/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_4-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 04:10:22,538 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 04:10:22,541 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 04:10:22,582 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 04:10:22,582 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 04:10:22,584 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 04:10:22,586 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 04:10:22,596 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 04:10:22,602 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 04:10:22,603 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 04:10:22,604 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 04:10:22,606 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 04:10:22,606 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 04:10:22,607 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 04:10:22,608 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 04:10:22,610 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 04:10:22,610 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 04:10:22,612 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 04:10:22,613 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 04:10:22,616 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 04:10:22,617 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 04:10:22,620 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 04:10:22,622 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 04:10:22,622 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 04:10:22,626 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-24 04:10:22,626 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-24 04:10:22,626 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-24 04:10:22,627 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-24 04:10:22,628 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-24 04:10:22,629 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-24 04:10:22,629 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-24 04:10:22,630 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-24 04:10:22,631 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-24 04:10:22,632 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-24 04:10:22,633 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-24 04:10:22,633 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-24 04:10:22,634 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-24 04:10:22,634 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-24 04:10:22,635 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 04:10:22,636 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 04:10:22,636 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 04:10:22,638 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 04:10:22,650 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 04:10:22,651 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 04:10:22,652 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 04:10:22,653 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 04:10:22,653 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 04:10:22,653 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 04:10:22,653 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 04:10:22,654 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 04:10:22,654 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 04:10:22,654 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 04:10:22,654 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 04:10:22,654 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 04:10:22,655 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 04:10:22,655 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 04:10:22,655 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 04:10:22,655 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 04:10:22,655 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 04:10:22,656 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 04:10:22,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:10:22,656 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 04:10:22,656 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 04:10:22,657 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 04:10:22,657 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 04:10:22,657 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 04:10:23,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 04:10:23,046 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 04:10:23,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 04:10:23,051 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 04:10:23,051 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 04:10:23,052 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_4-1.c [2021-02-24 04:10:23,145 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/518c43625/9b535be0b992406cabc45cd185957c75/FLAG25e6a80ba [2021-02-24 04:10:23,810 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 04:10:23,811 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_2calls_4-1.c [2021-02-24 04:10:23,818 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/518c43625/9b535be0b992406cabc45cd185957c75/FLAG25e6a80ba [2021-02-24 04:10:24,167 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/518c43625/9b535be0b992406cabc45cd185957c75 [2021-02-24 04:10:24,178 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 04:10:24,194 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 04:10:24,198 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 04:10:24,198 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 04:10:24,202 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 04:10:24,203 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:10:24" (1/1) ... [2021-02-24 04:10:24,205 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3345d6b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:10:24, skipping insertion in model container [2021-02-24 04:10:24,206 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:10:24" (1/1) ... [2021-02-24 04:10:24,214 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 04:10:24,232 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 04:10:24,431 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_2calls_4-1.c[946,959] [2021-02-24 04:10:24,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:10:24,446 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 04:10:24,466 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_2calls_4-1.c[946,959] [2021-02-24 04:10:24,467 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:10:24,485 INFO L208 MainTranslator]: Completed translation [2021-02-24 04:10:24,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:10:24 WrapperNode [2021-02-24 04:10:24,486 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 04:10:24,487 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 04:10:24,487 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 04:10:24,488 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 04:10:24,501 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:10:24" (1/1) ... [2021-02-24 04:10:24,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:10:24" (1/1) ... [2021-02-24 04:10:24,510 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:10:24" (1/1) ... [2021-02-24 04:10:24,511 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:10:24" (1/1) ... [2021-02-24 04:10:24,517 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:10:24" (1/1) ... [2021-02-24 04:10:24,519 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:10:24" (1/1) ... [2021-02-24 04:10:24,521 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:10:24" (1/1) ... [2021-02-24 04:10:24,523 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 04:10:24,525 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 04:10:24,525 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 04:10:24,525 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 04:10:24,526 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:10:24" (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 [2021-02-24 04:10:24,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 04:10:24,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 04:10:24,667 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 04:10:24,667 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2021-02-24 04:10:24,667 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2021-02-24 04:10:24,676 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 04:10:24,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 04:10:24,677 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 04:10:24,677 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 04:10:24,677 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 04:10:24,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 04:10:24,678 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2021-02-24 04:10:24,679 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2021-02-24 04:10:24,679 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 04:10:24,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 04:10:24,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 04:10:24,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 04:10:24,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 04:10:24,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 04:10:24,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 04:10:25,157 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 04:10:25,157 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-24 04:10:25,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:10:25 BoogieIcfgContainer [2021-02-24 04:10:25,163 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 04:10:25,169 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 04:10:25,169 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 04:10:25,177 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 04:10:25,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:10:24" (1/3) ... [2021-02-24 04:10:25,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e2fa72f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:10:25, skipping insertion in model container [2021-02-24 04:10:25,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:10:24" (2/3) ... [2021-02-24 04:10:25,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e2fa72f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:10:25, skipping insertion in model container [2021-02-24 04:10:25,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:10:25" (3/3) ... [2021-02-24 04:10:25,187 INFO L111 eAbstractionObserver]: Analyzing ICFG fibo_2calls_4-1.c [2021-02-24 04:10:25,209 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 04:10:25,225 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 04:10:25,278 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 04:10:25,321 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 04:10:25,321 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 04:10:25,321 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 04:10:25,322 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 04:10:25,322 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 04:10:25,322 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 04:10:25,322 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 04:10:25,322 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 04:10:25,354 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2021-02-24 04:10:25,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-24 04:10:25,376 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:10:25,378 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:10:25,378 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:10:25,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:10:25,390 INFO L82 PathProgramCache]: Analyzing trace with hash 2042570277, now seen corresponding path program 1 times [2021-02-24 04:10:25,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:10:25,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [597824431] [2021-02-24 04:10:25,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:10:25,519 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:10:25,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:25,797 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:25,800 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:25,802 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:25,804 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:25,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:25,834 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:25,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:10:25,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:25,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:25,922 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:25,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:10:25,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:25,945 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:25,946 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:25,955 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:25,956 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:25,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:10:25,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [597824431] [2021-02-24 04:10:25,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:10:25,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-24 04:10:25,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266385503] [2021-02-24 04:10:25,981 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-24 04:10:25,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:10:25,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-24 04:10:25,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-24 04:10:26,000 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 6 states. [2021-02-24 04:10:26,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:10:26,462 INFO L93 Difference]: Finished difference Result 67 states and 76 transitions. [2021-02-24 04:10:26,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 04:10:26,465 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2021-02-24 