/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/id2_i5_o5-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 01:48:48,572 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 01:48:48,575 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 01:48:48,635 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-22 01:48:48,674 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 01:48:48,677 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 01:48:48,680 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 01:48:48,682 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 01:48:48,686 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 01:48:48,688 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 01:48:48,697 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 01:48:48,710 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 01:48:48,712 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 01:48:48,715 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 01:48:48,717 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 01:48:48,720 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 01:48:48,729 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-22 01:48:48,742 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 01:48:48,744 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 01:48:48,744 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 01:48:48,746 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 01:48:48,774 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 01:48:48,775 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 01:48:48,780 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 01:48:48,780 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 01:48:48,781 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 01:48:48,781 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 01:48:48,781 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 01:48:48,781 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 01:48:48,781 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 01:48:48,782 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 01:48:48,783 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 01:48:48,783 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 01:48:48,784 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 01:48:48,784 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 01:48:48,784 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 01:48:48,785 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 01:48:48,785 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 01:48:48,785 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 01:48:48,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:48:48,785 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 01:48:48,786 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 01:48:48,786 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 01:48:48,786 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 01:48:48,786 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 01:48:49,281 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 01:48:49,322 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 01:48:49,326 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 01:48:49,327 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 01:48:49,328 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 01:48:49,329 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id2_i5_o5-2.c [2021-02-22 01:48:49,438 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91701af8f/8cacf6adeae54b67a20aed56b9c305a5/FLAGf65dd645e [2021-02-22 01:48:50,077 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 01:48:50,078 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id2_i5_o5-2.c [2021-02-22 01:48:50,085 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91701af8f/8cacf6adeae54b67a20aed56b9c305a5/FLAGf65dd645e [2021-02-22 01:48:50,103 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91701af8f/8cacf6adeae54b67a20aed56b9c305a5 [2021-02-22 01:48:50,106 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 01:48:50,121 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 01:48:50,122 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 01:48:50,123 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 01:48:50,127 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 01:48:50,128 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:48:50" (1/1) ... [2021-02-22 01:48:50,129 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@473de1c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:48:50, skipping insertion in model container [2021-02-22 01:48:50,130 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:48:50" (1/1) ... [2021-02-22 01:48:50,138 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 01:48:50,153 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 01:48:50,320 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/id2_i5_o5-2.c[548,561] [2021-02-22 01:48:50,324 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:48:50,340 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 01:48:50,364 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/id2_i5_o5-2.c[548,561] [2021-02-22 01:48:50,365 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:48:50,388 INFO L208 MainTranslator]: Completed translation [2021-02-22 01:48:50,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:48:50 WrapperNode [2021-02-22 01:48:50,389 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 01:48:50,390 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 01:48:50,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 01:48:50,391 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 01:48:50,409 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:48:50" (1/1) ... [2021-02-22 01:48:50,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:48:50" (1/1) ... [2021-02-22 01:48:50,419 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:48:50" (1/1) ... [2021-02-22 01:48:50,419 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:48:50" (1/1) ... [2021-02-22 01:48:50,433 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:48:50" (1/1) ... [2021-02-22 01:48:50,437 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:48:50" (1/1) ... [2021-02-22 01:48:50,445 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:48:50" (1/1) ... [2021-02-22 01:48:50,449 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 01:48:50,452 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 01:48:50,453 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 01:48:50,453 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 01:48:50,454 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:48:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:48:50,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 01:48:50,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 01:48:50,578 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 01:48:50,578 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2021-02-22 01:48:50,579 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2021-02-22 01:48:50,579 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 01:48:50,579 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 01:48:50,580 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 01:48:50,580 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 01:48:50,580 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 01:48:50,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 01:48:50,581 INFO L130 BoogieDeclarations]: Found specification of procedure id [2021-02-22 01:48:50,581 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2021-02-22 01:48:50,581 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 01:48:50,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 01:48:50,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 01:48:50,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 01:48:50,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 01:48:50,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 01:48:50,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 01:48:50,912 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 01:48:50,915 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-22 