CegarLoopUtils]: At program point L22(line 22) the Hoare annotation is: (and (= fibonacci_~n |fibonacci_#in~n|) (< 1 fibonacci_~n)) [2021-02-23 17:39:21,687 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)) [2021-02-23 17:39:21,687 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)) [2021-02-23 17:39:21,687 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)) [2021-02-23 17:39:21,687 INFO L185 CegarLoopUtils]: At program point L19(lines 19 23) the Hoare annotation is: (and (= fibonacci_~n |fibonacci_#in~n|) (< 0 fibonacci_~n)) [2021-02-23 17:39:21,687 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))) [2021-02-23 17:39:21,688 INFO L185 CegarLoopUtils]: At program point L18(line 18) the Hoare annotation is: (and (= fibonacci_~n |fibonacci_#in~n|) (<= |fibonacci_#in~n| 0)) [2021-02-23 17:39:21,688 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))) [2021-02-23 17:39:21,688 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))) [2021-02-23 17:39:21,688 INFO L185 CegarLoopUtils]: At program point L17(lines 17 23) the Hoare annotation is: (= fibonacci_~n |fibonacci_#in~n|) [2021-02-23 17:39:21,688 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))) [2021-02-23 17:39:21,688 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))) [2021-02-23 17:39:21,689 INFO L192 CegarLoopUtils]: At program point L3-2(line 3) the Hoare annotation is: true [2021-02-23 17:39:21,689 INFO L192 CegarLoopUtils]: At program point L3-3(line 3) the Hoare annotation is: true [2021-02-23 17:39:21,689 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 17:39:21,689 INFO L192 CegarLoopUtils]: At program point L3-4(line 3) the Hoare annotation is: true [2021-02-23 17:39:21,689 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-23 17:39:21,689 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2021-02-23 17:39:21,689 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|)) [2021-02-23 17:39:21,689 INFO L192 CegarLoopUtils]: At program point L3(line 3) the Hoare annotation is: true [2021-02-23 17:39:21,690 INFO L192 CegarLoopUtils]: At program point L3-1(line 3) the Hoare annotation is: true [2021-02-23 17:39:21,690 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-23 17:39:21,690 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-23 17:39:21,690 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 17:39:21,690 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-23 17:39:21,690 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-23 17:39:21,690 INFO L185 CegarLoopUtils]: At program point L33(lines 33 37) the Hoare annotation is: (<= main_~x~0 (+ main_~result~0 1)) [2021-02-23 17:39:21,690 INFO L192 CegarLoopUtils]: At program point L32(line 32) the Hoare annotation is: true [2021-02-23 17:39:21,690 INFO L185 CegarLoopUtils]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 36) the Hoare annotation is: false [2021-02-23 17:39:21,691 INFO L185 CegarLoopUtils]: At program point L32-1(line 32) the Hoare annotation is: (<= main_~x~0 (+ |main_#t~ret10| 1)) [2021-02-23 17:39:21,691 INFO L192 CegarLoopUtils]: At program point L30(line 30) the Hoare annotation is: true [2021-02-23 17:39:21,691 INFO L185 CegarLoopUtils]: At program point L32-2(line 32) the Hoare annotation is: (<= main_~x~0 (+ |main_#t~ret10| 1)) [2021-02-23 17:39:21,691 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 27 38) the Hoare annotation is: true [2021-02-23 17:39:21,691 INFO L192 CegarLoopUtils]: At program point L29(lines 29 31) the Hoare annotation is: true [2021-02-23 17:39:21,691 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))) [2021-02-23 17:39:21,691 INFO L192 CegarLoopUtils]: At program point L28(line 28) the Hoare annotation is: true [2021-02-23 17:39:21,692 INFO L192 CegarLoopUtils]: At program point L28-1(line 28) the Hoare annotation is: true [2021-02-23 17:39:21,692 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 27 38) the Hoare annotation is: true [2021-02-23 17:39:21,692 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 27 38) the Hoare annotation is: true [2021-02-23 17:39:21,692 INFO L185 CegarLoopUtils]: At program point L36(line 36) the Hoare annotation is: false [2021-02-23 17:39:21,692 INFO L185 CegarLoopUtils]: At program point L36-1(line 36) the Hoare annotation is: false [2021-02-23 17:39:21,692 INFO L192 CegarLoopUtils]: At program point L34(line 34) the Hoare annotation is: true [2021-02-23 17:39:21,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 05:39:21 BoogieIcfgContainer [2021-02-23 17:39:21,712 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 17:39:21,713 INFO L168 Benchmark]: Toolchain (without parser) took 15018.74 ms. Allocated memory was 154.1 MB in the beginning and 323.0 MB in the end (delta: 168.8 MB). Free memory was 110.5 MB in the beginning and 228.5 MB in the end (delta: -117.9 MB). Peak memory consumption was 171.9 MB. Max. memory is 8.0 GB. [2021-02-23 17:39:21,713 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 154.1 MB. Free memory is still 127.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 17:39:21,713 INFO L168 Benchmark]: CACSL2BoogieTranslator took 256.03 ms. Allocated memory is still 154.1 MB. Free memory was 109.5 MB in the beginning and 100.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 17:39:21,714 INFO L168 Benchmark]: Boogie Preprocessor took 38.01 ms. Allocated memory is still 154.1 MB. Free memory was 100.0 MB in the beginning and 99.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 17:39:21,714 INFO L168 Benchmark]: RCFGBuilder took 614.02 ms. Allocated memory is still 154.1 MB. Free memory was 99.0 MB in the beginning and 125.2 MB in the end (delta: -26.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2021-02-23 17:39:21,715 INFO L168 Benchmark]: TraceAbstraction took 14088.66 ms. Allocated memory was 154.1 MB in the beginning and 323.0 MB in the end (delta: 168.8 MB). Free memory was 124.9 MB in the beginning and 228.5 MB in the end (delta: -103.5 MB). Peak memory consumption was 185.7 MB. Max. memory is 8.0 GB. [2021-02-23 17:39:21,716 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 154.1 MB. Free memory is still 127.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 256.03 ms. Allocated memory is still 154.1 MB. Free memory was 109.5 MB in the beginning and 100.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 38.01 ms. Allocated memory is still 154.1 MB. Free memory was 100.0 MB in the beginning and 99.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 614.02 ms. Allocated memory is still 154.1 MB. Free memory was 99.0 MB in the beginning and 125.2 MB in the end (delta: -26.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 14088.66 ms. Allocated memory was 154.1 MB in the beginning and 323.0 MB in the end (delta: 168.8 MB). Free memory was 124.9 MB in the beginning and 228.5 MB in the end (delta: -103.5 MB). Peak memory consumption was 185.7 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: 10.2s, OverallIterations: 10, TraceHistogramMax: 13, AutomataDifference: 6.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 345 SDtfs, 720 SDslu, 747 SDs, 0 SdLazy, 1760 SolverSat, 303 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 334 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 591 ImplicationChecksByTransitivity, 4.8s 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: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 31 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 44 LocationsWithAnnotation, 380 PreInvPairs, 651 NumberOfFragments, 401 HoareAnnotationTreeSize, 380 FomulaSimplifications, 43897 FormulaSimplificationTreeSizeReduction, 1.6s 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...