04:10:26,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:10:26,485 INFO L225 Difference]: With dead ends: 67 [2021-02-24 04:10:26,486 INFO L226 Difference]: Without dead ends: 50 [2021-02-24 04:10:26,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-02-24 04:10:26,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-02-24 04:10:26,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-02-24 04:10:26,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-02-24 04:10:26,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2021-02-24 04:10:26,568 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 24 [2021-02-24 04:10:26,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:10:26,569 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2021-02-24 04:10:26,569 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-24 04:10:26,569 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2021-02-24 04:10:26,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-02-24 04:10:26,572 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:10:26,572 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] [2021-02-24 04:10:26,573 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 04:10:26,573 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:10:26,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:10:26,574 INFO L82 PathProgramCache]: Analyzing trace with hash -589714176, now seen corresponding path program 1 times [2021-02-24 04:10:26,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:10:26,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1907369007] [2021-02-24 04:10:26,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:10:26,588 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:10:26,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:26,668 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:26,670 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:26,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:26,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:26,677 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:26,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:26,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:10:26,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:26,761 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:26,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:26,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:10:26,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:26,793 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:26,794 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:26,807 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:26,808 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:26,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:10:26,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1907369007] [2021-02-24 04:10:26,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:10:26,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-24 04:10:26,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627451826] [2021-02-24 04:10:26,852 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-24 04:10:26,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:10:26,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-24 04:10:26,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-24 04:10:26,856 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand 6 states. [2021-02-24 04:10:27,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:10:27,222 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2021-02-24 04:10:27,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 04:10:27,223 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2021-02-24 04:10:27,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:10:27,230 INFO L225 Difference]: With dead ends: 58 [2021-02-24 04:10:27,233 INFO L226 Difference]: Without dead ends: 52 [2021-02-24 04:10:27,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-02-24 04:10:27,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-02-24 04:10:27,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2021-02-24 04:10:27,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-02-24 04:10:27,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2021-02-24 04:10:27,279 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 25 [2021-02-24 04:10:27,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:10:27,280 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2021-02-24 04:10:27,280 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-24 04:10:27,280 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2021-02-24 04:10:27,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-02-24 04:10:27,284 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:10:27,285 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:10:27,286 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 04:10:27,286 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:10:27,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:10:27,287 INFO L82 PathProgramCache]: Analyzing trace with hash -374229603, now seen corresponding path program 1 times [2021-02-24 04:10:27,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:10:27,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1374042395] [2021-02-24 04:10:27,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:10:27,295 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:10:27,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:27,350 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:27,351 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:27,351 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:27,352 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:27,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:10:27,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:27,385 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:27,386 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:27,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:10:27,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:27,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:27,400 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:27,409 WARN L141 QuantifierPusher]: treesize reduction 6, result has 33.3 percent of original size [2021-02-24 04:10:27,410 WARN L147 QuantifierPusher]: treesize reduction 6, result has 33.3 percent of original size 3 [2021-02-24 04:10:27,416 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:27,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:10:27,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:27,423 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:27,424 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:27,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:27,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:10:27,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:27,444 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:27,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:27,454 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:27,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:27,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-02-24 04:10:27,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:27,467 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:27,468 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:27,472 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-24 04:10:27,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1374042395] [2021-02-24 04:10:27,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:10:27,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-24 04:10:27,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469772693] [2021-02-24 04:10:27,473 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-24 04:10:27,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:10:27,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-24 04:10:27,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-02-24 04:10:27,475 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand 7 states. [2021-02-24 04:10:27,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:10:27,794 INFO L93 Difference]: Finished difference Result 90 states and 110 transitions. [2021-02-24 04:10:27,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-24 04:10:27,795 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2021-02-24 04:10:27,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:10:27,797 INFO L225 Difference]: With dead ends: 90 [2021-02-24 04:10:27,797 INFO L226 Difference]: Without dead ends: 54 [2021-02-24 04:10:27,799 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-02-24 04:10:27,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-02-24 04:10:27,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2021-02-24 04:10:27,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2021-02-24 04:10:27,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2021-02-24 04:10:27,816 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 41 [2021-02-24 04:10:27,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:10:27,817 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2021-02-24 04:10:27,817 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-24 04:10:27,817 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2021-02-24 04:10:27,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-24 04:10:27,819 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:10:27,819 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:10:27,819 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 04:10:27,819 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:10:27,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:10:27,820 INFO L82 PathProgramCache]: Analyzing trace with hash -245289899, now seen corresponding path program 1 times [2021-02-24 04:10:27,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:10:27,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [904681111] [2021-02-24 04:10:27,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:10:27,823 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:10:27,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:27,851 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:27,851 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:27,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:27,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:27,857 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:27,858 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:27,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:10:27,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:27,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:27,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:27,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:10:27,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:27,964 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:27,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:27,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:27,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:10:27,987 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:27,987 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:27,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:10:27,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:28,019 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:28,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:28,028 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:28,029 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:28,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 04:10:28,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:28,054 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:28,055 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:28,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-24 04:10:28,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [904681111] [2021-02-24 04:10:28,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:10:28,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-24 04:10:28,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958351332] [2021-02-24 04:10:28,065 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-24 04:10:28,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:10:28,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-24 04:10:28,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-02-24 04:10:28,076 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand 9 states. [2021-02-24 04:10:28,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:10:28,736 INFO L93 Difference]: Finished difference Result 82 states and 102 transitions. [2021-02-24 04:10:28,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-24 04:10:28,741 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2021-02-24 04:10:28,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:10:28,748 INFO L225 Difference]: With dead ends: 82 [2021-02-24 04:10:28,748 INFO L226 Difference]: Without dead ends: 76 [2021-02-24 04:10:28,749 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2021-02-24 04:10:28,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-02-24 04:10:28,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2021-02-24 04:10:28,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-02-24 04:10:28,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 91 transitions. [2021-02-24 04:10:28,793 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 91 transitions. Word has length 42 [2021-02-24 04:10:28,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:10:28,793 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 91 transitions. [2021-02-24 04:10:28,793 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-24 04:10:28,794 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 91 transitions. [2021-02-24 04:10:28,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-02-24 04:10:28,803 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:10:28,803 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:10:28,804 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 04:10:28,804 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:10:28,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:10:28,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1853062104, now