01:48:50,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:48:50 BoogieIcfgContainer [2021-02-22 01:48:50,917 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 01:48:50,937 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 01:48:50,937 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 01:48:50,941 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 01:48:50,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 01:48:50" (1/3) ... [2021-02-22 01:48:50,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28c223f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:48:50, skipping insertion in model container [2021-02-22 01:48:50,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:48:50" (2/3) ... [2021-02-22 01:48:50,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28c223f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:48:50, skipping insertion in model container [2021-02-22 01:48:50,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:48:50" (3/3) ... [2021-02-22 01:48:50,951 INFO L111 eAbstractionObserver]: Analyzing ICFG id2_i5_o5-2.c [2021-02-22 01:48:50,961 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 01:48:50,970 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 01:48:50,995 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 01:48:51,041 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 01:48:51,042 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 01:48:51,042 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 01:48:51,042 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 01:48:51,042 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 01:48:51,043 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 01:48:51,043 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 01:48:51,043 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 01:48:51,069 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2021-02-22 01:48:51,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-22 01:48:51,085 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:48:51,087 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] [2021-02-22 01:48:51,087 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:48:51,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:48:51,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1173118509, now seen corresponding path program 1 times [2021-02-22 01:48:51,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:48:51,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044925] [2021-02-22 01:48:51,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:48:51,212 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:48:51,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:51,421 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:51,423 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:51,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:51,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:51,444 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:51,445 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:51,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:48:51,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:51,534 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:51,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:51,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-22 01:48:51,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:51,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:51,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:51,573 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:51,574 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:51,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:48:51,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1044925] [2021-02-22 01:48:51,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:48:51,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-22 01:48:51,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876896374] [2021-02-22 01:48:51,610 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-22 01:48:51,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:48:51,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-22 01:48:51,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-22 01:48:51,630 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 6 states. [2021-02-22 01:48:52,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:48:52,280 INFO L93 Difference]: Finished difference Result 55 states and 59 transitions. [2021-02-22 01:48:52,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-22 01:48:52,283 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2021-02-22 01:48:52,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:48:52,309 INFO L225 Difference]: With dead ends: 55 [2021-02-22 01:48:52,310 INFO L226 Difference]: Without dead ends: 40 [2021-02-22 01:48:52,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-02-22 01:48:52,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-02-22 01:48:52,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-02-22 01:48:52,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2021-02-22 01:48:52,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2021-02-22 01:48:52,389 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 24 [2021-02-22 01:48:52,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:48:52,390 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2021-02-22 01:48:52,390 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-22 01:48:52,390 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2021-02-22 01:48:52,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-02-22 01:48:52,393 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:48:52,393 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:48:52,393 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 01:48:52,394 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:48:52,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:48:52,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1864116387, now seen corresponding path program 1 times [2021-02-22 01:48:52,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:48:52,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958889888] [2021-02-22 01:48:52,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:48:52,399 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:48:52,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:52,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:52,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:52,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:52,451 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:52,459 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:52,461 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:52,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:48:52,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:52,523 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:52,524 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:52,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-22 01:48:52,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:52,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:52,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:52,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:52,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:52,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 01:48:52,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:52,578 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:52,579 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:52,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:52,591 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:52,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:48:52,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958889888] [2021-02-22 01:48:52,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:48:52,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-22 01:48:52,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593147308] [2021-02-22 01:48:52,608 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-22 01:48:52,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:48:52,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-22 