seen corresponding path program 1 times [2021-02-24 04:10:28,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:10:28,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [568502609] [2021-02-24 04:10:28,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:10:28,809 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:10:28,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:28,879 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:28,881 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:28,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:28,882 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:28,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:10:28,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:28,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:28,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:28,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:10:28,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:28,931 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:28,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:28,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:28,933 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:28,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:10:28,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:28,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:28,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:28,945 WARN L141 QuantifierPusher]: treesize reduction 6, result has 33.3 percent of original size [2021-02-24 04:10:28,946 WARN L147 QuantifierPusher]: treesize reduction 6, result has 33.3 percent of original size 3 [2021-02-24 04:10:28,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:28,952 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:10:28,975 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:28,976 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:28,978 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:28,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:28,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:10:28,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:28,997 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:28,998 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:29,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:29,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:29,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-02-24 04:10:29,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:29,025 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:29,025 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:29,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-02-24 04:10:29,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:29,034 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:29,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:29,043 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-02-24 04:10:29,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [568502609] [2021-02-24 04:10:29,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:10:29,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-24 04:10:29,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876814487] [2021-02-24 04:10:29,044 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-24 04:10:29,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:10:29,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-24 04:10:29,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-02-24 04:10:29,049 INFO L87 Difference]: Start difference. First operand 74 states and 91 transitions. Second operand 7 states. [2021-02-24 04:10:29,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:10:29,375 INFO L93 Difference]: Finished difference Result 138 states and 186 transitions. [2021-02-24 04:10:29,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-24 04:10:29,376 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 58 [2021-02-24 04:10:29,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:10:29,378 INFO L225 Difference]: With dead ends: 138 [2021-02-24 04:10:29,378 INFO L226 Difference]: Without dead ends: 78 [2021-02-24 04:10:29,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-02-24 04:10:29,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-02-24 04:10:29,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-02-24 04:10:29,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2021-02-24 04:10:29,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 97 transitions. [2021-02-24 04:10:29,404 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 97 transitions. Word has length 58 [2021-02-24 04:10:29,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:10:29,405 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 97 transitions. [2021-02-24 04:10:29,405 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-24 04:10:29,405 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 97 transitions. [2021-02-24 04:10:29,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-02-24 04:10:29,410 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:10:29,410 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:10:29,410 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-24 04:10:29,411 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:10:29,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:10:29,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1662933173, now seen corresponding path program 1 times [2021-02-24 04:10:29,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:10:29,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [303682767] [2021-02-24 04:10:29,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:10:29,414 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:10:29,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:29,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:29,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:29,449 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:29,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:29,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:10:29,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:29,479 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:29,479 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:29,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:10:29,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:29,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:29,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:29,496 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:29,497 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:29,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:29,502 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:29,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:10:29,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:29,516 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:29,517 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:29,524 WARN L141 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-02-24 04:10:29,525 WARN L147 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size 7 [2021-02-24 04:10:29,535 WARN L141 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-02-24 04:10:29,536 WARN L147 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size 7 [2021-02-24 04:10:29,546 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:29,547 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:29,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:10:29,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:29,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:29,560 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:29,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 04:10:29,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:29,565 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:29,565 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:29,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-24 04:10:29,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:29,572 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:29,573 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:29,573 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:29,574 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:29,588 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-02-24 04:10:29,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [303682767] [2021-02-24 04:10:29,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:10:29,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-24 04:10:29,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769360793] [2021-02-24 04:10:29,590 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-24 04:10:29,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:10:29,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-24 04:10:29,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-02-24 04:10:29,591 INFO L87 Difference]: Start difference. First operand 78 states and 97 transitions. Second operand 9 states. [2021-02-24 04:10:30,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:10:30,036 INFO L93 Difference]: Finished difference Result 150 states and 205 transitions. [2021-02-24 04:10:30,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-24 04:10:30,037 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 59 [2021-02-24 04:10:30,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:10:30,039 INFO L225 Difference]: With dead ends: 150 [2021-02-24 04:10:30,039 INFO L226 Difference]: Without dead ends: 86 [2021-02-24 04:10:30,040 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-02-24 04:10:30,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-02-24 04:10:30,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 80. [2021-02-24 04:10:30,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2021-02-24 04:10:30,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 100 transitions. [2021-02-24 04:10:30,064 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 100 transitions. Word has length 59 [2021-02-24 04:10:30,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:10:30,064 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 100 transitions. [2021-02-24 04:10:30,064 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-24 04:10:30,064 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 100 transitions. [2021-02-24 04:10:30,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-02-24 04:10:30,066 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:10:30,066 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:10:30,066 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-24 04:10:30,066 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:10:30,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:10:30,067 INFO L82 PathProgramCache]: Analyzing trace with hash -702082707, now seen corresponding path program 1 times [2021-02-24 04:10:30,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:10:30,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [742588604] [2021-02-24 04:10:30,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:10:30,070 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:10:30,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:30,100 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:30,101 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:30,101 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:30,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:30,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:30,109 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:30,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:10:30,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:30,140 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:30,142 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:30,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:10:30,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:30,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:30,182 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:30,189 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:30,190 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:10:30,199 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:30,200 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:30,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:10:30,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:30,228 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:30,229 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:30,238 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:30,239 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:10:30,250 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:30,251 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:30,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:10:30,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:30,268 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:30,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:30,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:30,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:30,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 04:10:30,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:30,288 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:30,289 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:30,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-24 04:10:30,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:30,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:30,301 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:30,309 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-02-24 04:10:30,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [742588604] [2021-02-24 04:10:30,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:10:30,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-24 04:10:30,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109839705] [2021-02-24 04:10:30,311 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-24 04:10:30,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:10:30,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-24 04:10:30,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-02-24 04:10:30,313 INFO L87 Difference]: Start difference. First operand 80 states and 100 transitions. Second operand 11 states. [2021-02-24 04:10:30,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:10:30,987 INFO L93 Difference]: Finished difference Result 126 states and 166 transitions. [2021-02-24 04:10:30,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-24 04:10:30,988 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2021-02-24 04:10:30,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:10:30,990 INFO L225 Difference]: With dead ends: 126 [2021-02-24 04:10:30,990 INFO L226 Difference]: Without dead ends: 120 [2021-02-24 04:10:30,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2021-02-24 04:10:30,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-02-24 04:10:31,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 114. [2021-02-24 04:10:31,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2021-02-24 04:10:31,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 153 transitions. [2021-02-24 04:10:31,022 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 153 transitions. Word has length 60 [2021-02-24 04:10:31,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:10:31,022 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 153 transitions. [2021-02-24 04:10:31,022 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-24 04:10:31,022 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 153 transitions. [2021-02-24 04:10:31,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-02-24 04:10:31,024 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:10:31,024 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:10:31,024 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-24 04:10:31,025 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:10:31,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:10:31,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1046643654, now seen corresponding path program 1 times [2021-02-24 04:10:31,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:10:31,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2045864508] [2021-02-24 04:10:31,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:10:31,028 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:10:31,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:31,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:31,054 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:31,055 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:31,055 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:31,058 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:31,059 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:31,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:10:31,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:31,086 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:31,086 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:31,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:10:31,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:31,101 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:31,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:31,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:31,103 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:31,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:10:31,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:31,117 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:31,118 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:31,119 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:31,119 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:31,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:31,125 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:31,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:10:31,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:31,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:31,137 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:31,145 WARN L141 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-02-24 04:10:31,145 WARN L147 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size 7 [2021-02-24 04:10:31,157 WARN L141 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-02-24 04:10:31,158 WARN L147 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size 7 [2021-02-24 04:10:31,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:31,170 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:31,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:10:31,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:31,183 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:31,183 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:31,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 04:10:31,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:31,188 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:31,188 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:31,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-24 04:10:31,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:31,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:31,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:31,195 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:31,196 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:31,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-02-24 04:10:31,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:31,211 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:31,211 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:31,222 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-02-24 04:10:31,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2045864508] [2021-02-24 04:10:31,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:10:31,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-24 04:10:31,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527935233] [2021-02-24 04:10:31,223 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-24 04:10:31,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:10:31,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-24 04:10:31,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-02-24 04:10:31,224 INFO L87 Difference]: Start difference. First operand 114 states and 153 transitions. Second operand 10 states. [2021-02-24 04:10:31,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:10:31,709 INFO L93 Difference]: Finished difference Result 235 states and 356 transitions. [2021-02-24 04:10:31,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-24 04:10:31,710 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 77 [2021-02-24 04:10:31,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:10:31,713 INFO L225 Difference]: With dead ends: 235 [2021-02-24 04:10:31,713 INFO L226 Difference]: Without dead ends: 135 [2021-02-24 04:10:31,714 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-02-24 04:10:31,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-02-24 04:10:31,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 123. [2021-02-24 04:10:31,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2021-02-24 04:10:31,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 169 transitions. [2021-02-24 04:10:31,748 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 169 transitions. Word has length 77 [2021-02-24 04:10:31,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:10:31,749 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 169 transitions. [2021-02-24 04:10:31,749 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-24 04:10:31,749 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 169 transitions. [2021-02-24 04:10:31,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-02-24 04:10:31,752 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:10:31,752 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:10:31,752 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-24 04:10:31,752 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:10:31,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:10:31,753 INFO L82 PathProgramCache]: Analyzing trace with hash 549553181, now seen corresponding path program 1 times [2021-02-24 04:10:31,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:10:31,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [801186972] [2021-02-24 04:10:31,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:10:31,759 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:10:31,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:31,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:31,784 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:31,785 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:31,785 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:31,788 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:31,789 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:31,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:10:31,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:31,818 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:31,819 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:31,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:10:31,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:31,842 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:31,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:31,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:31,843 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:31,849 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:31,850 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:31,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:10:31,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:31,867 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:31,868 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:31,875 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:31,876 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:10:31,886 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:31,887 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:31,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:10:31,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:31,909 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:31,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:31,921 WARN L141 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-02-24 04:10:31,923 WARN L147 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size 7 [2021-02-24 04:10:31,936 WARN L141 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-02-24 04:10:31,937 WARN L147 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size 7 [2021-02-24 04:10:31,950 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:31,951 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:31,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:10:31,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:31,966 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:31,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:31,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 04:10:31,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:31,974 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:31,975 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:31,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-24 04:10:31,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:31,982 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:31,983 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:31,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-24 04:10:31,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:31,997 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:31,998 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:32,005 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:32,006 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:32,038 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-02-24 04:10:32,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [801186972] [2021-02-24 04:10:32,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:10:32,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-24 04:10:32,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843632589] [2021-02-24 04:10:32,043 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-24 04:10:32,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:10:32,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-24 04:10:32,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-02-24 04:10:32,044 INFO L87 Difference]: Start difference. First operand 123 states and 169 transitions. Second operand 13 states. [2021-02-24 04:10:32,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:10:32,779 INFO L93 Difference]: Finished difference Result 265 states and 408 transitions. [2021-02-24 04:10:32,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-24 04:10:32,780 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 78 [2021-02-24 04:10:32,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:10:32,783 INFO L225 Difference]: With dead ends: 265 [2021-02-24 04:10:32,783 INFO L226 Difference]: Without dead ends: 159 [2021-02-24 04:10:32,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2021-02-24 04:10:32,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-02-24 04:10:32,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 141. [2021-02-24 04:10:32,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2021-02-24 04:10:32,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 199 transitions. [2021-02-24 04:10:32,817 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 199 transitions. Word has length 78 [2021-02-24 04:10:32,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:10:32,818 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 199 transitions. [2021-02-24 04:10:32,818 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-24 04:10:32,818 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 199 transitions. [2021-02-24 04:10:32,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-02-24 04:10:32,821 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:10:32,821 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2021-02-24 04:10:32,821 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-24 04:10:32,821 INFO L428 