01:48:52,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-02-22 01:48:52,609 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand 8 states. [2021-02-22 01:48:52,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:48:52,986 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2021-02-22 01:48:52,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-22 01:48:52,987 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2021-02-22 01:48:52,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:48:52,989 INFO L225 Difference]: With dead ends: 53 [2021-02-22 01:48:52,989 INFO L226 Difference]: Without dead ends: 47 [2021-02-22 01:48:52,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-02-22 01:48:52,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-02-22 01:48:53,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2021-02-22 01:48:53,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-02-22 01:48:53,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2021-02-22 01:48:53,008 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 32 [2021-02-22 01:48:53,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:48:53,008 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2021-02-22 01:48:53,008 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-22 01:48:53,009 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2021-02-22 01:48:53,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-22 01:48:53,010 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:48:53,011 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] [2021-02-22 01:48:53,011 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 01:48:53,011 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:48:53,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:48:53,012 INFO L82 PathProgramCache]: Analyzing trace with hash -555146259, now seen corresponding path program 1 times [2021-02-22 01:48:53,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:48:53,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [257553189] [2021-02-22 01:48:53,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:48:53,015 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:48:53,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:53,056 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:53,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:53,058 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:53,059 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:53,064 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:53,065 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:53,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:48:53,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:53,104 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:53,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:53,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-22 01:48:53,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:53,152 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:53,153 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:53,160 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:53,160 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:53,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 01:48:53,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:53,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:53,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:53,227 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:53,227 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:53,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 01:48:53,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:53,252 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:53,253 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:53,254 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:53,254 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:53,272 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-22 01:48:53,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [257553189] [2021-02-22 01:48:53,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:48:53,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-22 01:48:53,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607421507] [2021-02-22 01:48:53,275 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-22 01:48:53,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:48:53,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-22 01:48:53,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-22 01:48:53,276 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand 9 states. [2021-02-22 01:48:53,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:48:53,959 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2021-02-22 01:48:53,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-22 01:48:53,960 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2021-02-22 01:48:53,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:48:53,966 INFO L225 Difference]: With dead ends: 63 [2021-02-22 01:48:53,967 INFO L226 Difference]: Without dead ends: 57 [2021-02-22 01:48:53,968 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-02-22 01:48:53,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-02-22 01:48:54,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50. [2021-02-22 01:48:54,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-02-22 01:48:54,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2021-02-22 01:48:54,014 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 40 [2021-02-22 01:48:54,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:48:54,016 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2021-02-22 01:48:54,016 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-22 01:48:54,016 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2021-02-22 01:48:54,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-02-22 01:48:54,021 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:48:54,022 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-22 01:48:54,022 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 01:48:54,022 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:48:54,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:48:54,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1338353437, now seen corresponding path program 1 times [2021-02-22 01:48:54,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:48:54,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [149326320] [2021-02-22 01:48:54,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:48:54,033 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:48:54,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:54,088 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:54,089 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:54,090 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:54,091 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:54,095 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:54,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:54,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:48:54,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:54,161 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:54,163 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:54,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-22 01:48:54,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:54,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:54,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:54,222 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:54,223 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:54,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 01:48:54,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:54,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:54,248 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:54,257 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:54,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:54,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 01:48:54,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:54,279 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:54,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:54,280 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:54,281 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:54,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 01:48:54,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:54,299 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:54,299 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:54,300 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:54,301 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:54,318 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-02-22 01:48:54,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [149326320] [2021-02-22 01:48:54,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:48:54,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-22 01:48:54,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277950326] [2021-02-22 01:48:54,320 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-22 01:48:54,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:48:54,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-22 01:48:54,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-22 01:48:54,321 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand 10 states. [2021-02-22 01:48:54,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:48:54,777 INFO L93 Difference]: Finished difference Result 73 states and 75 transitions. [2021-02-22 01:48:54,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-22 01:48:54,778 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 48 [2021-02-22 01:48:54,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:48:54,780 INFO L225 Difference]: With dead ends: 73 [2021-02-22 01:48:54,780 INFO L226 Difference]: Without dead ends: 67 [2021-02-22 01:48:54,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-02-22 01:48:54,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-02-22 01:48:54,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 55. [2021-02-22 01:48:54,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-02-22 01:48:54,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2021-02-22 01:48:54,799 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 48 [2021-02-22 01:48:54,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:48:54,799 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2021-02-22 01:48:54,799 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-22 01:48:54,799 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2021-02-22 01:48:54,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-02-22 01:48:54,801 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:48:54,801 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-02-22 01:48:54,801 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-22 01:48:54,801 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:48:54,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:48:54,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1307231661, now seen corresponding path program 2 times [2021-02-22 01:48:54,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:48:54,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791782892] [2021-02-22 01:48:54,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:48:54,805 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:48:54,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:54,838 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:54,839 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:54,840 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:54,840 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:54,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:54,845 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:54,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:48:54,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:54,875 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:54,875 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:54,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-22 01:48:54,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:54,895 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:54,896 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:54,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:54,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:54,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 01:48:54,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:54,926 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:54,927 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:54,935 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:54,936 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:54,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 01:48:54,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:54,958 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:54,959 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:54,960 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:54,960 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:54,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 01:48:54,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:54,981 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:54,982 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:54,982 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:54,983 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:54,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 01:48:54,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:55,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:55,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:55,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:55,003 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:55,024 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-02-22 01:48:55,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [791782892] [2021-02-22 01:48:55,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:48:55,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-22 01:48:55,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915166595] [2021-02-22 01:48:55,025 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-22 01:48:55,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:48:55,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-22 01:48:55,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-02-22 01:48:55,027 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 11 states. [2021-02-22 01:48:55,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:48:55,555 INFO L93 Difference]: Finished difference Result 83 states and 85 transitions. [2021-02-22 01:48:55,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-22 01:48:55,555 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 56 [2021-02-22 01:48:55,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:48:55,557 INFO L225 Difference]: With dead ends: 83 [2021-02-22 01:48:55,558 INFO L226 Difference]: Without dead ends: 77 [2021-02-22 01:48:55,559 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2021-02-22 01:48:55,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-02-22 01:48:55,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 60. [2021-02-22 01:48:55,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2021-02-22 01:48:55,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2021-02-22 01:48:55,579 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 56 [2021-02-22 01:48:55,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:48:55,579 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2021-02-22 01:48:55,580 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-22 01:48:55,580 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2021-02-22 01:48:55,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-02-22 01:48:55,581 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:48:55,582 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:48:55,582 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-22 01:48:55,582 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:48:55,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:48:55,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1431419613, now seen corresponding path program 2 times [2021-02-22 01:48:55,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:48:55,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244850649] [2021-02-22 