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:10:32,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:10:32,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1728392861, now seen corresponding path program 2 times [2021-02-24 04:10:32,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:10:32,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [928551716] [2021-02-24 04:10:32,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:10:32,825 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:10:32,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:32,880 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:32,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:32,884 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:32,887 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:32,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:32,893 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:32,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:10:32,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:32,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:32,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:32,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:10:32,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:32,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:32,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:32,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:32,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:32,950 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:32,951 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:32,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:10:32,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:32,965 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:32,965 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:33,005 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:33,005 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:10:33,015 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:33,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:33,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:10:33,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:33,038 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:33,039 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:33,048 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:33,048 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:10:33,061 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:33,062 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:33,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:10:33,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:33,078 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:33,079 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:33,080 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:33,080 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:33,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 04:10:33,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:33,095 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:33,097 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:33,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-24 04:10:33,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:33,102 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:33,103 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:33,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-24 04:10:33,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:33,118 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:33,119 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:33,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:33,120 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:10:33,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:33,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:33,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:10:33,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:33,159 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:33,159 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:33,160 WARN L141 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-02-24 04:10:33,162 WARN L147 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size 7 [2021-02-24 04:10:33,177 WARN L141 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-02-24 04:10:33,178 WARN L147 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size 7 [2021-02-24 04:10:33,193 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:33,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:33,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:10:33,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:33,211 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:33,213 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:33,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 04:10:33,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:33,217 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:33,217 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:33,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-24 04:10:33,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:33,223 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:33,223 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:33,253 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 31 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-02-24 04:10:33,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [928551716] [2021-02-24 04:10:33,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:10:33,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-02-24 04:10:33,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083105592] [2021-02-24 04:10:33,255 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-24 04:10:33,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:10:33,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-24 04:10:33,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-02-24 04:10:33,256 INFO L87 Difference]: Start difference. First operand 141 states and 199 transitions. Second operand 17 states. [2021-02-24 04:10:34,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:10:34,606 INFO L93 Difference]: Finished difference Result 273 states and 428 transitions. [2021-02-24 04:10:34,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-24 04:10:34,607 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 113 [2021-02-24 04:10:34,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:10:34,611 INFO L225 Difference]: With dead ends: 273 [2021-02-24 04:10:34,611 INFO L226 Difference]: Without dead ends: 124 [2021-02-24 04:10:34,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=171, Invalid=885, Unknown=0, NotChecked=0, Total=1056 [2021-02-24 04:10:34,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-02-24 04:10:34,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 111. [2021-02-24 04:10:34,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2021-02-24 04:10:34,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 135 transitions. [2021-02-24 04:10:34,641 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 135 transitions. Word has length 113 [2021-02-24 04:10:34,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:10:34,642 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 135 transitions. [2021-02-24 04:10:34,642 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-02-24 04:10:34,642 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 135 transitions. [2021-02-24 04:10:34,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-02-24 04:10:34,644 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:10:34,644 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1] [2021-02-24 04:10:34,645 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-24 04:10:34,645 INFO L428 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:10:34,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:10:34,645 INFO L82 PathProgramCache]: Analyzing trace with hash -645905939, now seen corresponding path program 1 times [2021-02-24 04:10:34,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:10:34,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2134573007] [2021-02-24 04:10:34,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:10:34,648 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:10:34,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:34,682 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:34,683 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:34,684 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:34,685 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:10:34,694 WARN L141 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-02-24 04:10:34,696 WARN L147 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size 7 [2021-02-24 04:10:34,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:34,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:34,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:10:34,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:34,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:34,736 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:34,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:10:34,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:34,757 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:34,757 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:34,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:34,759 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:10:34,769 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:34,770 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-24 04:10:34,789 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:34,790 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:10:34,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:10:34,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:34,819 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:34,820 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:34,821 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:34,821 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:10:34,837 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:34,838 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-24 04:10:34,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:34,891 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:10:34,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:10:34,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:34,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:34,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:34,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:34,922 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:10:34,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:34,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-24 04:10:34,966 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:34,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:10:34,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:10:34,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:34,994 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:34,995 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:34,997 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:34,997 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:10:35,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 04:10:35,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:35,023 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:35,023 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:35,024 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:35,025 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:10:35,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-24 04:10:35,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:35,054 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:35,055 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:35,057 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:35,058 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:10:35,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-24 04:10:35,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:35,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:35,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:35,073 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:35,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:10:35,075 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:35,075 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-24 04:10:35,100 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:35,101 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:10:35,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:10:35,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:35,106 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:35,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:35,107 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:35,107 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:10:35,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 04:10:35,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:35,112 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:35,113 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:35,114 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:35,114 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:10:35,162 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-02-24 04:10:35,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2134573007] [2021-02-24 04:10:35,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:10:35,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-02-24 04:10:35,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374601006] [2021-02-24 04:10:35,164 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-02-24 04:10:35,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:10:35,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-02-24 04:10:35,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-02-24 04:10:35,165 INFO L87 Difference]: Start difference. First operand 111 states and 135 transitions. Second operand 18 states. [2021-02-24 04:10:36,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:10:36,906 INFO L93 Difference]: Finished difference Result 145 states and 175 transitions. [2021-02-24 04:10:36,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-02-24 04:10:36,906 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 95 [2021-02-24 04:10:36,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:10:36,913 INFO L225 Difference]: With dead ends: 145 [2021-02-24 04:10:36,914 INFO L226 Difference]: Without dead ends: 139 [2021-02-24 04:10:36,916 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=176, Invalid=1546, Unknown=0, NotChecked=0, Total=1722 [2021-02-24 04:10:36,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-02-24 04:10:36,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 119. [2021-02-24 04:10:36,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2021-02-24 04:10:36,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 145 transitions. [2021-02-24 04:10:36,963 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 145 transitions. Word has length 95 [2021-02-24 04:10:36,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:10:36,963 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 145 transitions. [2021-02-24 04:10:36,963 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-02-24 04:10:36,963 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 145 transitions. [2021-02-24 04:10:36,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-02-24 04:10:36,965 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:10:36,965 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-02-24 04:10:36,965 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-24 04:10:36,966 INFO L428 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:10:36,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:10:36,966 INFO L82 PathProgramCache]: Analyzing trace with hash -734654733, now seen corresponding path program 2 times [2021-02-24 04:10:36,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:10:36,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1222110358] [2021-02-24 04:10:36,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:10:36,969 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:10:36,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:36,994 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:36,995 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:36,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:36,996 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:36,999 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:36,999 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:37,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:10:37,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:37,025 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:37,026 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:37,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:10:37,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:37,040 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:37,042 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:37,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:37,043 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:37,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:10:37,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:37,052 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:37,053 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:37,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:37,054 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:37,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:10:37,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:37,061 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:37,062 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:37,062 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:37,063 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:37,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:37,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:37,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:10:37,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:37,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:37,078 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:37,084 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:37,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:37,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 04:10:37,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:37,099 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:37,100 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:37,101 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:37,101 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:10:37,115 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:37,115 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:37,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-24 04:10:37,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:37,130 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:37,131 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:37,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-02-24 04:10:37,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:37,139 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:37,139 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:37,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:10:37,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:37,142 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:37,143 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:37,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 04:10:37,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:37,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:37,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:37,162 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-02-24 04:10:37,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1222110358] [2021-02-24 04:10:37,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:10:37,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-24 04:10:37,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774182881] [2021-02-24 04:10:37,164 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-24 04:10:37,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:10:37,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-24 04:10:37,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-02-24 04:10:37,165 INFO L87 Difference]: Start difference. First operand 119 states and 145 transitions. Second operand 9 states. [2021-02-24 04:10:37,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:10:37,592 INFO L93 Difference]: Finished difference Result 205 states and 261 transitions. [2021-02-24 04:10:37,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-24 04:10:37,593 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 96 [2021-02-24 04:10:37,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:10:37,595 INFO L225 Difference]: With dead ends: 205 [2021-02-24 04:10:37,595 INFO L226 Difference]: Without dead ends: 102 [2021-02-24 04:10:37,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-02-24 04:10:37,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-02-24 04:10:37,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2021-02-24 04:10:37,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2021-02-24 04:10:37,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 122 transitions. [2021-02-24 04:10:37,618 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 122 transitions. Word has length 96 [2021-02-24 04:10:37,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:10:37,618 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 122 transitions. [2021-02-24 04:10:37,618 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-24 04:10:37,619 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 122 transitions. [2021-02-24 04:10:37,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-02-24 04:10:37,620 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:10:37,620 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-02-24 04:10:37,621 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-24 04:10:37,621 INFO L428 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:10:37,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:10:37,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1859044421, now seen corresponding path program 2 times [2021-02-24 04:10:37,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:10:37,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209035921] [2021-02-24 04:10:37,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:10:37,624 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:10:37,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:37,655 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:37,655 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:37,656 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:37,656 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:37,660 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:37,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:37,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:10:37,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:37,686 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:37,686 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:37,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:10:37,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:37,706 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:37,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:37,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:37,707 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:37,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:10:37,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:37,720 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:37,721 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:37,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:37,722 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:37,727 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:37,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:37,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:10:37,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:37,768 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:37,769 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:37,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:37,777 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:10:37,787 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:37,788 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:37,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:10:37,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:37,805 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:37,805 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:37,814 WARN L141 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-02-24 04:10:37,815 WARN L147 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size 7 [2021-02-24 04:10:37,828 WARN L141 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-02-24 04:10:37,829 WARN L147 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size 7 [2021-02-24 04:10:37,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:37,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:37,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:10:37,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:37,859 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:37,860 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:37,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 04:10:37,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:37,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:37,864 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:37,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-24 04:10:37,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:37,870 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:37,870 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:37,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-24 04:10:37,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:37,880 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:37,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:37,881 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:37,881 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:37,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-02-24 04:10:37,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:37,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:37,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:37,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:10:37,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:37,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:37,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:37,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:10:37,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:37,918 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:37,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:37,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 04:10:37,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:37,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:37,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:37,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-24 04:10:37,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:37,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:37,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:37,971 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-02-24 04:10:37,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209035921] [2021-02-24 04:10:37,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:10:37,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-24 04:10:37,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100113857] [2021-02-24 04:10:37,973 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-24 04:10:37,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:10:37,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-24 04:10:37,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-02-24 04:10:37,974 INFO L87 Difference]: Start difference. First operand 102 