01:48:55,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:48:55,586 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:48:55,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:55,657 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:55,659 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:55,672 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:55,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:48:55,684 WARN L141 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-02-22 01:48:55,685 WARN L147 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size 7 [2021-02-22 01:48:55,691 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:55,692 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:55,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:48:55,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:55,724 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:55,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:55,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-22 01:48:55,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:55,760 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:55,764 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:55,768 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:55,769 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:48:55,780 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:55,781 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:48:55,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 01:48:55,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:55,813 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:55,814 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:55,815 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:55,816 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:48:55,828 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:55,829 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:48:55,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 01:48:55,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:55,857 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:55,858 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:55,859 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:55,861 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:48:55,877 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:55,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:48:55,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 01:48:55,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:55,906 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:55,906 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:55,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:55,908 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:48:55,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:55,936 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:48:55,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 01:48:55,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:55,965 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:55,965 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:55,966 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:55,966 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:55,986 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:55,988 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:48:56,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 01:48:56,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:56,017 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:56,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:56,019 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:56,019 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:56,055 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-02-22 01:48:56,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244850649] [2021-02-22 01:48:56,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:48:56,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-02-22 01:48:56,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666297497] [2021-02-22 01:48:56,057 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-22 01:48:56,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:48:56,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-22 01:48:56,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-02-22 01:48:56,058 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand 16 states. [2021-02-22 01:48:57,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:48:57,420 INFO L93 Difference]: Finished difference Result 93 states and 95 transitions. [2021-02-22 01:48:57,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-02-22 01:48:57,420 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 64 [2021-02-22 01:48:57,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:48:57,422 INFO L225 Difference]: With dead ends: 93 [2021-02-22 01:48:57,422 INFO L226 Difference]: Without dead ends: 87 [2021-02-22 01:48:57,424 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=123, Invalid=1067, Unknown=0, NotChecked=0, Total=1190 [2021-02-22 01:48:57,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-02-22 01:48:57,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 65. [2021-02-22 01:48:57,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2021-02-22 01:48:57,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2021-02-22 01:48:57,447 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 64 [2021-02-22 01:48:57,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:48:57,448 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2021-02-22 01:48:57,448 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-22 01:48:57,448 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2021-02-22 01:48:57,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-02-22 01:48:57,449 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:48:57,450 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:48:57,450 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-22 01:48:57,450 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:48:57,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:48:57,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1542865773, now seen corresponding path program 3 times [2021-02-22 01:48:57,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:48:57,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862303261] [2021-02-22 01:48:57,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:48:57,454 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:48:57,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:57,483 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:57,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:57,485 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:57,486 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:57,489 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:57,490 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:57,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:48:57,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:57,521 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:57,522 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:57,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-22 01:48:57,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:57,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:57,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:57,549 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:57,550 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:57,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 01:48:57,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:57,576 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:57,577 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:57,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:57,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:57,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 01:48:57,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:57,611 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:57,612 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:57,613 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:57,613 