states and 122 transitions. Second operand 13 states. [2021-02-24 04:10:38,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:10:38,604 INFO L93 Difference]: Finished difference Result 187 states and 231 transitions. [2021-02-24 04:10:38,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-24 04:10:38,604 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 131 [2021-02-24 04:10:38,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:10:38,606 INFO L225 Difference]: With dead ends: 187 [2021-02-24 04:10:38,606 INFO L226 Difference]: Without dead ends: 102 [2021-02-24 04:10:38,607 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2021-02-24 04:10:38,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-02-24 04:10:38,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2021-02-24 04:10:38,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2021-02-24 04:10:38,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 121 transitions. [2021-02-24 04:10:38,629 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 121 transitions. Word has length 131 [2021-02-24 04:10:38,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:10:38,629 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 121 transitions. [2021-02-24 04:10:38,629 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-24 04:10:38,630 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 121 transitions. [2021-02-24 04:10:38,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-02-24 04:10:38,632 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:10:38,632 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 8, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-02-24 04:10:38,633 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-02-24 04:10:38,633 INFO L428 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:10:38,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:10:38,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1120622697, now seen corresponding path program 3 times [2021-02-24 04:10:38,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:10:38,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [829626213] [2021-02-24 04:10:38,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:10:38,636 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:10:38,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:38,684 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:38,685 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:38,685 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:38,685 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:38,688 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:38,689 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:38,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:10:38,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:38,731 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:38,731 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:38,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 04:10:38,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:38,762 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:38,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:38,768 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:38,769 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:10:38,778 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:38,778 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:38,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:10:38,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:38,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:38,801 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:38,808 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:38,808 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:38,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:10:38,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:38,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:38,825 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:38,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:10:38,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:38,829 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:38,829 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:38,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:10:38,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:38,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:38,832 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:38,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 04:10:38,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:38,834 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:38,835 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:38,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-24 04:10:38,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:38,838 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:38,838 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:38,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-24 04:10:38,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:38,847 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:38,848 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:38,850 WARN L141 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-02-24 04:10:38,850 WARN L147 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size 7 [2021-02-24 04:10:38,863 WARN L141 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-02-24 04:10:38,864 WARN L147 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size 7 [2021-02-24 04:10:38,878 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:38,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:10:38,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:10:38,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:38,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:38,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:38,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 04:10:38,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:38,897 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:38,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:38,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-02-24 04:10:38,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:38,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:38,916 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:38,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:10:38,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:38,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:38,922 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:38,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:10:38,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:38,926 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:38,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:38,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:10:38,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:38,928 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:38,929 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:38,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 04:10:38,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:38,931 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:38,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:38,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-24 04:10:38,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:38,934 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:38,935 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:38,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-24 04:10:38,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:38,939 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:38,940 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:38,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-24 04:10:38,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:38,942 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:38,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:38,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-24 04:10:38,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:10:38,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:10:38,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:10:38,997 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 6 proven. 40 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-02-24 04:10:38,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [829626213] [2021-02-24 04:10:38,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:10:38,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-24 04:10:38,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360538128] [2021-02-24 04:10:38,998 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-24 04:10:38,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:10:38,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-24 04:10:38,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-02-24 04:10:38,999 INFO L87 Difference]: Start difference. First operand 102 states and 121 transitions. Second operand 12 states. [2021-02-24 04:10:39,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:10:39,551 INFO L93 Difference]: Finished difference Result 113 states and 135 transitions. [2021-02-24 04:10:39,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-24 04:10:39,551 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 183 [2021-02-24 04:10:39,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:10:39,552 INFO L225 Difference]: With dead ends: 113 [2021-02-24 04:10:39,552 INFO L226 Difference]: Without dead ends: 0 [2021-02-24 04:10:39,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2021-02-24 04:10:39,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-24 04:10:39,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-24 04:10:39,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-24 04:10:39,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-24 04:10:39,554 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 183 [2021-02-24 04:10:39,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:10:39,554 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-24 04:10:39,555 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-24 04:10:39,555 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-24 04:10:39,555 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-24 04:10:39,555 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-02-24 04:10:39,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-24 04:10:44,073 WARN L202 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 9 [2021-02-24 04:10:44,574 WARN L202 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 23 [2021-02-24 04:10:44,713 WARN L202 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 6 [2021-02-24 04:10:45,226 WARN L202 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 32 [2021-02-24 04:10:45,656 WARN L202 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 24 [2021-02-24 04:10:45,937 WARN L202 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 23 [2021-02-24 04:10:46,351 WARN L202 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 25 [2021-02-24 04:10:46,741 WARN L202 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 25 [2021-02-24 04:10:47,030 WARN L202 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 19 [2021-02-24 04:10:47,281 WARN L202 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 26 [2021-02-24 04:10:47,760 WARN L202 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 28 [2021-02-24 04:10:48,059 WARN L202 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 26 [2021-02-24 04:10:48,748 WARN L202 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 30 [2021-02-24 04:10:48,956 WARN L202 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 19 [2021-02-24 04:10:49,456 WARN L202 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 28 [2021-02-24 04:10:49,761 WARN L202 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 30 [2021-02-24 04:10:50,125 WARN L202 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 25 [2021-02-24 04:10:50,266 WARN L202 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 9 [2021-02-24 04:10:50,951 WARN L202 SmtUtils]: Spent 621.