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:57,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 01:48:57,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:57,637 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:57,637 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:57,638 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:57,639 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:57,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 01:48:57,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:57,661 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:57,662 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:57,663 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:57,664 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:57,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 01:48:57,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:57,686 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:57,690 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:57,691 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:57,691 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:57,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 01:48:57,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:57,709 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:57,710 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:57,713 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:57,714 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:57,760 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-02-22 01:48:57,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862303261] [2021-02-22 01:48:57,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:48:57,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-22 01:48:57,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616249983] [2021-02-22 01:48:57,762 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-22 01:48:57,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:48:57,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-22 01:48:57,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-02-22 01:48:57,763 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand 13 states. [2021-02-22 01:48:58,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:48:58,532 INFO L93 Difference]: Finished difference Result 103 states and 105 transitions. [2021-02-22 01:48:58,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-22 01:48:58,532 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 72 [2021-02-22 01:48:58,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:48:58,538 INFO L225 Difference]: With dead ends: 103 [2021-02-22 01:48:58,538 INFO L226 Difference]: Without dead ends: 64 [2021-02-22 01:48:58,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2021-02-22 01:48:58,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-02-22 01:48:58,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-02-22 01:48:58,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-02-22 01:48:58,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2021-02-22 01:48:58,564 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 72 [2021-02-22 01:48:58,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:48:58,565 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2021-02-22 01:48:58,565 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-22 01:48:58,565 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2021-02-22 01:48:58,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-02-22 01:48:58,566 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:48:58,567 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:48:58,567 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-22 01:48:58,567 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:48:58,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:48:58,568 INFO L82 PathProgramCache]: Analyzing trace with hash 2011491683, now seen corresponding path program 3 times [2021-02-22 01:48:58,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:48:58,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1434676492] [2021-02-22 01:48:58,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:48:58,570 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:48:58,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:58,599 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:58,599 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:58,600 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:58,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:58,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:58,604 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:58,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:48:58,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:58,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:58,632 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:48:58,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-22 01:48:58,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:58,669 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:58,670 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:58,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:58,676 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:58,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 01:48:58,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:58,702 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:58,702 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:58,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:58,718 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:58,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 01:48:58,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:58,744 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:58,745 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:58,745 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:58,746 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:58,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 01:48:58,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:58,768 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:58,769 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:58,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:58,771 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:58,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 01:48:58,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:58,795 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:58,798 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:58,799 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:58,803 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:58,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 01:48:58,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:58,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:58,834 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:58,835 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:58,836 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:58,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 01:48:58,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:58,859 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:58,860 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:58,860 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:58,861 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:58,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 01:48:58,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:48:58,880 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:58,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:58,881 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:48:58,881 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:48:58,916 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-02-22 01:48:58,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1434676492] [2021-02-22 01:48:58,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:48:58,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-22 01:48:58,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410482748] [2021-02-22 01:48:58,918 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-22 