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 30 [2021-02-24 04:10:51,103 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2021-02-24 04:10:51,104 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 4) no Hoare annotation was computed. [2021-02-24 04:10:51,104 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2021-02-24 04:10:51,104 INFO L192 CegarLoopUtils]: At program point L4-3(line 4) the Hoare annotation is: true [2021-02-24 04:10:51,104 INFO L192 CegarLoopUtils]: At program point L4-4(line 4) the Hoare annotation is: true [2021-02-24 04:10:51,104 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 04:10:51,104 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-24 04:10:51,104 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 4) the Hoare annotation is: true [2021-02-24 04:10:51,104 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|)) [2021-02-24 04:10:51,105 INFO L192 CegarLoopUtils]: At program point L4(line 4) the Hoare annotation is: true [2021-02-24 04:10:51,105 INFO L192 CegarLoopUtils]: At program point L4-1(line 4) the Hoare annotation is: true [2021-02-24 04:10:51,105 INFO L192 CegarLoopUtils]: At program point L4-2(line 4) the Hoare annotation is: true [2021-02-24 04:10:51,105 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-24 04:10:51,105 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-24 04:10:51,105 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 04:10:51,105 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-24 04:10:51,105 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-24 04:10:51,105 INFO L185 CegarLoopUtils]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 41) the Hoare annotation is: false [2021-02-24 04:10:51,106 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 37 44) the Hoare annotation is: true [2021-02-24 04:10:51,106 INFO L185 CegarLoopUtils]: At program point mainEXIT(lines 37 44) the Hoare annotation is: (<= 4 main_~x~0) [2021-02-24 04:10:51,106 INFO L185 CegarLoopUtils]: At program point mainFINAL(lines 37 44) the Hoare annotation is: (<= 4 main_~x~0) [2021-02-24 04:10:51,106 INFO L185 CegarLoopUtils]: At program point L41(line 41) the Hoare annotation is: false [2021-02-24 04:10:51,106 INFO L185 CegarLoopUtils]: At program point L40(lines 40 42) the Hoare annotation is: (and (<= 4 main_~x~0) (<= main_~result~0 3) (<= main_~x~0 4) (< 2 main_~result~0)) [2021-02-24 04:10:51,106 INFO L185 CegarLoopUtils]: At program point L41-1(line 41) the Hoare annotation is: false [2021-02-24 04:10:51,106 INFO L185 CegarLoopUtils]: At program point L39(line 39) the Hoare annotation is: (and (<= 4 main_~x~0) (<= main_~x~0 4)) [2021-02-24 04:10:51,106 INFO L185 CegarLoopUtils]: At program point L39-1(line 39) the Hoare annotation is: (and (<= 4 main_~x~0) (<= |main_#t~ret11| 3) (<= main_~x~0 4) (<= 3 |main_#t~ret11|)) [2021-02-24 04:10:51,106 INFO L185 CegarLoopUtils]: At program point L40-2(lines 40 42) the Hoare annotation is: (<= 4 main_~x~0) [2021-02-24 04:10:51,107 INFO L185 CegarLoopUtils]: At program point L39-2(line 39) the Hoare annotation is: (and (<= 4 main_~x~0) (<= |main_#t~ret11| 3) (<= main_~x~0 4) (<= 3 |main_#t~ret11|)) [2021-02-24 04:10:51,107 INFO L185 CegarLoopUtils]: At program point L39-3(line 39) the Hoare annotation is: (and (<= 4 main_~x~0) (<= main_~result~0 3) (<= |main_#t~ret11| 3) (<= main_~x~0 4) (< 2 main_~result~0) (<= 3 |main_#t~ret11|)) [2021-02-24 04:10:51,107 INFO L192 CegarLoopUtils]: At program point fibo2ENTRY(lines 19 27) the Hoare annotation is: true [2021-02-24 04:10:51,107 INFO L185 CegarLoopUtils]: At program point L25(line 25) the Hoare annotation is: (and (= fibo2_~n |fibo2_#in~n|) (< 1 fibo2_~n)) [2021-02-24 04:10:51,107 INFO L185 CegarLoopUtils]: At program point L25-1(line 25) the Hoare annotation is: (and (let ((.cse0 (= fibo2_~n |fibo2_#in~n|))) (or (and (<= |fibo2_#t~ret9| 1) .cse0 (< 1 fibo2_~n) (<= 1 |fibo2_#t~ret9|)) (and (<= 3 fibo2_~n) .cse0))) (or (<= fibo2_~n 2) (not (<= |fibo2_#in~n| 3)))) [2021-02-24 04:10:51,107 INFO L185 CegarLoopUtils]: At program point L23(line 23) the Hoare annotation is: (and (= fibo2_~n |fibo2_#in~n|) (<= |fibo2_#in~n| 1) (< 0 fibo2_~n)) [2021-02-24 04:10:51,108 INFO L185 CegarLoopUtils]: At program point L25-2(line 25) the Hoare annotation is: (and (let ((.cse0 (= fibo2_~n |fibo2_#in~n|))) (or (and (<= |fibo2_#t~ret9| 1) .cse0 (< 1 fibo2_~n) (<= 1 |fibo2_#t~ret9|)) (and (<= 3 fibo2_~n) .cse0))) (or (<= fibo2_~n 2) (not (<= |fibo2_#in~n| 3)))) [2021-02-24 04:10:51,108 INFO L185 CegarLoopUtils]: At program point L22(lines 22 26) the Hoare annotation is: (and (= fibo2_~n |fibo2_#in~n|) (< 0 fibo2_~n)) [2021-02-24 04:10:51,108 INFO L185 CegarLoopUtils]: At program point L25-3(line 25) the Hoare annotation is: (and (let ((.cse1 (<= |fibo2_#t~ret9| 1)) (.cse2 (= fibo2_~n |fibo2_#in~n|)) (.cse3 (<= 1 |fibo2_#t~ret9|)) (.cse0 (+ |fibo2_#t~ret9| |fibo2_#t~ret10|))) (or (and (<= 2 .cse0) (<= 3 fibo2_~n) .cse1 .cse2 (<= .cse0 2) .cse3) (and (<= 4 |fibo2_#in~n|) .cse2) (and .cse1 .cse2 (<= fibo2_~n 2) (<= .cse0 1) .cse3 (<= 1 .cse0)))) (not (<= |fibo2_#in~n| 1))) [2021-02-24 04:10:51,108 INFO L185 CegarLoopUtils]: At program point L21(line 21) the Hoare annotation is: (and (= fibo2_~n |fibo2_#in~n|) (<= |fibo2_#in~n| 0)) [2021-02-24 04:10:51,108 INFO L185 CegarLoopUtils]: At program point L25-4(line 25) the Hoare annotation is: (and (let ((.cse1 (<= |fibo2_#t~ret9| 1)) (.cse2 (= fibo2_~n |fibo2_#in~n|)) (.cse3 (<= 1 |fibo2_#t~ret9|)) (.cse0 (+ |fibo2_#t~ret9| |fibo2_#t~ret10|))) (or (and (<= 2 .cse0) (<= 3 fibo2_~n) .cse1 .cse2 (<= .cse0 2) .cse3) (and (<= 4 |fibo2_#in~n|) .cse2) (and .cse1 .cse2 (<= fibo2_~n 2) (<= .cse0 1) .cse3 (<= 1 .cse0)))) (not (<= |fibo2_#in~n| 1))) [2021-02-24 04:10:51,108 INFO L185 CegarLoopUtils]: At program point L20(lines 20 26) the Hoare annotation is: (= fibo2_~n |fibo2_#in~n|) [2021-02-24 04:10:51,109 INFO L185 CegarLoopUtils]: At program point L25-5(line 25) the Hoare annotation is: (and (= fibo2_~n |fibo2_#in~n|) (let ((.cse0 (<= |fibo2_#t~ret9| 1)) (.cse1 (+ |fibo2_#t~ret9| |fibo2_#t~ret10|)) (.cse2 (<= 1 |fibo2_#t~ret9|))) (or (and (<= 1 |fibo2_#res|) (<= |fibo2_#res| 1) .cse0 (<= fibo2_~n 2) (<= .cse1 1) .cse2 (<= 1 .cse1)) (not (<= |fibo2_#in~n| 3)) (and (<= 2 .cse1) (<= |fibo2_#res| 2) (<= 3 fibo2_~n) (<= 2 |fibo2_#res|) .cse0 (<= .cse1 2) .cse2))) (not (<= |fibo2_#in~n| 1))) [2021-02-24 04:10:51,109 INFO L185 CegarLoopUtils]: At program point L25-6(line 25) the Hoare annotation is: (let ((.cse2 (<= |fibo2_#t~ret9| 1)) (.cse1 (= fibo2_~n |fibo2_#in~n|)) (.cse3 (<= 1 |fibo2_#t~ret9|))) (let ((.cse0 (and (<= 1 |fibo2_#res|) (<= |fibo2_#res| 1) .cse2 .cse1 (<= fibo2_~n 2) .cse3))) (and (or .cse0 (<= 3 fibo2_~n)) .cse1 (or .cse0 (and (<= |fibo2_#res| 2) (<= 2 |fibo2_#res|) .cse2 .cse3) (not (<= |fibo2_#in~n| 3))) (not (<= |fibo2_#in~n| 1))))) [2021-02-24 04:10:51,109 INFO L185 CegarLoopUtils]: At program point fibo2FINAL(lines 19 27) the Hoare annotation is: (and (or (and (<= 1 |fibo2_#res|) (<= fibo2_~n 2)) (and (<= |fibo2_#res| 2) (<= 2 |fibo2_#res|)) (<= |fibo2_#in~n| 0) (not (<= |fibo2_#in~n| 3))) (= fibo2_~n |fibo2_#in~n|) (or (and (<= |fibo2_#res| 0) (<= 0 |fibo2_#res|)) (and (<= |fibo2_#res| 1) (< 0 fibo2_~n)) (not (<= |fibo2_#in~n| 2)))) [2021-02-24 04:10:51,109 INFO L185 CegarLoopUtils]: At program point fibo2EXIT(lines 19 27) the Hoare annotation is: (and (or (and (<= 1 |fibo2_#res|) (<= fibo2_~n 2)) (and (<= |fibo2_#res| 2) (<= 2 |fibo2_#res|)) (<= |fibo2_#in~n| 0) (not (<= |fibo2_#in~n| 3))) (= fibo2_~n |fibo2_#in~n|) (or (and (<= |fibo2_#res| 0) (<= 0 |fibo2_#res|)) (and (<= |fibo2_#res| 1) (< 0 fibo2_~n)) (not (<= |fibo2_#in~n| 2)))) [2021-02-24 04:10:51,109 INFO L192 CegarLoopUtils]: At program point fibo1ENTRY(lines 9 17) the Hoare annotation is: true [2021-02-24 04:10:51,110 INFO L185 CegarLoopUtils]: At program point L15(line 15) the Hoare annotation is: (and (not (<= |fibo1_#in~n| 2)) (= fibo1_~n |fibo1_#in~n|)) [2021-02-24 04:10:51,110 INFO L185 CegarLoopUtils]: At program point L15-1(line 15) the Hoare annotation is: (and (not (<= |fibo1_#in~n| 2)) (let ((.cse0 (= fibo1_~n |fibo1_#in~n|))) (or (and (<= 4 fibo1_~n) .cse0 (<= |fibo1_#t~ret7| 2) (<= 2 |fibo1_#t~ret7|)) (and (<= 1 |fibo1_#t~ret7|) (<= |fibo1_#t~ret7| 1) .cse0 (<= fibo1_~n 3)) (and (<= 5 fibo1_~n) .cse0)))) [2021-02-24 04:10:51,110 INFO L185 CegarLoopUtils]: At program point L13(line 13) the Hoare annotation is: (and (<= |fibo1_#in~n| 1) (< 0 fibo1_~n) (= fibo1_~n |fibo1_#in~n|)) [2021-02-24 04:10:51,110 INFO L185 CegarLoopUtils]: At program point L15-2(line 15) the Hoare annotation is: (and (not (<= |fibo1_#in~n| 2)) (let ((.cse0 (= fibo1_~n |fibo1_#in~n|))) (or (and (<= 4 fibo1_~n) .cse0 (<= |fibo1_#t~ret7| 2) (<= 2 |fibo1_#t~ret7|)) (and (<= 1 |fibo1_#t~ret7|) (<= |fibo1_#t~ret7| 1) .cse0 (<= fibo1_~n 3)) (and (<= 5 fibo1_~n) .cse0)))) [2021-02-24 04:10:51,110 INFO L185 CegarLoopUtils]: At program point L12(lines 12 16) the Hoare annotation is: (and (< 0 fibo1_~n) (= fibo1_~n |fibo1_#in~n|)) [2021-02-24 04:10:51,110 INFO L185 CegarLoopUtils]: At program point L15-3(line 15) the Hoare annotation is: (let ((.cse1 (= fibo1_~n |fibo1_#in~n|))) (or (and (<= 3 fibo1_~n) (or (and (<= 1 |fibo1_#t~ret7|) (<= |fibo1_#t~ret7| 1) (<= fibo1_~n 3)) (let ((.cse0 (+ |fibo1_#t~ret7| |fibo1_#t~ret8|))) (and (<= .cse0 3) (<= 3 .cse0) (<= |fibo1_#t~ret7| 2) (<= 2 |fibo1_#t~ret7|)))) .cse1) (and (<= 5 fibo1_~n) .cse1))) [2021-02-24 04:10:51,110 INFO L185 CegarLoopUtils]: At program point L11(line 11) the Hoare annotation is: (and (<= |fibo1_#in~n| 0) (= fibo1_~n |fibo1_#in~n|)) [2021-02-24 04:10:51,111 INFO L185 CegarLoopUtils]: At program point L15-4(line 15) the Hoare annotation is: (let ((.cse1 (= fibo1_~n |fibo1_#in~n|))) (or (and (<= 3 fibo1_~n) (or (and (<= 1 |fibo1_#t~ret7|) (<= |fibo1_#t~ret7| 1) (<= fibo1_~n 3)) (let ((.cse0 (+ |fibo1_#t~ret7| |fibo1_#t~ret8|))) (and (<= .cse0 3) (<= 3 .cse0) (<= |fibo1_#t~ret7| 2) (<= 2 |fibo1_#t~ret7|)))) .cse1) (and (<= 5 fibo1_~n) .cse1))) [2021-02-24 04:10:51,111 INFO L185 CegarLoopUtils]: At program point fibo1FINAL(lines 9 17) the Hoare annotation is: (and (or (and (<= |fibo1_#in~n| 0) (<= 0 |fibo1_#res|) (<= |fibo1_#res| 0)) (and (<= |fibo1_#in~n| 1) (< 0 fibo1_~n) (<= |fibo1_#res| 1) (<= 1 |fibo1_#res|)) (not (<= |fibo1_#in~n| 2))) (let ((.cse0 (= fibo1_~n |fibo1_#in~n|))) (or (and .cse0 (<= fibo1_~n 3)) (and (<= 5 fibo1_~n) .cse0) (and (<= |fibo1_#res| 3) (<= 3 |fibo1_#res|) .cse0)))) [2021-02-24 04:10:51,111 INFO L185 CegarLoopUtils]: At program point L10(lines 10 16) the Hoare annotation is: (= fibo1_~n |fibo1_#in~n|) [2021-02-24 04:10:51,111 INFO L185 CegarLoopUtils]: At program point L15-5(line 15) the Hoare annotation is: (let ((.cse3 (= fibo1_~n |fibo1_#in~n|))) (let ((.cse2 (<= 2 |fibo1_#t~ret7|)) (.cse0 (and (<= 5 fibo1_~n) .cse3))) (and (or .cse0 (and (<= 3 fibo1_~n) (or (let ((.cse1 (+ |fibo1_#t~ret7| |fibo1_#t~ret8|))) (and (<= |fibo1_#res| 3) (<= .cse1 3) (<= 3 |fibo1_#res|) (<= 3 .cse1) (<= |fibo1_#t~ret7| 2) .cse2)) (and (<= 1 |fibo1_#t~ret7|) (<= |fibo1_#t~ret7| 1))))) (or (and .cse3 .cse2) (and .cse3 (<= fibo1_~n 3)) .cse0)))) [2021-02-24 04:10:51,111 INFO L185 CegarLoopUtils]: At program point L15-6(line 15) the Hoare annotation is: (let ((.cse0 (= fibo1_~n |fibo1_#in~n|))) (or (and (<= 5 fibo1_~n) .cse0) (and (<= 3 fibo1_~n) (or (and (<= 1 |fibo1_#t~ret7|) (<= |fibo1_#t~ret7| 1) (<= fibo1_~n 3)) (and (<= |fibo1_#res| 3) (<= 3 |fibo1_#res|) (<= |fibo1_#t~ret7| 2) (<= 2 |fibo1_#t~ret7|))) .cse0))) [2021-02-24 04:10:51,112 INFO L185 CegarLoopUtils]: At program point fibo1EXIT(lines 9 17) the Hoare annotation is: (and (or (and (<= |fibo1_#in~n| 0) (<= 0 |fibo1_#res|) (<= |fibo1_#res| 0)) (and (<= |fibo1_#in~n| 1) (< 0 fibo1_~n) (<= |fibo1_#res| 1) (<= 1 |fibo1_#res|)) (not (<= |fibo1_#in~n| 2))) (let ((.cse0 (= fibo1_~n |fibo1_#in~n|))) (or (and .cse0 (<= fibo1_~n 3)) (and (<= 5 fibo1_~n) .cse0) (and (<= |fibo1_#res| 3) (<= 3 |fibo1_#res|) .cse0)))) [2021-02-24 04:10:51,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 04:10:51 BoogieIcfgContainer [2021-02-24 04:10:51,133 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 04:10:51,134 INFO L168 Benchmark]: Toolchain (without parser) took 26952.89 ms. Allocated memory was 174.1 MB in the beginning and 436.2 MB in the end (delta: 262.1 MB). Free memory was 150.1 MB in the beginning and 393.7 MB in the end (delta: -243.6 MB). Peak memory consumption was 259.2 MB. Max. memory is 8.0 GB. [2021-02-24 04:10:51,134 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 174.1 MB. Free memory is still 146.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 04:10:51,134 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.28 ms. Allocated memory is still 174.1 MB. Free memory was 149.0 MB in the beginning and 138.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-24 04:10:51,135 INFO L168 Benchmark]: Boogie Preprocessor took 36.27 ms. Allocated memory is still 174.1 MB. Free memory was 138.9 MB in the beginning and 137.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-24 04:10:51,135 INFO L168 Benchmark]: RCFGBuilder took 638.85 ms. Allocated memory is still 174.1 MB. Free memory was 137.5 MB in the beginning and 121.9 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-02-24 04:10:51,135 INFO L168 Benchmark]: TraceAbstraction took 25964.10 ms. Allocated memory was 174.1 MB in the beginning and 436.2 MB in the end (delta: 262.1 MB). Free memory was 121.4 MB in the beginning and 393.7 MB in the end (delta: -272.4 MB). Peak memory consumption was 230.9 MB. Max. memory is 8.0 GB. [2021-02-24 04:10:51,136 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 174.1 MB. Free memory is still 146.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 288.28 ms. Allocated memory is still 174.1 MB. Free memory was 149.0 MB in the beginning and 138.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 36.27 ms. Allocated memory is still 174.1 MB. Free memory was 138.9 MB in the beginning and 137.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 638.85 ms. Allocated memory is still 174.1 MB. Free memory was 137.5 MB in the beginning and 121.9 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 25964.10 ms. Allocated memory was 174.1 MB in the beginning and 436.2 MB in the end (delta: 262.1 MB). Free memory was 121.4 MB in the beginning and 393.7 MB in the end (delta: -272.4 MB). Peak memory consumption was 230.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 41]: 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: 37]: Procedure Contract for main Derived contract for procedure main: 4 <= x - ProcedureContractResult [Line: 19]: Procedure Contract for fibo2 Derived contract for procedure fibo2: (((((1 <= \result && n <= 2) || (\result <= 2 && 2 <= \result)) || \old(n) <= 0) || !(\old(n) <= 3)) && n == \old(n)) && (((\result <= 0 && 0 <= \result) || (\result <= 1 && 0 < n)) || !(\old(n) <= 2)) - ProcedureContractResult [Line: 9]: Procedure Contract for fibo1 Derived contract for procedure fibo1: ((((\old(n) <= 0 && 0 <= \result) && \result <= 0) || (((\old(n) <= 1 && 0 < n) && \result <= 1) && 1 <= \result)) || !(\old(n) <= 2)) && (((n == \old(n) && n <= 3) || (5 <= n && n == \old(n))) || ((\result <= 3 && 3 <= \result) && n == \old(n))) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 57 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 14.2s, OverallIterations: 14, TraceHistogramMax: 10, AutomataDifference: 9.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 11.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 697 SDtfs, 1111 SDslu, 1539 SDs, 0 SdLazy, 4556 SolverSat, 460 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 502 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 794 ImplicationChecksByTransitivity, 5.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=141occurred 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: 0.4s AutomataMinimizationTime, 14 MinimizatonAttempts, 81 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 54 LocationsWithAnnotation, 1622 PreInvPairs, 2913 NumberOfFragments, 971 HoareAnnotationTreeSize, 1622 FomulaSimplifications, 275698 FormulaSimplificationTreeSizeReduction, 4.3s HoareSimplificationTime, 54 FomulaSimplificationsInter, 34696 FormulaSimplificationTreeSizeReductionInter, 7.0s 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...