01:48:58,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:48:58,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-22 01:48:58,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-02-22 01:48:58,919 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand 14 states. [2021-02-22 01:48:59,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:48:59,556 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2021-02-22 01:48:59,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-22 01:48:59,557 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 80 [2021-02-22 01:48:59,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:48:59,557 INFO L225 Difference]: With dead ends: 64 [2021-02-22 01:48:59,558 INFO L226 Difference]: Without dead ends: 0 [2021-02-22 01:48:59,559 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=112, Invalid=488, Unknown=0, NotChecked=0, Total=600 [2021-02-22 01:48:59,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-22 01:48:59,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-22 01:48:59,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-22 01:48:59,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-22 01:48:59,560 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 80 [2021-02-22 01:48:59,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:48:59,560 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-22 01:48:59,560 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-22 01:48:59,561 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-22 01:48:59,561 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-22 01:48:59,561 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-22 01:48:59,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-22 01:48:59,999 WARN L202 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 65 [2021-02-22 01:49:00,293 WARN L202 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 87 [2021-02-22 01:49:00,427 WARN L202 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 64 [2021-02-22 01:49:00,607 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 87 [2021-02-22 01:49:00,737 WARN L202 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 64 [2021-02-22 01:49:01,153 WARN L202 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 31 [2021-02-22 01:49:01,470 WARN L202 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 33 [2021-02-22 01:49:01,713 WARN L202 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 33 [2021-02-22 01:49:02,064 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 40 [2021-02-22 01:49:02,441 WARN L202 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 36 [2021-02-22 01:49:02,656 WARN L202 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 31 [2021-02-22 01:49:03,040 WARN L202 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 36 [2021-02-22 01:49:03,205 WARN L202 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 25 [2021-02-22 01:49:03,368 WARN L202 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 25 [2021-02-22 01:49:03,532 WARN L202 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 32 [2021-02-22 01:49:03,689 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2021-02-22 01:49:03,689 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 4) no Hoare annotation was computed. [2021-02-22 01:49:03,689 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2021-02-22 01:49:03,689 INFO L192 CegarLoopUtils]: At program point L4-3(line 4) the Hoare annotation is: true [2021-02-22 01:49:03,690 INFO L192 CegarLoopUtils]: At program point L4-4(line 4) the Hoare annotation is: true [2021-02-22 01:49:03,690 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-22 01:49:03,690 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-22 01:49:03,690 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 4) the Hoare annotation is: true [2021-02-22 01:49:03,690 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-02-22 01:49:03,690 INFO L192 CegarLoopUtils]: At program point L4(line 4) the Hoare annotation is: true [2021-02-22 01:49:03,691 INFO L192 CegarLoopUtils]: At program point L4-1(line 4) the Hoare annotation is: true [2021-02-22 01:49:03,691 INFO L192 CegarLoopUtils]: At program point L4-2(line 4) the Hoare annotation is: true [2021-02-22 01:49:03,691 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-22 01:49:03,691 INFO L185 CegarLoopUtils]: At program point L16(line 16) the Hoare annotation is: (= id2_~x |id2_#in~x|) [2021-02-22 01:49:03,691 INFO L185 CegarLoopUtils]: At program point L15(line 15) the Hoare annotation is: (= id2_~x |id2_#in~x|) [2021-02-22 01:49:03,691 INFO L185 CegarLoopUtils]: At program point L16-1(line 16) the Hoare annotation is: (let ((.cse1 (<= |id2_#in~x| 3)) (.cse0 (= id2_~x |id2_#in~x|))) (or (and (or (and (<= |id2_#in~x| 1) .cse0) (and (<= |id2_#t~ret8| 1) .cse1 (<= 1 |id2_#t~ret8|) .cse0)) (<= 1 |id2_#in~x|)) (and (or .cse1 (and (<= 3 |id2_#t~ret8|) (<= |id2_#t~ret8| 3))) (<= 3 |id2_#in~x|) .cse0) (and (<= 5 |id2_#in~x|) .cse0))) [2021-02-22 01:49:03,692 INFO L185 CegarLoopUtils]: At program point L15-1(line 15) the Hoare annotation is: (and (= |id2_#in~x| 0) (= id2_~x |id2_#in~x|)) [2021-02-22 01:49:03,692 INFO L185 CegarLoopUtils]: At program point L16-2(line 16) the Hoare annotation is: (let ((.cse1 (<= |id2_#in~x| 3)) (.cse0 (= id2_~x |id2_#in~x|))) (or (and (or (and (<= |id2_#in~x| 1) .cse0) (and (<= |id2_#t~ret8| 1) .cse1 (<= 1 |id2_#t~ret8|) .cse0)) (<= 1 |id2_#in~x|)) (and (or .cse1 (and (<= 3 |id2_#t~ret8|) (<= |id2_#t~ret8| 3))) (<= 3 |id2_#in~x|) .cse0) (and (<= 5 |id2_#in~x|) .cse0))) [2021-02-22 01:49:03,692 INFO L185 CegarLoopUtils]: At program point L16-3(line 16) the Hoare annotation is: (let ((.cse1 (<= |id2_#in~x| 3)) (.cse0 (= id2_~x |id2_#in~x|))) (or (and (<= 5 |id2_#in~x|) .cse0) (and (<= 3 |id2_#in~x|) (or .cse1 (and (<= 3 |id2_#t~ret8|) (<= |id2_#t~ret8| 3) (<= |id2_#res| 4) (<= 4 |id2_#res|))) .cse0) (and (or (and (<= |id2_#in~x| 1) .cse0) (and (<= 2 |id2_#res|) (<= |id2_#t~ret8| 1) .cse1 (<= 1 |id2_#t~ret8|) (<= |id2_#res| 2) .cse0)) (<= 1 |id2_#in~x|)))) [2021-02-22 01:49:03,693 INFO L185 CegarLoopUtils]: At program point id2EXIT(lines 14 17) the Hoare annotation is: (let ((.cse1 (<= |id2_#in~x| 3)) (.cse0 (= id2_~x |id2_#in~x|))) (or (and (<= 3 |id2_#in~x|) (or (and (<= |id2_#res| 4) .cse0 (<= 4 |id2_#res|)) (and .cse1 .cse0))) (and (= |id2_#in~x| 0) (= |id2_#res| 0) .cse0) (and (or (and (<= 2 |id2_#res|) .cse1 (<= |id2_#res| 2)) (<= |id2_#in~x| 1)) (<= 1 |id2_#in~x|) .cse0) (and (<= 5 |id2_#in~x|) .cse0))) [2021-02-22 01:49:03,693 INFO L192 CegarLoopUtils]: At program point id2ENTRY(lines 14 17) the Hoare annotation is: true [2021-02-22 01:49:03,693 INFO L185 CegarLoopUtils]: At program point id2FINAL(lines 14 17) the Hoare annotation is: (let ((.cse1 (<= |id2_#in~x| 3)) (.cse0 (= id2_~x |id2_#in~x|))) (or (and (<= 3 |id2_#in~x|) (or (and (<= |id2_#res| 4) .cse0 (<= 4 |id2_#res|)) (and .cse1 .cse0))) (and (= |id2_#in~x| 0) (= |id2_#res| 0) .cse0) (and (or (and (<= 2 |id2_#res|) .cse1 (<= |id2_#res| 2)) (<= |id2_#in~x| 1)) (<= 1 |id2_#in~x|) .cse0) (and (<= 5 |id2_#in~x|) .cse0))) [2021-02-22 01:49:03,693 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-22 01:49:03,693 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-22 01:49:03,693 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-22 01:49:03,693 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-22 01:49:03,694 INFO L185 CegarLoopUtils]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 23) the Hoare annotation is: false [2021-02-22 01:49:03,694 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 19 25) the Hoare annotation is: true [2021-02-22 01:49:03,694 INFO L185 CegarLoopUtils]: At program point mainEXIT(lines 19 25) the Hoare annotation is: (<= 5 main_~input~0) [2021-02-22 01:49:03,694 INFO L185 CegarLoopUtils]: At program point L23(line 23) the Hoare annotation is: false [2021-02-22 01:49:03,694 INFO L185 CegarLoopUtils]: At program point L22(lines 22 24) the Hoare annotation is: (and (< 4 main_~result~0) (<= 5 main_~input~0) (<= main_~result~0 5)) [2021-02-22 01:49:03,694 INFO L185 CegarLoopUtils]: At program point L23-1(line 23) the Hoare annotation is: false [2021-02-22 01:49:03,695 INFO L185 CegarLoopUtils]: At program point L21(line 21) the Hoare annotation is: (and (<= main_~input~0 5) (<= 5 main_~input~0)) [2021-02-22 01:49:03,695 INFO L185 CegarLoopUtils]: At program point L21-1(line 21) the Hoare annotation is: (and (<= 5 |main_#t~ret9|) (<= |main_#t~ret9| 5) (<= 5 main_~input~0)) [2021-02-22 01:49:03,695 INFO L185 CegarLoopUtils]: At program point L22-2(lines 19 25) the Hoare annotation is: (<= 5 main_~input~0) [2021-02-22 01:49:03,695 INFO L185 CegarLoopUtils]: At program point L21-2(line 21) the Hoare annotation is: (and (<= 5 |main_#t~ret9|) (<= |main_#t~ret9| 5) (<= 5 main_~input~0)) [2021-02-22 01:49:03,695 INFO L185 CegarLoopUtils]: At program point L21-3(line 21) the Hoare annotation is: (and (<= 5 |main_#t~ret9|) (<= |main_#t~ret9| 5) (< 4 main_~result~0) (<= 5 main_~input~0) (<= main_~result~0 5)) [2021-02-22 01:49:03,695 INFO L185 CegarLoopUtils]: At program point idFINAL(lines 9 12) the Hoare annotation is: (let ((.cse1 (<= |id_#in~x| 2)) (.cse2 (= |id_#in~x| id_~x)) (.cse0 (<= |id_#in~x| 4))) (or (and (or (and (<= |id_#res| 3) .cse0 (<= 3 |id_#res|)) .cse1) .cse2 (<= 2 |id_#in~x|)) (and .cse2 (<= 6 |id_#in~x|)) (and (<= 1 |id_#in~x|) .cse2 (<= |id_#res| 1) (<= 1 |id_#res|) .cse1) (and .cse2 (= |id_#in~x| 0)) (and (<= 4 |id_#in~x|) (or (and (<= 5 |id_#res|) .cse2 (<= |id_#res| 5)) (and .cse2 .cse0))))) [2021-02-22 01:49:03,696 INFO L185 CegarLoopUtils]: At program point L11(line 11) the Hoare annotation is: (= |id_#in~x| id_~x) [2021-02-22 01:49:03,696 INFO L185 CegarLoopUtils]: At program point idEXIT(lines 9 12) the Hoare annotation is: (let ((.cse1 (<= |id_#in~x| 2)) (.cse2 (= |id_#in~x| id_~x)) (.cse0 (<= |id_#in~x| 4))) (or (and (or (and (<= |id_#res| 3) .cse0 (<= 3 |id_#res|)) .cse1) .cse2 (<= 2 |id_#in~x|)) (and .cse2 (<= 6 |id_#in~x|)) (and (<= 1 |id_#in~x|) .cse2 (<= |id_#res| 1) (<= 1 |id_#res|) .cse1) (and .cse2 (= |id_#in~x| 0)) (and (<= 4 |id_#in~x|) (or (and (<= 5 |id_#res|) .cse2 (<= |id_#res| 5)) (and .cse2 .cse0))))) [2021-02-22 01:49:03,696 INFO L185 CegarLoopUtils]: At program point L10(line 10) the Hoare annotation is: (= |id_#in~x| id_~x) [2021-02-22 01:49:03,696 INFO L185 CegarLoopUtils]: At program point L11-1(line 11) the Hoare annotation is: (let ((.cse0 (= |id_#in~x| id_~x)) (.cse1 (<= |id_#in~x| 4))) (or (and .cse0 (<= 6 |id_#in~x|)) (and (<= 1 |id_#in~x|) .cse0 (= |id_#t~ret7| 0) (<= |id_#in~x| 1)) (and (or (and .cse0 (<= |id_#in~x| 2)) (and .cse0 .cse1 (<= |id_#t~ret7| 2) (<= 2 |id_#t~ret7|))) (<= 2 |id_#in~x|)) (and (or (and .cse0 (<= 4 |id_#t~ret7|) (<= |id_#t~ret7| 4)) (and .cse0 .cse1)) (<= 4 |id_#in~x|)))) [2021-02-22 01:49:03,696 INFO L185 CegarLoopUtils]: At program point L10-1(line 10) the Hoare annotation is: (and (= |id_#in~x| id_~x) (= |id_#in~x| 0)) [2021-02-22 01:49:03,697 INFO L185 CegarLoopUtils]: At program point L11-2(line 11) the Hoare annotation is: (let ((.cse0 (= |id_#in~x| id_~x)) (.cse1 (<= |id_#in~x| 4))) (or (and .cse0 (<= 6 |id_#in~x|)) (and (<= 1 |id_#in~x|) .cse0 (= |id_#t~ret7| 0) (<= |id_#in~x| 1)) (and (or (and .cse0 (<= |id_#in~x| 2)) (and .cse0 .cse1 (<= |id_#t~ret7| 2) (<= 2 |id_#t~ret7|))) (<= 2 |id_#in~x|)) (and (or (and .cse0 (<= 4 |id_#t~ret7|) (<= |id_#t~ret7| 4)) (and .cse0 .cse1)) (<= 4 |id_#in~x|)))) [2021-02-22 01:49:03,697 INFO L185 CegarLoopUtils]: At program point L11-3(line 11) the Hoare annotation is: (and (or (and (or (and (<= |id_#res| 3) (<= |id_#t~ret7| 2) (<= 2 |id_#t~ret7|) (<= 3 |id_#res|)) (<= |id_#in~x| 2)) (<= 2 |id_#in~x|)) (and (<= 1 |id_#in~x|) (<= |id_#res| 1) (= |id_#t~ret7| 0) (<= 1 |id_#res|) (<= |id_#in~x| 1)) (<= 4 |id_#in~x|)) (let ((.cse0 (= |id_#in~x| id_~x))) (or (and (<= 5 |id_#res|) .cse0 (<= |id_#res| 5) (<= 4 |id_#t~ret7|) (<= |id_#t~ret7| 4)) (and .cse0 (<= 6 |id_#in~x|)) (and .cse0 (<= |id_#in~x| 4))))) [2021-02-22 01:49:03,697 INFO L192 CegarLoopUtils]: At program point idENTRY(lines 9 12) the Hoare annotation is: true [2021-02-22 01:49:03,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 01:49:03 BoogieIcfgContainer [2021-02-22 01:49:03,720 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 01:49:03,721 INFO L168 Benchmark]: Toolchain (without parser) took 13612.69 ms. Allocated memory was 163.6 MB in the beginning and 286.3 MB in the end (delta: 122.7 MB). Free memory was 136.3 MB in the beginning and 137.1 MB in the end (delta: -826.7 kB). Peak memory consumption was 159.4 MB. Max. memory is 8.0 GB. [2021-02-22 01:49:03,722 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 125.8 MB. Free memory was 82.8 MB in the beginning and 82.6 MB in the end (delta: 188.9 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 01:49:03,722 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.03 ms. Allocated memory is still 163.6 MB. Free memory was 135.2 MB in the beginning and 125.8 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-22 01:49:03,723 INFO L168 Benchmark]: Boogie Preprocessor took 59.95 ms. Allocated memory is still 163.6 MB. Free memory was 125.8 MB in the beginning and 124.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-22 01:49:03,723 INFO L168 Benchmark]: RCFGBuilder took 465.28 ms. Allocated memory is still 163.6 MB. Free memory was 124.3 MB in the beginning and 110.0 MB in the end (delta: 14.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-02-22 01:49:03,724 INFO L168 Benchmark]: TraceAbstraction took 12783.25 ms. Allocated memory was 163.6 MB in the beginning and 286.3 MB in the end (delta: 122.7 MB). Free memory was 145.6 MB in the beginning and 137.1 MB in the end (delta: 8.5 MB). Peak memory consumption was 167.4 MB. Max. memory is 8.0 GB. [2021-02-22 01:49:03,725 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 125.8 MB. Free memory was 82.8 MB in the beginning and 82.6 MB in the end (delta: 188.9 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 267.03 ms. Allocated memory is still 163.6 MB. Free memory was 135.2 MB in the beginning and 125.8 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 59.95 ms. Allocated memory is still 163.6 MB. Free memory was 125.8 MB in the beginning and 124.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 465.28 ms. Allocated memory is still 163.6 MB. Free memory was 124.3 MB in the beginning and 110.0 MB in the end (delta: 14.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 12783.25 ms. Allocated memory was 163.6 MB in the beginning and 286.3 MB in the end (delta: 122.7 MB). Free memory was 145.6 MB in the beginning and 137.1 MB in the end (delta: 8.5 MB). Peak memory consumption was 167.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 23]: 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: 14]: Procedure Contract for id2 Derived contract for procedure id2: (((3 <= \old(x) && (((\result <= 4 && x == \old(x)) && 4 <= \result) || (\old(x) <= 3 && x == \old(x)))) || ((\old(x) == 0 && \result == 0) && x == \old(x))) || (((((2 <= \result && \old(x) <= 3) && \result <= 2) || \old(x) <= 1) && 1 <= \old(x)) && x == \old(x))) || (5 <= \old(x) && x == \old(x)) - ProcedureContractResult [Line: 19]: Procedure Contract for main Derived contract for procedure main: 5 <= input - ProcedureContractResult [Line: 9]: Procedure Contract for id Derived contract for procedure id: ((((((((\result <= 3 && \old(x) <= 4) && 3 <= \result) || \old(x) <= 2) && \old(x) == x) && 2 <= \old(x)) || (\old(x) == x && 6 <= \old(x))) || ((((1 <= \old(x) && \old(x) == x) && \result <= 1) && 1 <= \result) && \old(x) <= 2)) || (\old(x) == x && \old(x) == 0)) || (4 <= \old(x) && (((5 <= \result && \old(x) == x) && \result <= 5) || (\old(x) == x && \old(x) <= 4))) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.5s, OverallIterations: 8, TraceHistogramMax: 4, AutomataDifference: 5.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 318 SDtfs, 400 SDslu, 801 SDs, 0 SdLazy, 1957 SolverSat, 115 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 223 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 60 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 43 LocationsWithAnnotation, 52 PreInvPairs, 252 NumberOfFragments, 779 HoareAnnotationTreeSize, 52 FomulaSimplifications, 59532 FormulaSimplificationTreeSizeReduction, 1.3s HoareSimplificationTime, 43 FomulaSimplificationsInter, 7171 FormulaSimplificationTreeSizeReductionInter, 2.7s 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...